Digital Equipment Digital NetRider Owner's Manual

Network access server management

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DIGITAL NetRider

Network Access Server

Management

Part Number: AA-PW5VE-TE

June 1997

Revision/Update Information:

Software and Version:

This is a revised document.

DECserver Network Access

Software, Version 2.2

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Page 1 DIGITAL NetRider Network Access Server Management Part Number: AA-PW5VE-TE June 1997 Revision/Update Information: Software and Version: This is a revised document. DECserver Network Access Software, Version 2.2...
Page 2 The following are third-party trademarks: AppleTalk and Macintosh are registered trademarks of Apple Computer, Inc. HP and Hewlett-Packard are registered trademarks of Hewlett Packard Company. IBM is a registered trademark of International Business Machines Corporation. Kerberos is a trademark of the Massachusetts Institute of Technology.
Page 3: Table Of Contents
Preface 1 DNAS Management Overview ..............1-1 Introduction.
Page 4 Help ............... . 2-5 Introduction .
Page 5 Exiting from a Menu............3-11 Using Menus to Set Up a Captive Port .
Page 6 Preparing Telnet Listeners for Initialization ......... 5-3 Do This.
Page 7 Identification String in a Login Procedure Display ....... . 6-7 KEEPALIVE TIMER Characteristic .
Page 8 7 TCP/IP Network Characteristics Overview ..............7-1 Introduction .
Page 9 Introduction............. . 7-25 BOOTP Server Configuration .
Page 10 Displaying AppleTalk Routes ........... 8-12 Command .
Page 11 Specifying LONGBREAK LOGOUT ......... 9-13 Specifying INACTIVITY LOGOUT .
Page 12 Establishing a Connection ..........10-18 Response to Momentary Loss of CTS .
Page 13 Profiles Types ............11-18 Profile Characteristics.
Page 14 Displaying Session Status ..........11-48 Terminating Sessions .
Page 15 Introduction............. . 13-2 Configuring a Printer for Access Through a Telnet Listener .
Page 16 Control and Data Files ........... . . 14-2 Operation .
Page 17 Enabling CSLIP ............15-13 Disabling CSLIP .
Page 18 Introduction ............. 17-2 Distributing Devices on Access Servers .
Page 19 Displaying and Customizing Keyboard Maps ........18-9 Introduction.
Page 20 Displaying LCP Status ........... . 19-12 Displaying IPCP Status .
Page 21 Novell Operation............20-17 Operational Checkout and Diagnosis.
Page 22 Defining Dialer Script Strings..........21-4 Assigning the Dialer Script to a Port.
Page 23 User Authentication Procedure ..........22-10 Changing a User Name and Password .
Page 24 23 Accounting Overview ..............23-1 Introduction .
Page 25 A Cable and Adapter Recommendations Cable and Adapter Hardware ........... . .A-1 Cable and Adapter Table .
Page 27: Using This Manual
Overview Purpose Network Access Server Management is written for the person who sets up, maintains, and manages any one of the Digital Equipment Corporation family of network access servers. To use this manual, you must be familiar with using a terminal on a Digital Equipment Corporation access server.
Page 28 Conventions This manual uses the following conventions: The Return key, which you must press to execute all commands, is not shown in command line displays. The Local> prompt, which appears in most examples, is the default access server prompt. You can change this prompt to something other than Local> with the SET/DEFINE/CHANGE SERVER PROMPT command.
Page 29: Associated Documents
Associated Documents Refer to the following documentation for additional information: LAT Network Concepts — Provides an overview of the LAT protocol. Terminal Server Manager Installation and Use — Provides the procedures to install and use TSM. DECserver 700 Site Preparation and Maintenance — Provides the procedures to prepare the site before installing the DECserver 700 hardware.
Page 30 How to Order Additional Documentation To order additional documentation, use the following information: To Order: By Telephone Electronically (USA only) By Mail (USA and Puerto Rico) By Mail (Canada) Internationally Internally Contact: USA (except Alaska, New Hampshire, and Hawaii): 1-800-DIGITAL (1-800-344-4825) Alaska, New Hampshire, and Hawaii: 1-603-884-6660 Canada: 1-800-267-6215 Dial 1-800-DEC-DEMO...
Page 31: Documentation Comments
Correspondence Documentation Comments If you have comments or suggestions about this document, send them to the DIGITAL documentation organization. Attn.: Documentation Project Manager FAX: (508) 486-5655 E-mail: doc_quality@lkg.mts.dec.com Online Services To locate product-specific information, refer to the following online services: To read the Bulletin Board System, set your modem to 8 bits, no parity, 1 stop bit, and dial 508-486-5777 (U.S.).
Page 33: Introduction
Overview Introduction This chapter describes the tasks that the following types of users perform when managing the access server: System administrators who configure and manage the access server End users of network services and applications In This Chapter This chapter includes the following topics: Configuration Tasks for System Administrators Management Tasks for System Administrators User Tasks...
Page 34: Configuration Tasks For System Administrators
Configuration Tasks for System Administrators Configuration Tasks for System Administrators Configuration Tasks The following table lists the tasks that system administrators can perform when configuring an access server and the chapter of this manual that describes each task: To Configure: User interface Network access server on the network Devices on a port...
Page 35: Management Tasks For System Administrators
Management Tasks for System Administrators System Management Tasks The following table lists the tasks that system administrators can perform to manage the access server. This table also lists the chapter that describes each task. To Manage: LAT network communications TCP/IP network communications SLIP port reconfiguration SNMP communities Network access server maintenance...
Page 36: User Tasks
User Tasks User Tasks Introduction The access server enables end users to perform tasks such as connecting to network resources and managing sessions. For a description of these tasks, refer to the Specifying the Telnet Client Session Profile section in Chapter 11. Accessing Online Help The tutorial for online help also describes user tasks.
Page 37: Storage Of Configuration Settings And Changes In Memory
Storage of Configuration Settings and Changes in Memory Memory Types The access server stores configuration settings in two types of memory: Permanent data is stored in nonvolatile random access memory (NVRAM). Operational data is stored in volatile random access memory (VRAM). Power Loss An initialization or power loss has no effect on NVRAM.
Page 38: Commands To Display And Change Configuration Settings
Commands to Display and Change Configuration Settings Commands to Display and Change Configuration Settings Introduction This section lists the type of commands that operate on the configuration settings stored in VRAM and NVRAM. The CHANGE and SET commands listed in the following chapters have an immediate effect when you enter them.
Page 39: Management Tools
Overview Introduction This chapter describes the tools for managing the access server. These tools are: Access server commands Help Console port Remote console port Access Server Manager, a PC-based management tool In This Chapter This chapter contains the following topics: Access Server Commands Help Console Port...
Page 40: Access Server Commands
Access Server Commands Access Server Commands Introduction The access server has a command line interface. You enter commands at a prompt on a terminal attached to an access server port. The default for the prompt is: Local> Reference For a complete description of command syntax and use, refer to the Network Access Server Command Reference.
Page 41: User Groups
User Groups For practical purposes, the access server command set syntax is divided into command groups. These groups are: Command descriptions CLEAR/PURGE commands SET/DEFINE/CHANGE commands SHOW/LIST/MONITOR commands In the above list, the command descriptions group includes any command that does not functionally fit into the CLEAR/PURGE, SET/DEFINE/CHANGE or SHOW/LIST MONITOR groups (for example, DIAL, CONNECT, SEND, and LOOP).
Page 42: Privileged Commands
Access Server Commands Reference For more information about this command group and its qualifiers, please refer to the Network Access Server Command Reference. Privileged Commands To manage and configure the network, you use privileged commands. To enable privileged commands, use the SET PRIVILEGED command. The command line interface prompts you to enter the privileged password (which does not appear on the screen).
Page 43: Help
Help Introduction The access server provides online help about access server commands. This section describes two types of online help that are available on the access server. HELP TUTORIAL Command The command HELP TUTORIAL provides a brief introduction to the access server. You enter this command as follows: Local>...
Page 44: Console Port
Console Port Console Port Displaying Port Parameters The console port receives the access server system messages. An access server can have only one console port at a time. The default console port number is 1. To change the console port, use the SET/DEFINE/CHANGE CONSOLE PORT command. To find out the current port number for the console port, use the SHOW SERVER command.
Page 45: Remote Console Port
Remote Console Port Description The remote console port is a logical port that enables you to configure the access server from a remote terminal on the network. Features of the Remote Console Port The following table lists the features that distinguish the remote console port from other ports: Feature Local switch character...
Page 46: Network Control Program (Ncp)
Remote Console Port OpenVMS Utility — Terminal Server Manager For OpenVMS systems, DIGITAL offers the Terminal Server manager (TSM) to facilitate managing the access server using the MOP remote console. TSM allows the user to store access information such as the maintenance password, Ethernet address, and login password for a server in a local database.
Page 47: Use Of Set Host/Mop From A Decnet/Osi Openvms Node
Remote Console Port Example: Using NCP to Connect to an Access Server Remote Console Port from a Load Host The following example shows a connection from an OpenVMS DECnet Phase IV load host to an access server that has the DECnet node name SHRIMP. The maintenance password is FEDCBA.
Page 48: Use Of Ccr From An Ultrix Decnet Node
Remote Console Port Example: Using MOP to Connect to an Access Server from a DECnet/OSI OpenVMS Node The following example shows a connection from a DECnet/OSI OpenVMS node to an access server remote console port. In this example: The access server has a DECnet node name of DGD700. The maintenance password is FEDCBA.
Page 49: Telnet Remote Console
Example: Using CCR to Connect to an Access Server from an ULTRIX DECnet Node The following example shows a connection from an ULTRIX DECnet node to an access server remote console port. In this example: The access server has the DECnet node name DRUMCORPS. The maintenance password is FEDCBA.
Page 50: Characteristics Of The Telnet Remote Console Port
Remote Console Port Characteristics of the Telnet Remote Console Port The following table describes the characteristics for Telnet remote console connections on the access server: Characteristic Number of connections allowed on the remote console port at one time Default TCP port number Number of TCP ports configured to function as a remote console port Maintenance password...
Page 51: Access Server Manager
Access Server Manager Description The Access Server Manager application is a management tool for DECserver access servers. It runs on 32-bit Windows-based operating systems. The Access Server Manager has a graphical user interface that allows you to easily configure some DECserver features.
Page 53: User Interface
Overview Introduction This chapter describes how to customize and manage the user interface to the access server. The access server provides two features to manage the user interface: A command group defines a set of commands that a specified group of users can access and execute.
Page 54: Command Groups And Menus
Command Groups and Menus Command Groups and Menus Description In addition to convenience, command groups and menus provide the access server with a security feature. Since command groups and menus both have an associated port list, you can control which users can access them. Command groups and menus can also enable nonprivileged users to access a subset of privileged commands.
Page 55: Using Command Groups
Using Command Groups Creating a Command Group To create a command group, follow these steps: Step Action Use the CHANGE COMMAND GROUP command to specify a command group name and port list. Example: The following defines the command group called SERVICE_A that is available on ports 2, 3, and 5: Local>...
Page 56: Executing A Command Group
Using Command Groups Executing a Command Group To execute a command group, use the DO command. Example: Executing a Command Group The following example executes the command group SERVICE_A defined in the previous example. When this command executes, it substitutes the value 3 for the port place holder %P1 and SALES for the service place holder %P2.
Page 57: Using Menus
Using Menus Displaying a List of Enabled Menus To display a list of the menus enabled on a port, use the SHOW MENU command. If you are a privileged user, the SHOW MENU command displays the names of all menus available on the access server. To enable a menu on a port, you must use the CHANGE MENU command.
Page 58: Assigning A Default Menu To A Port
Using Menus Assigning a Default Menu to a Port To assign a default menu to a port, use the DEFINE PORT n DEFAULT MENU command. If a port has a default menu, it displays whenever you: Log in to the port. Press the Local Break key or enter the Local Switch character while in a host session.
Page 59 Using Menus Figure: Windows on Access Server Menus The following figure shows a typical access server menu: User Interface 3-7...
Page 60: Defining Menus
Defining Menus Defining Menus Introduction This section describes how to define menus and provides examples. Reference For complete information about the commands mentioned in this section, refer to the Network Access Server Command Reference. Main Menu Whenever the server has its factory-set default settings, it stores the main menu in NVRAM.
Page 61: Main Menu Display
Main Menu Display The following figure shows how the Main Menu displays on the screen: Defining Menu Choices For each menu choice line, you can define: One line of display text A server command, which can: — Specify up to 8 optional input parameters —...
Page 62: Displaying A Selected Menu
Defining Menus Example: Sample Definition of a Menu Selection The following example shows one way to define the selection Open Telnet Session that appears on line 5 of the main menu: Local> CHANGE MENU MAIN LINE 5 DISPLAY "OPEN TELNET SESSION" Local>...
Page 63: Exiting From A Menu
If the port is type ANSI, menu items can be selected by either using the up- and down- arrow keys or by entering the item number. To use the arrow keys, press the up- or down-arrow key until the desired item is highlighted and press Return. If the port is type SOFTCOPY or HARDCOPY, you can still enter a menu but the arrow keys are disabled.
Page 64: Purging Menu Lines And Entire Menus
Defining Menus Line 7 Execute: CONNECT TELNET 195.20.0.15 Line 7 Display: TCP/IP Host Line 9 Display Logout Line 9 Logout LOGOUT Purging Menu Lines and Entire Menus Use the PURGE MENU command to delete a string from a menu line, an entire menu line, an entire menu, or all menus from the access server database.
Page 65: Managing Load Hosts
Overview Introduction This chapter describes the command procedures that you use to manage hosts that load the access server software image on a LAT network. In This Chapter This chapter contains the following topics: DSV$CONFIGURE DSVCONFIG Using a BOOTP/TFTP Server Upline Dumping Terminal Server Manager (TSM) Chapter 4...
Page 66: Load Host Procedures
Load Host Procedures Load Host Procedures Description The specific command procedure that you use to manage the load host depends on the network version, protocol, and operating system of the load host. The following table lists the available combinations, with a reference to the related section in this chapter: Load Host Network Command...
Page 67: Dsv$Configure
DSV$CONFIGURE Introduction DSV$CONFIGURE is a command procedure that runs on a DECnet Phase IV OpenVMS load host or on a DECnet/OSI OpenVMS load host. This procedure enables you to: Maintain configuration information about access servers. Modify the local MOP (Maintenance Operation Protocol) client configuration. Access the remote console port of the access server.
Page 68: Add Command
DSV$CONFIGURE Example: Starting DSV$CONFIGURE and Displaying Help The following example shows how to use the symbol DSV to start DSV$CONFIGURE. This example also shows how to use HELP to display a list of DSV$CONFIGURE commands. The remainder of this section explains each command shown.
Page 69: Modify And Set Commands
Example: DSV$CONFIGURE ADD Command This example shows the ADD command on a DECnet/OSI system. In this example, at the end of each line you must press return to continue. DSV> ADD SERVER _Server Name: DGD700 _Ethernet Address: 08-00-2B-26-AE-32 _Server Type: DS700 _Service Circuit [SVA-0]: _Maintenance Password [none]: FEDCBA _Dump File [MOP$DUMP:DS7DGD700.DMP]:...
Page 70: List And Show Commands
DSV$CONFIGURE Example: DELETE Command for DSV$CONFIGURE The following example shows the DELETE command. This example omits the optional SERVER keyword. In this example, NCL displays the message NODE 0 MOP Client DGD700 on a DECnet/OSI system. NCP displays a similar message on a DECnet Phase IV system.
Page 71 Example: CONNECT Command for DSV$CONFIGURE on a DECnet/OSI System The following example shows how to use CCR and DSV$CONFIGURE to connect to a remote console port from a DECnet/OSI system: DSV> USE DGD700 %CCR-I-CONNEST, connection established to remote system 08-00- 2B-26-AE-32 Press CTRL/ \ to disconnect, CTRL/] to send break # ACCESS (not echoed) Network Access SW Vx.x for DSxxx-xx BLxx-xx ROM Vx.x-x Uptime: 0...
Page 72 DSV$CONFIGURE Context-Sensitive Help for DSV$CONFIGURE DSV$CONFIGURE provides context-sensitive help. At any prompt other than the Local> prompt after a CONNECT/USE command, type a question mark (?) for an explanation. 4-8 Managing Load Hosts...
Page 73: Dsvconfig
DSVCONFIG Introduction DSVCONFIG is a menu-driven command procedure that runs on DECnet Phase IV and DECnet/OSI ULTRIX load hosts. This procedure enables you to: Store configuration data about the access server in the DECnet node databases. Downline load the software image from the load host to the access server. Upline dump memory contents from the access server to the load host.
Page 74: Using A Bootp/Tftp Server
Using a BOOTP/TFTP Server Using a BOOTP/TFTP Server Introduction A BOOTP/TFTP server is a UNIX host that downloads the access server software using the BOOTP and TFTP protocols. The BOOTP/TFTP server stores the information necessary to downline load the access server software in the /etc/bootptab file.
Page 75: Remote Connection Password
Using a BOOTP/TFTP Server Remote Connection Password DNAS has a password feature for remote logins, similar to the main login password. DNAS uses a single value for the remote password server-wide that is separate from the main login password. The factory default value is the same, however, for both the remote login password and the main login password.
Page 76: Upline Dumping
Upline Dumping Upline Dumping Introduction The access server upline dumps its memory when: An unexpected failure occurs. You force a crash. The access server always dumps to a load host with the protocol that was used for its download. After an upline dump, the access server automatically reinitializes. Reference To send a dump file to Digital Equipment Corporation for evaluation, follow the procedure described in the Network Access Server Problem Solving manual.
Page 77: Terminal Server Manager (Tsm)
Terminal Server Manager (TSM) Introduction TSM is a utility that runs on OpenVMS load hosts. TSM enables you to configure and manage the access servers on the same extended LAN. TSM is not included in the access server software and must be purchased separately. Reference For more information about TSM, refer to the Terminal Server Manager Installation and Use manual.
Page 79: Initializing The Access Server
Initializing the Access Server Overview Introduction This chapter describes how to initialize the access server. Initializing the access server reloads the software image. Initializing the access server does not affect the configuration settings stored in NVRAM. To reset the access server to the factory-set defaults, you need to reboot the access server and press the appropriate switch on the hardware unit.
Page 80: Preparing Lat Services For Initialization
Preparing LAT Services for Initialization Preparing LAT Services for Initialization Do This If the access server offers LAT services, follow these steps before you initialize: Step Action Enter the following command to disable queuing on the access server: Local> SET SERVER QUEUE LIMIT 0 Disable additional connections to local services.
Page 81: Preparing Telnet Listeners For Initialization
Preparing Telnet Listeners for Initialization Do This If the access server has Telnet listeners, follow these steps before you initialize: Step Action Disable further Telnet connections. The network access server fails to execute the SET TELNET LISTENER CONNECTIONS DISABLED command if a session exists on the specified listener. Example: The following command disables Telnet connections on TCP port 2005: Local>...
Page 82: Initializing The Access Server
Initializing the Access Server Initializing the Access Server Using the INITIALIZE Command To use the INITIALIZE command, log in to one of the following: A terminal attached to the access server The remote console port Login Methods You can use any of the following methods to log into the remote console port: SET HOST/MOP Telnet remote console Refer to Remote Console Port section in Chapter 2 for additional information about the...
Page 83: Specifying Initialization From A Load Host
Specifying Initialization from a Load Host To specify initialization from a network load host, use the following command: Local> INITIALIZE FROM ETHERNET This command causes the access server to request the image name stored in its NVRAM from a load host. Specifying an Image Name When Initializing You can specify the name of an image when initializing.
Page 84: Using The Diagnose Option With Initialize
Initializing the Access Server Using the DIAGNOSE Option with INITIALIZE Using the DIAGNOSE option with INITIALIZE enables you to test the access server hardware. You can specify three types of tests as described in the INITIALIZE DIAGNOSE Option Tests. The following example shows the DIAGNOSE option with INITIALIZE: Local>...
Page 85: Using Ncp To Initialize The Access Server
Using NCP to Initialize the Access Server NCP Initialization Commands The following table shows the NCP commands used to initialize the access server if you are on a load host: NCP Initialization Commands LOAD TRIGGER The NCP LOAD and TRIGGER commands do not have any automatic warning or delay options.
Page 86: Booting From The Network
Booting from the Network Booting from the Network Loading the Software Image If your network server is configured with Flash RAM, but does not have the correct image, the access server performs a network load. Determining Boot Protocols During the network boot sequence, the access server searches for a load host. The access server tries both MOP and BOOTP protocols in a factory-defined order.
Page 87: Booting Using Console Commands
Booting Using Console Commands Introduction Console functions require DECserver ROM Version 4.0 or greater. If you program Flash RAM with a nonstandard boot image name and a load host is not available, pressing the reset-to-factory button may leave the access server unbootable. Procedure To allow booting of a nonstandard boot image name, perform the following steps: Step...
Page 88: Boot Command Options
Booting Using Console Commands Boot Command Options The following table lists the command options you can select for the boot command: Option Definition This command, without an argument, starts a new boot sequence to load the access server with an executable image using the default boot parameters.
Page 89 Option Definition This command boots the maintenance mode software for the access server. The network load host defines this software and is typically based on the Ethernet MAC address of the access server. This command boots the standard system software for the access server.
Page 91: Configuring Lat Characteristics
Configuring LAT Characteristics Overview In This Chapter This chapter describes how to configure the LAT characteristics for the access server. This chapter contains the following topics: LAT Characteristics Displaying LAT Characteristics ANNOUNCEMENTS Characteristic CIRCUIT TIMER Characteristic IDENTIFICATION Characteristic KEEPALIVE TIMER Characteristic MULTICAST TIMER Characteristic ACCESS SERVER NAME Characteristic NODE LIMIT Characteristic...
Page 92: Lat Characteristics
LAT Characteristics LAT Characteristics Preparing to Change LAT Characteristics Before you change LAT characteristics, make sure to: Install the latest software image on the access server and all load hosts. Read the release notes. Know what devices and cables are connected at the various ports. Enter the SET PRIVILEGED command for the port.
Page 93 Characteristic Default PASSCHECK QUEUE LIMIT RESPONDER Disabled RETRANSMIT LIMIT SERVICE GROUPS 0 ENABLED, 1 to 255 DISABLED LAT Characteristics Range Refer to Section 0 to 200 PASSCHECK Characteristic 0 to 200 QUEUE LIMIT Characteristic – RESPONDER Characteristic 4 to 120 RETRANSMIT LIMIT Characteristic 0 to 255...
Page 94: Displaying Lat Characteristics
Displaying LAT Characteristics Displaying LAT Characteristics Command To Use To display the current LAT characteristics, use the SHOW/LIST/MONITOR SERVER command as shown in the following example. LAT Characteristics Display Example The following example shows a typical display that appears when you use the SHOW SERVER command: Local>...
Page 95: Announcements Characteristic
ANNOUNCEMENTS Characteristic Introduction The ANNOUNCEMENTS characteristic determines if the access server sends LAT multicast messages about local services over the Ethernet. The access server does not send any announcements if no local services are defined. Configure Announcements Example The following example shows how to enable and disable the announcements characteristic: Local>...
Page 96: Circuit Timer Characteristic
CIRCUIT TIMER Characteristic CIRCUIT TIMER Characteristic Introduction The CIRCUIT TIMER characteristic defines the interval at which the access server sends virtual circuit messages to the LAT service node. This value is important for balancing fast response time and network utilization against optimal service node performance.
Page 97: Identification Characteristic
IDENTIFICATION Characteristic Introduction The IDENTIFICATION characteristic is a string that can be up to 40 characters long. This string displays: Under the welcome banner during a login procedure In the SHOW SERVER displays The access server also uses the identification string when it multicasts messages about the availability of services.
Page 98: Keepalive Timer Characteristic
KEEPALIVE TIMER Characteristic KEEPALIVE TIMER Characteristic Introduction The KEEPALIVE TIMER characteristic maintains a virtual circuit between the access server and service node when no messages are exchanged over a period of time. If the keepalive timer expires, the access server sends a message to determine if the service node is still reachable.
Page 99: Multicast Timer Characteristic
MULTICAST TIMER Characteristic Introduction The MULTICAST TIMER characteristic determines the interval at which a service node sends service announcements. Multicast Timer Default Values You can specify a value from 10 to 180 seconds. The default value is 30 seconds. Changing Multicast Timer Values Example The following example shows how to change the multicast timer value: Local>...
Page 100: Access Server Name Characteristic
ACCESS SERVER NAME Characteristic ACCESS SERVER NAME Characteristic Introduction The SERVER NAME characteristic is a string of 1 to 16 characters. This name must be unique on the LAT network. When the access server offers a service, it periodically multicasts the name over the local area network. Default Access Server Name The default access server name is LAT_ethernet-address.
Page 101: Node Limit Characteristic
NODE LIMIT Characteristic Introduction The NODE LIMIT characteristic specifies the maximum number of LAT service nodes that the access server maintains in its node database. The range is from 1 to 2000, and the default is 200. You can also specify a node limit of NONE. This keyword indicates that the only limit is the available memory of the access server.
Page 102: Access Server Number Characteristic
Access SERVER NUMBER Characteristic Access SERVER NUMBER Characteristic Introduction Each access server has a number that uniquely identifies it. Access SERVER NUMBER Values This number is a value from 0 to 32,767. The default is 0. When the access server offers a service, it periodically multicasts the number over the network.
Page 103: Passcheck Characteristic
PASSCHECK Characteristic Introduction The PASSCHECK characteristic determines whether a host is required to provide a password as part of a host initiated contact (HIC) request to a password-protected local service. With PASSCHECK disabled, HIC requests are not required to supply a password.
Page 104: Queue Limit Characteristic
QUEUE LIMIT Characteristic QUEUE LIMIT Characteristic Introduction The LAT QUEUE LIMIT characteristic specifies the maximum number of outstanding connection requests for remote access to access server ports. The range is from 0 to 200, and the default is 100. Special QUEUE LIMIT Values Two values have special meaning: The value 0 disables the queue.
Page 105: Retransmit Limit Characteristic
RETRANSMIT LIMIT Characteristic Introduction The RETRANSMIT LIMIT characteristic specifies the number of times that the access server resends a message without an acknowledgment. After the specified time limit, the access server times out the circuit. If other service nodes offer the same service that timed out, the access server attempts automatic failover.
Page 106: Responder Characteristic
RESPONDER Characteristic RESPONDER Characteristic Access Server Mapping In order to connect to other nodes on the LAN, the access server must be able to map node names, port names, and services to specific nodes. Datagram Types LAT provides the following specific types of datagrams that facilitate this mapping: Datagram Name Service Announcement Solicit Information...
Page 107: Changing The Responder Characteristic
RESPONDER Characteristic Changing the RESPONDER Characteristic The factory default setting for the RESPONDER characteristic is disabled. To enable it, use the following command: Local> CHANGE SERVER RESPONDER ENABLED Use the SHOW SERVER command to determine the current setting. When the feature is enabled, “RESPONDER”...
Page 108: Service Groups
Service Groups Service Groups Introduction A service group defines the access that service nodes and port users have to the network. Each service group has an identifying number from 0 to 255. Viewing Service Groups To view service groups that have access to services on the access server, use the SHOW SERVER command.
Page 109: Tcp/Ip Network Characteristics
TCP/IP Network Characteristics Overview Introduction This chapter describes the configuration characteristics for a TCP/IP network. To enable the access server to operate on a TCP/IP network, you need to: 1) Configure the Internet address and subnet mask. 2) Configure the TCP/IP characteristics, for example: List of commonly used Internet hosts List of gateway addresses List of ARP entries...
Page 110 Learning IP Information From a DHCP Server Assigning WINS Server Addresses 7-2 TCP/IP Network Characteristics...
Page 111: Configuring The Internet Address And Subnet Mask
Configuring the Internet Address and Subnet Mask Tasks You can perform the following tasks: Set an Internet address. Set a subnet mask. Display the Internet address and subnet mask. Alternative: Learning IP Information You can configure the access server to learn IP configuration information from a BOOTP server or a Dynamic Host Configuration Protocol (DHCP) server on the network instead of configuring all of the IP information on the access server manually.
Page 112: Setting An Internet Subnet Mask
Configuring the Internet Address and Subnet Mask Setting an Internet Subnet Mask The Internet subnet mask is used to partition the host section of an Internet address into subnets. The default subnet mask depends on the class of the Internet address that you assigned.
Page 113 Configuring the Internet Address and Subnet Mask supernetting, you can give a Class C subnet mask a range of 255.255.0.0 to 255.255.255.254. This allows you to address a block of Class C IP addresses as a “domain” or a single destination address with more than 254 hosts. TCP/IP Network Characteristics 7-5...
Page 114: Displaying The Internet Address And Subnet Mask
Configuring the Internet Address and Subnet Mask Displaying the Internet Address and Subnet Mask To display the Internet address and subnet mask, use the SHOW/LIST/MONITOR INTERNET command. Internet Address and Subnet Mask Display Example The following example shows how to display the current Internet address and subnet mask for the access server: Local>...
Page 115: Configuring Domain Name System (Dns) Characteristics
Configuring Domain Name System (DNS) Characteristics Tasks This section describes how to display and set the access server characteristics for the Internet domain name system (DNS) to resolve host names into Internet addresses. You can perform the following tasks: Display DNS characteristics. Display DNS counters.
Page 116 Configuring Domain Name System (DNS) Characteristics Nameservers (Learned): 99.99.99.99 88.88.88.88 DHCP server: 16.20.244.250 Local> The following table describes the DNS characteristics that appear in the previous example. (See the Displaying WINS Characteristics section in this chapter for an explanation of the WINS characteristics in the display.) Field Domain Name Resolution Host Limit...
Page 117: Displaying The Dns Counters
Displaying the DNS Counters To display the DNS counters, use the SHOW/LIST INTERNET NAME RESOLUTION COUNTERS command. To reset the DNS counter, use the ZERO INTERNET NAME RESOLUTION COUNTERS command. DNS Counter Display Example The following example shows how to display the various DNS counters: Local>...
Page 118: Configuring The Default Name Resolution Domain
Configuring Domain Name System (DNS) Characteristics Field Bad Responses Truncated Responses Fail Answers FORMERR Answers Duplicate Queries Configuring the Default Name Resolution Domain Configuring the default domain name characteristic enables you to abbreviate Internet host names in commands. To configure the Default Name Resolution Domain, use the DEFINE/SET/CHANGE INTERNET NAME RESOLUTION DOMAIN command.
Page 119 Configuring Domain Name System (DNS) Characteristics The following example shows the procedure for and results of configuring the default name resolution to FINANCE.ACME.COM: Step Action Define the default name resolution domain as follows: Local> CHANGE INTERNET NAME RESOLUTION DOMAIN FINANCE.ACME.COM Enter the following connect command: Local>...
Page 120: Changing The Time Limit
Configuring Domain Name System (DNS) Characteristics Changing the Time Limit The domain name resolution time limit specifies the time that the access server waits before it resends a query to a name server. The range is from 1 to 10 seconds, and the default is 4 seconds.
Page 121: Configuring A List Of Commonly Used Internet Hosts
Mode Stub Slave Configuring a List of Commonly Used Internet Hosts You can optionally enter commonly used Internet host names and addresses in the access server cache. The following command shows how to do this: Local> CHANGE INTERNET HOST SALES ADDRESS 195.1.1.72 Two additional commands enable you to manage the list of commonly used Internet hosts: SHOW/LIST/MONITOR INTERNET HOST...
Page 122 Configuring Domain Name System (DNS) Characteristics A local name server is any name server that is authoritative for the default domain of the access server. Before adding a local name server, you must first define the access server domain name. The following example shows how to enter a local Internet name server: Local>...
Page 123: Assigning Dns Server Addresses Automatically
If the access server cannot reach a learned name server because of gateway restrictions outside the server, it does not flag the unreachable name server. This can often cause name resolution to time out and fail. In this configuration use either the STUB or SLAVE name resolution mode.
Page 124: Configuring A Default Gateway
Configuring a List of Internet Gateway Addresses Configuring a List of Internet Gateway Addresses Introduction If the access server users need to access hosts in different networks or subnets, you can define a database of Internet gateways. The access server uses gateways to route traffic to different networks and subnets.
Page 125: Defining Networks Available Through A Specific Gateway
Defining Networks Available Through a Specific Gateway To indicate that the access server can reach a given network through a specific gateway, use the DEFINE/SET/CHANGE INTERNET GATEWAY command with the NETWORK parameter to do this. Default Gateway Definition Example The following example shows how to define the mapping of the default gateway to the network: Local>...
Page 126: Configuring A List Of Internet Arp Entries
Configuring a List of Internet ARP Entries Configuring a List of Internet ARP Entries Introduction The list of address resolution protocol (ARP) entries maps Internet addresses to Ethernet hardware addresses for devices on the same network as the access server. You only need to enter the network hosts that do not support ARP.
Page 127: Setting The Tcp Keepalive Timer
Setting the TCP Keepalive Timer What the Timer Does The TCP keepalive timer determines whether a TCP connection with a remote host is active and should remain open. After the access server and a remote host establish a TCP connection, the access server waits a set amount of time and sends a keepalive probe to the remote host.
Page 128: Displaying Timer Characteristics
Setting the TCP Keepalive Timer Retry Set Example The following example show how to set the maximum number of keepalive probes that the access server sends (10): Local> CHANGE INTERNET TCP KEEPALIVE RETRY 10 Displaying Timer Characteristics Use the SHOW/LIST INTERNET command to display the TCP keepalive timer characteristics.
Page 129: Displaying The Internet Counters
Displaying the Internet Counters Using the SHOW Command Use the SHOW/LIST/MONIITOR INTERNET command to display the Internet counters. To reset the Internet counters, use the ZERO INTERNET COUNTERS command. To reset the Internet counters, use the ZERO INTERNET COUNTERS command. Internet Counters Display Example The following example shows a typical Internet counters display: Local>...
Page 130: Internet Counter Display Fields
Displaying the Internet Counters Internet Counter Display Fields The following table describes the fields in a typical Internet counters display: Field TCP Segments Transmitted: Received: Segments Discarded: Bytes Transmitted: Bytes Received: IP Packets Transmitted: IP Packets Received: IP Fragments Received: 7-22 TCP/IP Network Characteristics Description The following counters contain statistics on TCP...
Page 131 Field Description IP Fragments Dropped: Total number of IP fragments dropped due to either a lack of memory to store the fragment or received a duplicate fragment. IP Error in Header: Total number of IP datagrams received with errors in the header.
Page 132 Displaying the Internet Counters Field UDP Datagrams Transmitted: Received: Dropped: 7-24 TCP/IP Network Characteristics Description The following counters contain statistics on connections: Total number of UDP datagrams transmitted by the network access server. Total number of UDP datagrams received by the network access server.
Page 133: Learning Ip Information From A Bootp Server
Learning IP Information From a BOOTP Server Introduction Instead of manually configuring IP information, you can have the access server learn its IP address and other IP configuration information from a BOOTP server on the network. If you use the BOOTP server to load the DNAS software on the access server, it can also learn its IP configuration from the BOOTP server during the load operation.
Page 134: Setting Up Ip Configuration Learning
Learning IP Information From a BOOTP Server Setting Up IP Configuration Learning Do the following to set up your access server to learn IP configuration information from a BOOTP server on the network: Step Action Set up the BOOTP server: a) Add an entry for the access server’s Ethernet address.
Page 135: Learning Ip Information From A Dhcp Server
Learning IP Information From a DHCP Server Description You can use the Dynamic Host Configuration Protocol (DHCP) to automatically configure TCP/IP characteristics on the access server and remote clients. DHCP provides dynamic assignment of IP addresses and discovery of IP configuration parameters (for example, subnet mask or default gateways).
Page 136: Dhcp Client Operation
Learning IP Information From a DHCP Server Using a BOOTP Server The access server writes the information it learns from the BOOTP server to NVRAM. DHCP Client Operation During initialization, the access server acts as a DHCP client to obtain IP configuration parameters (excluding the IP address;...
Page 137: Dhcp Proxy Operation
DHCP Proxy Operation The access server can act as a DHCP proxy to provide IP address assignment for most remote clients. IP Address Assignment When you enable DHCP, the access server sends requests for IP addresses to a DHCP server on behalf of the remote client if: You do not configure an IP address on the ports configured for remote access.
Page 138: Enabling And Disabling Dhcp
Learning IP Information From a DHCP Server IP Address Renewals When the DHCP server assigns an IP address to a remote client, it “leases” the address to the remote client for a finite or infinite amount of time. If the lease is about to expire and the remote client still has a dial-up connection, the access server renews the lease on behalf of the remote client.
Page 139: Assigning Wins Server Addresses
Assigning WINS Server Addresses What Does WINS Do? Windows Internet Naming Service (WINS) performs NetBIOS name and IP address resolution, similar to the Domain Name Service (DNS). WINS allows systems that use NetBIOS to communicate with each other over TCP/IP. What Is WINS Autoconfigure? The WINS autoconfigure feature on the access server allows dial-up clients to receive WINS configuration information automatically from the access server when...
Page 140: Assigning Wins Addresses
Assigning WINS Server Addresses Assigning WINS Addresses If you enable DHCP on the access server, it receives the WINS server addresses from a DHCP server on the network and writes the values to VRAM when you reinitialize the access server. When a remote client sends a request to the access server for WINS server addresses during PPP negotiation, the access server responds with the addresses it finds in VRAM.
Page 141 Nameservers (Learned): 99.99.99.99 Local 88.88.88.88 Local DHCP server: 16.20.244.250 Local> The following table lists the WINS characteristics displayed in the previous example. (See the Displaying DNS Characteristics section in this chapter for a description of the DNS characteristics shown in the example.) Field Description Primary...
Page 143: Managing Appletalk
Overview Introduction This chapter explains how to configure and manage the AppleTalk protocol suite on an access server. In This Chapter This chapter contains the following topics: Configuring AppleTalk on an Access Server Displaying AppleTalk Characteristics Displaying AppleTalk Counters Displaying AppleTalk Status Displaying AppleTalk Routes Displaying AppleTalk ARP Entries Chapter 8...
Page 144: Configuring Appletalk On An Access Server
Configuring AppleTalk on an Access Server Configuring AppleTalk on an Access Server Introduction You can configure an access server to act as an AppleTalk node on the network and many different components can then be monitored. The configuration of the AppleTalk characteristics can be done only in the NVRAM database.
Page 145: Disabling Appletalk
Disabling AppleTalk If you decide that your access server should no longer act as an AppleTalk node, all AppleTalk capabilities can be turned off using the following privileged DEFINE command: Local> DEFINE APPLETALK DISABLED Reinitialize the access server to have this command take effect. Upon reinitialization, the access server no longer functions as an AppleTalk node.
Page 146 Configuring AppleTalk on an Access Server The default value for n is the number of access server asynchronous ports divided by 8. For instance, the default cache size on a 16 port access server would be 2. The DEFINE APPLETALK ADDRESS CACHE command lets the access server manager trade off address use versus the probability of simultaneous Appletalk session requests.
Page 147: Displaying Appletalk Characteristics
Displaying AppleTalk Characteristics Commands Use the LIST APPLETALK CHARACTERISTICS command to display the AppleTalk characteristics. This command is nonprivileged. Use the SHOW/MONITOR APPLETALK STATUS command to see the values being used operationally. Displaying AppleTalk Characteristics Example The following example shows how to display the latest values configured by the DEFINE APPLETALK commands: Local>...
Page 148: Displaying Appletalk Counters
Displaying AppleTalk Counters Displaying AppleTalk Counters Command Use the SHOW/MONITOR APPLETALK COUNTERS command to display the AppleTalk counters on an access server. The command is nonprivileged. Displaying AppleTalk Counters Example The following example shows a typical display when you enter the SHOW APPLETALK COUNTERS command: Local>...
Page 149 Field Unsent Responses In Receives Out Requests In Local Datagrams Forwarded Requests Too Short Errors Too Long Errors No Protocol Handlers Checksum Errors Short DDP Errors Displaying AppleTalk Counters Description The number of AARP responses that could not be sent due to insufficient access server resources.
Page 150 Displaying AppleTalk Counters Field Broadcast Errors Out Shorts Out Longs Out No Routes Hop Count Errors Lookups Received Lookup Replies In Errors RTMP Router Lost In Errors In GetNetInfo Responses Out GetNetInfo Requests In Errors 8-8 Managing AppleTalk Description The number of input DDP datagrams dropped because the access server was not their final destination and they were addressed to the link level broadcast.
Page 151: Aarp Values
Displaying AppleTalk Counters AARP Values Two important counter values are those for AARP. Unsent AARP probes or responses can indicate network problems. This happens when the access server is too overloaded to respond to AARP requests. When there are unsent probes, other AppleTalk nodes can acquire AppleTalk addresses used by the access server or its clients.
Page 152: Displaying Appletalk Status
Displaying AppleTalk Status Displaying AppleTalk Status Command Use the SHOW/MONITOR APPLETALK STATUS command to display the AppleTalk status on the access server. The command is nonprivileged. Displaying AppleTalk Status Example The following example shows how to display the AppleTalk status on an access server: Local>...
Page 153 Field Value Description AppleTalk is fully operational. Address The AppleTalk address of the access server, learned from the EtherTalk network at initialization. Its value is 0.0 until the Learning state. Network The AppleTalk network range the access server learned at initialization. If no AppleTalk router is on the access server’s network, the value is 1-65534.
Page 154: Displaying Appletalk Routes
Displaying AppleTalk Routes Displaying AppleTalk Routes Command Use the SHOW/MONITOR APPLETALK ROUTES command to display the available AppleTalk routes to an access server. The command is nonprivileged. Displaying AppleTalk Routes Example The following example shows how to use the SHOW APPLETALK ROUTES command to display available AppletTalk routes: Local>...
Page 155 Field Value Description Status The current state of the route, as follows: The route is known to be valid. Suspect The route is thought valid, but has not been refreshed recently. The route has not been refreshed recently enough to warrant further use. Down The route exists in the routing table, but is not being used.
Page 156: Displaying Appletalk Arp Entries
Displaying AppleTalk ARP Entries Displaying AppleTalk ARP Entries Introduction When an attached host sends a message to an unknown AppleTalk node on the access server network, the access server creates an entry in the AppleTalk ARP cache and transmits an ARP request for the node’s data link address. At this time, the access server does not know the address for the desired node.
Page 157 Field Value Description Local The entry designates either: 1 A host that is presently running AppleTalk 2 The access server AppleTalk address Acquired The entry has been pre-acquired for later use by an attached AppleTalk host. It is also possible that the address has already been used by one or more attached hosts, but has been returned to the address cache.
Page 159: Configuring Basic Device Characteristics
Configuring Basic Device Characteristics Overview Introduction This chapter explains how to configure the basic characteristics for all types of devices that attach to the access server ports. These devices include: Standard DIGITAL video terminals such as the VT100 and VT220 Printers Modems Computers...
Page 160: Introduction
Configuring Basic Device Characteristics Configuring Basic Device Characteristics Introduction If you attach a standard DIGITAL video terminal to an access server port, the basic device characteristics described in this chapter are the only ones that you need to consider. If you are configuring a port to communicate with a modem, PC, computer interface, or nonstandard terminal, refer to the signal characteristics described in Chapter 10 in addition to the characteristics described in this chapter.
Page 161 Characteristic Default LONGBREAK Disabled LOGOUT OUTPUT FLOW Enabled CONTROL PARITY None SPEED 9600 STOP BITS Dynamically TYPE ANSI Configuring Basic Device Characteristics Allowed Refer to Values Section Enabled, Disabled Specifying LONGBREAK LOGOUT Enabled, Disabled FLOW CONTROL Direction Even, Odd, Mark, PARITY None 75,110, 134, 150,...
Page 162: Displaying Basic Device Characteristics
Displaying Basic Device Characteristics Displaying Basic Device Characteristics Command To display basic device characteristics, use the SHOW PORT command. Displaying Port Characteristics Example The following example shows how to display the port characteristics for port 5: Local> SHOW PORT 5 Port 5: Character Size: Flow Control:...
Page 163: Configuring The Access Characteristic
Configuring the ACCESS Characteristic Description The ACCESS characteristic determines which types of devices can use a port. The following table lists and defines the possible values for the port ACCESS characteristic: Characteristic Local (default) Remote Dynamic None Command To set the ACCESS characteristic for a port, use the DEFINE/SET/CHANGE PORT command with the ACCESS keyword.
Page 164: Matching The Port And Device Characteristics
Matching the Port and Device Characteristics Matching the Port and Device Characteristics Introduction You must ensure that the physical characteristics of the access server port match the physical characteristics of the device as described in this section. If these characteristics do not match, the device does not operate correctly. The characteristics that must match are: AUTOBAUD CHARACTER SIZE...
Page 165: Character Size
CHARACTER SIZE and PARITY Settings The AUTOBAUD characteristic functions only if the input and output speeds of the port device are the same and the character size and parity settings have the combinations listed in the following table: Character Size Example: Disabling AUTOBAUD The following example shows how to disable the autobaud characteristic: Local>...
Page 166: Speed
Matching the Port and Device Characteristics Setting Space None (default) Example: Changing the PARITY Settings The following example shows how to change the parity: Local> CHANGE PORT 5 PARITY ODD SPEED The SPEED characteristic enables you to configure the port for devices that operate at the following speeds: 75, 110, 134, 150, 300, 600, 1200, 1800, 2000, 2400, 4800, 9600, 19200, 38400, 57600, and 115200 bits per second (bits/s).
Page 167: Type
TYPE The TYPE characteristic indicates the device attached to the port. Device Types The following table lists device types available for each port of the access server: Device Type Hardcopy Softcopy ANSI (default) Example: Changing the device TYPE The following example shows how to change the device type: Local>...
Page 168: Configuring The Flow Control Characteristic
Configuring the FLOW CONTROL Characteristic Configuring the FLOW CONTROL Characteristic Introduction The FLOW CONTROL characteristic allows the access server to start and stop data transfer between the port and the attached device. Flow control prevents data losses due to lack of buffering space. The FLOW CONTROL characteristic does not apply to data transfer between the access server and a network resource.
Page 169: Dsr
Example: Enabling XON/XOFF FLOW CONTROL The following example shows how to enable XON/XOFF FLOW CONTROL: Local> CHANGE PORT 5 FLOW CONTROL XON DSR FLOW CONTROL operates as follows: If the access server receives data too quickly from the port device, it turns off DTR until it can accept more data.
Page 170: Flow Control Direction
Configuring the FLOW CONTROL Characteristic Example: Disabling FLOW CONTROL The following command shows how to disable FLOW CONTROL on port 5 of an access server: Local> CHANGE PORT 5 FLOW CONTROL DISABLED FLOW CONTROL Direction The access server software allows you to specify flow input and output FLOW CONTROL: Input FLOW CONTROL refers to the data flow from the attached device to the access server.
Page 171: Specifying The Automatic Logout Characteristics
Specifying the Automatic Logout Characteristics Introduction This section describes the characteristics that you can use to log out a port automatically when the device attached to the port is turned off or when there is no activity for a specified period of time. Specifying DSRLOGOUT The DSRLOGOUT characteristic causes the access server to logout a port device when the device deasserts DSR.
Page 172: Specifying Inactivity Logout
Specifying the Automatic Logout Characteristics Specifying INACTIVITY LOGOUT The INACTIVITY LOGOUT characteristic allows you to enable or to disable automatic log out for the port. If INACTIVITY LOGOUT is enabled, the access server automatically disconnects the session and logs out the port if there is no input or output activity for the time specified by the INACTIVITY TIMER characteristic.
Page 173: Configuring Modem Signals
Overview Introduction This chapter describes the various port characteristics that you can use to control the modem signals. You use modem signals to support devices that use these signals, such as modems, computers, and printers. In This Chapter This chapter contains the following topics: DTE/DCE Device Configuration Determining the Supported Modem Signals Modem Signals Description...
Page 174: Dte/Dce Device Configuration
DTE/DCE Device Configuration DTE/DCE Device Configuration Port Configuration The role of the access server in the communication is determined by the configuration of the port and the port device: If the port access characteristic is set to local, the access server appears as a data terminal equipment (DTE) device to a dial-in modem connected as a port device, and as a data communication equipment (DCE) device to a personal computer or terminal.
Page 175: Determining The Supported Modem Signals
Determining the Supported Modem Signals Access Servers and MODEM CONTROL Not all access servers support all modem signals. There are three types of access servers: Full MODEM CONTROL MODEM CONTROL Access servers that support MODEM CONTROL can use only one of two sets of modem signals.
Page 176 Determining the Supported Modem Signals Network Access Server Type DSR/DTR support (Example: DECserver 90TL access server) 10-4 Configuring Modem Signals Modem Signals Supported • Set 2 — Data Signal Rate Selector (DSRS) — RING Indicator (RI) — Data Carrier Detect (DCD) —...
Page 177: Modem Signals Description
Modem Signals Description Types of Modem Signal The following table describes the various modem signals: Modem Signal Request To Send (RTS) Clear To Send (CTS) Data Set Ready (DSR) Data Terminal Ready (DTR) Data Carrier Detect (DCD) Speed Mode Indicator (SMI) Ring Indicator (RI) Modem Signals Description Description...
Page 178 Modem Signals Description Modem Signal Data Signal Rate Selector (DSRS) 10-6 Configuring Modem Signals Description Asserted by the access server to indicate the speed at which the modem should initiate communications. On a port configured for a multispeed modem (where both SPEED and ALTERNATE SPEED are specified), DSRS indicates the higher of the two speeds.
Page 179: Specifying Modem Control And Signal Control
Specifying MODEM CONTROL and SIGNAL CONTROL Introduction The MODEM CONTROL and SIGNAL CONTROL characteristics are identical, except that MODEM CONTROL is only used with full MODEM CONTROL access servers, and SIGNAL CONTROL is used on all other access servers. These characteristics enable or disable the use of MODEM CONTROL signals on a port.
Page 180 Specifying MODEM CONTROL and SIGNAL CONTROL Example: Enabling MODEM CONTROL The following example shows how to enable MODEM CONTROL on port 5: Local> DEFINE PORT 5 MODEM CONTROL ENABLED Local> LOGOUT PORT 5 Example: Enabling SIGNAL CONTROL The following example shows how to enable SIGNAL CONTROL on port 11: Local>...
Page 181: Specifying Signal Select
Specifying SIGNAL SELECT Introduction The SIGNAL SELECT characteristic is used only with MODEM CONTROL access servers. This characteristic determines which of two sets of signals that the access server uses: CTS, DSR, RTS, and DTR RI, DCD, DSRS, and DTR The port device must be cabled correctly to work with the set of signals that you choose.
Page 182: Specifying Signal Check
Specifying SIGNAL CHECK Specifying SIGNAL CHECK Introduction The SIGNAL CHECK characteristic allows the access server to check for any modem signal when a host requests a connection. If any one modem signal is present, the access server makes a connection; otherwise, a connection is denied. If all modem signals are dropped at the port once a connection is made, the access server disconnects the session and logs out the port.
Page 183: Specifying Dtrwait
Specifying DTRWAIT Description When functioning with modems and computer interfaces, the access server port normally asserts the DTR signal at all times except during a disconnect sequence. However, there are instances when assertion of DTR is undesirable. For example, when a computer is offered as a service, the automatic reassertion of DTR after a disconnect sequence might cause the computer to act as if a session is in progress.
Page 184: Specifying Ring
Specifying RING Specifying RING Description The RING characteristic is supported only on those access servers that support the DSRS signal. Certain terminal switches and computers need to detect a RING indicator signal (RI) before they activate. The access server can emulate the RI signal when the port is used with a BC22R or equivalent cable that crosses the DSRS signal of the access server over to the RI pin on the device.
Page 185: Specifying Alternate Speed
Specifying ALTERNATE SPEED Description The ALTERNATE SPEED characteristic is only used with full MODEM CONTROL access servers. Two speeds for a modem port can be defined in the access server database: primary and alternate (or fallback). The primary speed is defined with the speed characteristic; the ALTERNATE SPEED is defined with the ALTERNATE SPEED characteristic.
Page 186: Specifying Dialup
Specifying DIALUP Specifying DIALUP Description The DIALUP characteristic is used to notify LAT service nodes that a port user connected to the service through a dial-in modem. The service node can use this information to implement system security. With DIALUP enabled, the access server sends DIALUP notification to service nodes.
Page 187: Sample Modem Configurations
Sample Modem Configurations Introduction This section provides sample modem configurations for access servers that support full MODEM CONTROL. Configuring a Dial-In Modem on a Full MODEM CONTROL Server The following example provides a sample configuration for a dial-in modem operating at 57600 baud.
Page 188: Configuring A Dial-Out Modem On A Full Modem Control Server
Sample Modem Configurations Configuring a Dial-Out Modem on a Full MODEM CONTROL Server The following example provides a sample configuration for a dial-out modem operating at 1200 baud with an ALTERNATE SPEED of 300 baud: Local> DEFINE PORT 3 ACCESS REMOTE AUTOBAUD DISABLED Local>...
Page 189: Configuring A Dial-Out Modem On A Modem Control Server
Configuring a Dial-Out Modem on a MODEM CONTROL Server The following example provides a sample configuration for a dial-out modem operating at 2400 baud and configured for the RI-DCD-DSRS-DTR signals: Local> DEFINE PORT 3 ACCESS REMOTE AUTOBAUD DISABLED Local> DEFINE PORT 3 AUTOPROMPT DISABLED BREAK DISABLED Local>...
Page 190: Modem Control Sequences
MODEM CONTROL Sequences MODEM CONTROL Sequences Introduction Modem-controlled communication requires that the access server recognize what type of device is on a port and detect when this device is ready to communicate and when the device has ceased to communicate. The following section describes the general sequences of modem signals involved in establishing, in monitoring, and in ending communications.
Page 191: Response To Momentary Loss Of Cts
After first detecting DSR, the access server monitors the port for CTS and DCD. If it detects CTS and DCD within 30 seconds, the access server enables data flow on the line. If it does not detect CTS and DCD within 30 seconds, the access server disconnects the line.
Page 192: Configuring Dtr And Dsr Signals
Configuring DTR and DSR Signals Configuring DTR and DSR Signals Introduction This section describes how to configure DTR and DSR signals for those access servers that do not support the other modem signals. DSR flow control must be disabled when you are using the various port characteristics to control the DSR and DTR signals.
Page 193 Enabled Characteristic DTR and DSR Actions Port status indicates “Signal Wait” if connections cannot be accepted because DSR is deasserted. DTRWAIT Has no affect unless SIGNAL CONTROL is enabled. SIGNAL CONTROL and DTR is asserted only if there is a solicited DTRWAIT remote connection.
Page 194 Configuring DTR and DSR Signals Enabled Characteristic SIGNAL CONTROL and DSRLOGOUT SIGNAL CONTROL, SIGNAL CHECK, and DSRLOGOUT SIGNAL CONTROL, DTRWAIT, and DSRLOGOUT SIGNAL CONTROL, SIGNAL CHECK, DTRWAIT, and DSRLOGOUT SIGNAL CHECK and DSRLOGOUT 10-22 Configuring Modem Signals DTR and DSR Actions Port is logged out if DSR is deasserted after initial assertion.
Page 195: Configuring And Managing Interactive Devices
Configuring and Managing Interactive Overview Introduction This chapter explains how to configure and manage interactive devices, such as terminals, terminal-like devices, and personal computers (PCs) in terminal emulation mode. Before you use the procedures in this chapter, you must: Connect and test the devices. Enable privileged status.
Page 196 Managing Users Managing Sessions 11-2 Configuring and Managing Interactive Devices...
Page 197: Configuring An Interactive Device For Lat Sessions
Configuring an Interactive Device for LAT Sessions Configuring an Interactive Device for LAT Sessions The following example shows a sample configuration of a device connected to LAT services: Local> CHANGE PORT 6 ACCESS LOCAL AUTHORIZED GROUPS 10,24,46 Local> CHANGE PORT 6 AUTOBAUD ENABLED AUTOPROMPT ENABLED Local>...
Page 198: Sample Network Configuration
Configuring an Interactive Device for LAT Sessions Sample Network Configuration The following figure show the sample network configuration for LAT and Telnet sessions: Configuring LAT Group Codes for Interactive Devices Group codes are subdivisions of a LAT network. Group codes are used to partition the network into combinations of service nodes, service-node services, and access server ports.
Page 199: Specifying Autoconnect
Step Action Enable the applicable groups on the port as illustrated by the following commands: Local> CHANGE PORT 5 AUTHORIZED GROUPS 10,24,46 Local> SET PORT 5 GROUPS ALL ENABLED If necessary, disable any unwanted group that was previously enabled. The following commands show how to disable group 0 on port 5: Local>...
Page 200: Specifying Autoprompt
Configuring an Interactive Device for LAT Sessions Specifying AUTOPROMPT The AUTOPROMPT characteristic is only used with the LAT protocol. This characteristic controls the initiation of a login process on some service nodes when a session begins. The access server sends the status of the AUTOPROMPT characteristic whenever you establish a new LAT service session.
Page 201: Specifying Failover
Authentication in Chapter 21 for details. Specifying Failover If a LAT service node suddenly becomes unavailable during a session, the access server searches for another LAT service node that offers the same service. If the access server finds one or more suitable nodes, it attempts to connect to the service on the node with the highest service rating.
Page 202: Displaying Access Server Queue Entries
Configuring an Interactive Device for LAT Sessions The Service Connections Characteristic The service connections characteristic allows you to disable additions to the connection queue when a given service is busy. Changing this characteristic does not affect requests that are already in the queue. Example: Disabling Port Queuing The following example shows how to disable additional queued connections for the service LN03_PRINT:...
Page 203: Show Queue All Display Example
SHOW QUEUE ALL Display Example The following example shows how to generate a queue display. For each queued request, the displays have one line of information arranged in columns under fixed headings. Local> SHOW QUEUE ALL Position Entry Removing Entries from the Access Server Queue Use the REMOVE QUEUE command to modify the connection queue by selectively removing entries from the queue.
Page 204: Configuring Port Characteristics
Configuring an Interactive Device for LAT Sessions Configuring Port Characteristics The port characteristic, remote modification, when enabled, allows a LAT node to modify particular access server port characteristics. These characteristics include speed, character size, parity, and LOSS NOTIFICATION. The LAT node must also support this feature.
Page 205: Configuring An Interactive Device For Telnet Sessions
Configuring an Interactive Device for Telnet Sessions Introduction User-oriented characteristics, such as forward switch and VERIFICATION and the various Telnet session characteristics (see Configuring Individual Telnet Client Session Characteristics in this chapter), are not included in this example. Also, this example assumes that the port and device characteristics match.
Page 206: Reference
Configuring an Interactive Device for Telnet Sessions Reference For a description of the default protocol characteristic, refer to Specifying the Default Protocol in this chapter. For a description of the Telnet client profiles, refer to Specifying the Telnet Client Session Profile in this chapter. 11-12 Configuring and Managing Interactive Devices...
Page 207: Configuring A Session Management (Td/Smp) Terminal
Configuring a Session Management (TD/SMP) Terminal Introduction The MULTISESSION characteristic allows a session management terminal using the terminal device/session management protocol (TD/SMP) to manage each terminal session at the terminal itself, not at the access server. A terminal session is a single session on an access server port that is operating under session management control.
Page 208: Local Mode Command Restrictions During Session Management
Configuring a Session Management (TD/SMP) Terminal The dedicated service characteristic must be disabled. (See the User Account Command Parameters section in this chapter.) Local Mode Command Restrictions During Session Management The following table list the restrictions on some of the access server commands: Command CONNECT DISCONNECT DISCONNECT...
Page 209: Logging In With Multisessions
Logging In with Multisessions The following is a typical procedure for logging in at a session management terminal with MULTISESSIONS enabled at the access server port: Step Action Press the Return key once or twice to obtain the introductory banner and username prompt.
Page 210: Configuring On-Demand Loading For Asian Terminals
Configuring On-Demand Loading for Asian Terminals Configuring On-Demand Loading for Asian Terminals Introduction Asian terminals implementing the On-Demand Loading (ODL) font protocol can communicate with an OpenVMS load host through an access server. The access server software has an on-demand loading characteristic that enables the ODL protocol. When the on-demand loading characteristic is enabled on the access server, the ODL protocol overrides FLOW CONTROL during font loading to allow for Asian characters.
Page 211: Configuring For Block-Mode Terminals
Configuring for Block-Mode Terminals Description Block-mode terminals do not require any special setup to communicate with a host through an access server. The access server software automatically allows terminals that support block mode to transmit large blocks of data without using FLOW CONTROL.
Page 212: Specifying The Telnet Client Session Profile
Specifying the Telnet Client Session Profile Specifying the Telnet Client Session Profile Introduction You can set various features for a Telnet client session. You can either choose a profile that has many of the characteristics predefined or set the characteristics individually (refer to Configuring Individual Telnet Client Session Characteristics in this chapter).
Page 213: Telnet Client Session Characteristics Predefined For Each Profile
Telnet Client Session Characteristics Predefined for Each Profile The following table lists the Telnet client session characteristics that are predefined for each profile. Enabling a profile automatically sets all the characteristics to the value specified by the profile, except those listed as “use current value.” Those characteristics keep their existing value.
Page 214 Specifying the Telnet Client Session Profile Session Characteristics SWITCH CHARACTERS TERMINAL TYPE If ECHO is in local mode, the ECHO characteristics are suppressed, and characters are not echoed. 11-20 Configuring and Managing Interactive Devices Profiles Character Binary Enabled Disabled Use current access Use current access server server value value...
Page 215: Configuring Individual Telnet Client Session Characteristics
Configuring Individual Telnet Client Session Characteristics Modifying Telnet Session Characteristics You can modify the Telnet client session characteristics in two ways: at the port level or for the individual session using the SET SESSION command. Modifying the characteristics at the port level enables those values for Telnet client sessions at that port when sessions are created.
Page 216: Specifying Character Size
Configuring Individual Telnet Client Session Characteristics The following example shows how to disable the BINARY characteristic: Example: Disabling BINARY Characteristics Local> CHANGE PORT 5 TELNET CLIENT BINARY DISABLE Specifying CHARACTER SIZE The CHARACTER SIZE characteristic allows the user to select the character size, 7- or 8-bit, that is used during a session with an Internet host.
Page 217: Telnet Keymapping Functions
Telnet Keymapping Functions The following table shows key function definitions mapped to specific keys. You can disable any of the Telnet commands in this table by using the keyword NONE. For example, to disable AO for port 5, you enter the following: Local>...
Page 218: Specifying Autoflush
Configuring Individual Telnet Client Session Characteristics Specifying AUTOFLUSH The AUTOFLUSH characteristic automatically invokes the AO function whenever you enter the IP, SYNCH, AYT, EOR, or BRK characters. AUTOFLUSH aborts all output on its way to the user’s terminal By default, AUTOFLUSH is enabled for IP, and is disabled for SYNCH and AYT. Example: Disabling AUTOFLUSH The following example shows how to disable AUTOFLUSH for the IP character on port 5:...
Page 219: Specifying Flow Control
NEWLINE TO TERMINAL — When entered, the character sequence is sent to the user’s terminal whenever a NEWLINE FROM HOST sequence is received. The factory-set default is <CRLF>. NEWLINE FROM HOST — When received from the Internet host, the character sequence is interpreted as a new line.
Page 220: Specifying Message Verification
Configuring Individual Telnet Client Session Characteristics The following shows how to enable FLOW CONTROL from port 5 to the device: Local> CHANGE PORT 5 TELNET CLIENT OUTPUT FLOW CONTROL ENABLED Specifying MESSAGE VERIFICATION The MESSAGE VERIFICATION characteristic controls the display of session information when an existing Telnet client session is started, stopped, or resumed.
Page 221: Specifying A Preferred Terminal Type
Configuring Individual Telnet Client Session Characteristics Example: Configuring SWITCH CHARACTER The following example shows how to disable the SWITCH CHARACTERs on port 5: Local> CHANGE PORT 5 TELNET CLIENT SWITCH CHARACTER DISABLED Local> CHANGE PORT 5 LIMITED VIEW ENABLED The limited view characteristic does not apply when you set privileges on the port. Specifying a Preferred Terminal Type The TERMINAL characteristic allows the user to specify a terminal type to be sent to the Telnet host during session startup.
Page 222: Managing Access Server User Accounts
Managing Access Server User Accounts Managing Access Server User Accounts Minimal Setup for Local User Accounts A limited amount of storage is available for defining user account records within the access server volatile and nonvolatile memory. Note Theoretically, all of NVRAM could be allocated for storage of user account data. However, it is important to bear in mind that the total storage space available for user account information will be affected by the quotidian operations of the access server and the total amount of stored data in NVRAM.
Page 223: Show/List/Monitor Useraccount Display
SHOW/LIST/MONITOR USERACCOUNT Display The following table defines the values in the SHOW USSERACCOUNT display: Field Username Password Access Max Connect Time Dialback Number Dialout Number Permissions User Status Forced Callback Dialout Service Authorization Profile Information The access server supports a variety of information in a user or realm default authorization profile.
Page 224: Service Permissions Access
Managing Access Server User Accounts Service Types and Access Levels The following table defines the service type and access level: Service Type Login Framed LOCAL NONE Service Permissions Access The following table shows the type of service permissions a user can have. A user can have more than one type of service permission.
Page 225: User Account Command Parameters
User Account Command Parameters The commands in the following table allow the security manager to manage a small local database to be used for authentication and authorization. The table shows the command keywords associated with user account variables. Command Clause CLEAR/PURGE SET/DEFINE/ CHANGE...
Page 226: Access Command Variables
Managing Access Server User Accounts Command Clause MAX CONNECT USER STATUS ACCESS Access Command Variables The following table defines the ACCESS command parameter variables: Variable Definition LOCAL Local access (only) allowed. FRAMED Framed (PPP, SLIP) access (only) allowed. NONE No access specified; port characteristics or realm default access determine service.
Page 227: Managing Users
Managing Users This section describes various tasks for managing users. Providing a Contact Name and Access Server Location The SET/DEFINE/CHANGE SYSTEM command allows you to provide all access server users with a person’s name to contact in case of problems. This command also allows you to specify the location of the access server.
Page 228: Specifying The Port Username
Managing Users Example: Enabling a Preferred LAT Service on a Specific Node and Port The following example shows how to specify that port 5 connects to port JAMES on node MARKETING for service FILES: Local> CHANGE PORT 5 PREFERRED FILES NODE MARKETING DESTINATION JAMES For the Telnet Protocol To set an Internet host as a preferred service, the port’s default protocol must be set to...
Page 229: Specifying Keys To Switch Between Sessions
Managing Users Specifying Keys to Switch Between Sessions Access server users can define keys as switches. These keys can switch from one session to another without having to return to local mode. When the user presses the key, the access server interprets the character and does not pass it to the service node. Pressing the BACKWARD SWITCH character activates the user’s previous session.
Page 230: Defining The Break Key
Managing Users Defining the Break Key The BREAK characteristic defines how the Break key is used. The Break key can be defined in three ways: LOCAL — Pressing the Break key switches the user from service mode to local mode. This is the factory-set default. The following shows how to set the Break key to LOCAL on port 5: Local>...
Page 231: Specifying Broadcast
Example: Configuring a Key as a Switch The following example shows how to identify “-” as the local switch for port 3: Local> CHANGE PORT 3 LOCAL SWITCH - Example: Disabling a Local Switch The following example shows how to disable the local switch, which is also the factory-set default: Local>...
Page 232: Specifying Loss Notification
Managing Users A user with privileges set can use the privileged BROADCAST ALL command to send a message to all interactive users. Example: BROADCAST ALL The following example shows a sample of a message broadcasted to all users: Local> BROADCAST ALL "Server shut down at 12:15; back up at 1:00." At a port with a session management terminal, broadcast messages are delivered to the current terminal session.
Page 233: Specifying Message Codes
Specifying Message Codes Each access server message has a message code. In the following example, the number 750 is the message code: Local -750- Another port has this name With message codes disabled, the same message would look like: Local - Another port has this name The factory-set default shows the message codes.
Page 234: Displaying Information About The Users
Managing Users Example: Configuring LOCK The following example shows how to enable LOCK on the access server, while disabling LOCK on ports 5 through 7: Local> CHANGE SERVER LOCK ENABLED Local> CHANGE PORT 5-7 LOCK DISABLED Since anyone can LOCK any terminal, the LOCK facility can cause inconvenience in a situation where there are irresponsible users.
Page 235: Specifying User Groups
SHOW/LIST/MONITOR USERS Display Headings The following table provides an explanation of the information in the display in the previous example: Heading Description Port Number of the port. Username Any user name or the name of the port established by the PORT NAME characteristic.
Page 236 Managing Users Current groups (user-specified groups) are stored only in the operational database. Therefore, users must use the SET PORT command to configure these groups; users cannot use the DEFINE PORT or CHANGE PORT command. Current groups are always equal to or a subset of the AUTHORIZED GROUPS. If a user enters SET PORT GROUPS ALL, the current groups consist of all the enabled authorized groups.
Page 237: Managing Sessions
Managing Sessions This section shows how to initiate and terminate sessions and how to display session information. Initiating a Session to a LAT Service To initiate a session to a LAT service, use the CONNECT LAT command with the service name. If the default protocol (refer to Specifying the Default Protocol in this chapter) is set to LAT or ANY, you can ignore the LAT keyword.
Page 238: Sending Telnet Functions To A Remote Telnet Server
Managing Sessions Example: Initiating a Session with an Internet Host The following three commands show how to initiate a session with the same host. The first command uses the relative domain name, SALES; the second command uses the absolute domain name SALES.MARKETING.DEC.COM; and the third command uses the Internet address, 129.122.30.11.
Page 239: Controlling The Number Of Sessions
command starts a PING session, which continues until the PING succeeds (and sends a VERIFICATION message) or until the timeout period of 30 seconds is exceeded. The following shows how to test the communication to an Internet host with an address of 22.46.72.167: Local>...
Page 240: Displaying Session Information
Managing Sessions For ports with session management terminals, the kind of terminal at the port further determines the port’s session limit, where the access server port can support up to eight terminal sessions. However, terminal devices typically support a maximum of less than eight terminal sessions.
Page 241 SHOW/MONITOR SESSIONS Display Fields The following table describes the information in the SHOW/MONITOR SESSIONS display: Field Description Session n Number of the session. First column Status of a session, which can be one of the following: Connected Connecting Disconnected Disconnecting Signal Wait Queued at n Second...
Page 242: Displaying Session Characteristics
Managing Sessions Displaying Session Characteristics You can display the characteristics of any current LAT or Telnet session. Example: SHOW PORT SESSIONS CHARACTERISTICS Display for a LAT Session The following example displays the characteristics of LAT session 1 on port 4: Local>...
Page 243 SHOW/MONITOR PORT SESSIONS STATUS Display Fields The following table provides a description of the SHOW/MONITOR PORT SESSIONS STATUS display information: Field Description Do-Binary Enabled — Interpreting all data received as in a BINARY access server format. Disabled — Not interpreting all data received as in a BINARY format.
Page 244 Managing Sessions Field Do-End of Record Will-End of Record Do-Remote FLOW CONTROL Will-Remote FLOW CONTROL Will-Terminal Type 11-50 Configuring and Managing Interactive Devices Description Enabled — The access server is enabled to receive EOR commands. Disabled — The access server is not enabled to receive EOR commands.
Page 245: Terminating Sessions
Managing Sessions Terminating Sessions There are two commands you can use to terminate a session on another port: The privileged LOGOUT PORT command allows you to manually log out any port, and all sessions terminate at the specified port. If the port device supports session management, the LOGOUT PORT command disconnects all the terminal sessions (and the associated sessions) then logs out the port.
Page 247: Configuring And Managing Lat Services
Configuring and Managing LAT Services Overview Introduction This chapter explains how to configure devices attached to the access server ports as LAT services. A LAT node can offer devices as LAT services to users on the port itself and other LAT nodes. Prerequisites Before you use the procedures in this chapter, you must: Connect and test the devices.
Page 248: Configuring A Port To Offer A Lat Service
Configuring a Port to Offer a LAT Service Configuring a Port to Offer a LAT Service Configuration Parameters After you attach a device to a port and ensure that the port and device characteristics match, you need to specify certain configuration parameters to enable all devices as LAT services.
Page 249: Configuring Access To A Lat Service
Configuring Access to a LAT Service Assigning a Service Name A service name is a name you assign to the LAT service using the CHANGE SERVICE NAME command. When you assign a service name, the access server periodically multicasts the service’s availability over the network. When you select a service name for a device, follow these guidelines: Service names must be 1 to 16 characters long and cannot be abbreviated.
Page 250: Assigning An Identification String
Configuring Access to a LAT Service Assigning an Identification String A service identification string helps users recognize and use the service. It can be up to 40 characters in length. The factory-set default is no identification string. Example: Assigning the Service Name, to a Specific Port and Identification String The following example shows how to assign a service name LN03_PRINT to the printers connected to ports 5, 6, 7, and 12.
Page 251: Specifying The Service Password
Configuring Access to a LAT Service Specifying the Service Password An optional service password restricts access to a service. When a service contains a password, the access server prompts you for the password before allowing you to use the service. There are two characteristics that you need to specify: SERVICE PASSWORD and PASSWORD LIMIT.
Page 252: Configuration Of Specific Types Of Devices As Lat Services
Configuration of Specific Types of Devices As LAT Services Configuration of Specific Types of Devices As LAT Services Introduction This section provides examples of configuring the following types of devices as LAT services: A personal computer (as both a LAT service and a terminal) A computer A modem A printer...
Page 253: Configuring A Computer As A Lat Service
Configuration of Specific Types of Devices As LAT Services Local> DEFINE PORT 2 LOCAL SWITCH ^L PASSWORD DISABLED PREFERRED NONE Local> DEFINE PORT 2 SIGNAL CHECK ENABLED SIGNAL CONTROL DISABLED Local> LOGOUT PORT 2 Local> CHANGE SERVER SERVICE GROUPS 10,24,46 ENABLED Local>...
Page 254: Configuring A Modem As A Lat Service
Configuration of Specific Types of Devices As LAT Services Configuring a Modem As a LAT Service The following example shows a sample configuration of a dial-out modem used as a LAT service: Local> DEFINE PORT 3 ACCESS REMOTE AUTOBAUD DISABLED Local>...
Page 255: Configuring A Printer As A Lat Service
Configuring a Printer As a LAT Service After you configure a printer as a LAT service, you need to set up the appropriate LAT remote print queue as described in the following sections of this chapter: Setting Up a LAT Remote Print Queue on an OpenVMS Host and Setting Up a LAT Remote Print Queue on an ULTRIX System.
Page 256 Configuration of Specific Types of Devices As LAT Services Creating a Logical Device to Access a Printer Service The following example shows how to run LATCP to create a logical device. This example configures the logical port LTA1925 to access the LAT service PRINT. $RUN SYS$SYSTEM:LATCP LCP>...
Page 257: Setting Up A Lat Remote Print Queue On An Ultrix System
$SET DEVICE LTA1925: /SPOOLED=(LN03_QUE,SYS$SYSDEVICE:) $DEFINE/FORM LN_FORM 10 /WIDTH=60 /STOCK=DEFAULT /TRUNCATE $! Initialize and start the print queue $INIT/QUE /START /PROCESSOR=LATSYM /RETAIN=ERROR- /DE- FAULT=(NOBURST,FLAG=ONE) /RECORD_BLOCKING LN03_QUE/ON=LTA1925: $EXIT On a VAXcluster system, you can configure the applications ports on the local node only.
Page 258 Configuration of Specific Types of Devices As LAT Services :lf=/usr/lib/adm/lpd-errs: # cd /usr/spool # mkdir lpd # chown daemon lps # lpr -Plps test 12-12 Configuring and Managing LAT Services...
Page 259: Configuring A Printer With Unannounced Availability
Configuring a Printer with Unannounced Availability Introduction This section describes how to configure a printer with unannounced availability. The only users that know about the device’s availability are those users that you tell about the device. By defining a port name and not a service name, you can configure a device on the access server for access by users on a LAT network.
Page 260 Configuring a Printer with Unannounced Availability Example: Configuring a Printer with Unannounced Availability on a LAT Network on Port 4 Local> DEFINE PORT 4 ACCESS REMOTE AUTHORIZED GROUPS 10,24,46 Local> DEFINE PORT 4 AUTOBAUD DISABLED AUTOCONNECT DISABLED Local> DEFINE PORT 4 DEDICATED NONE DSRLOGOUT DISABLED Local>...
Page 261: Verifying The Lat Service
Verifying the LAT Service Do This To verify whether the service is functioning, try connecting to the new service. Once connected, you can assess whether the device responds appropriately. The appropriate response depends on what device is attached to the access server port. When you have adequate information, return to local mode (press the Break key or a local-switch character) and disconnect the service by typing DISCONNECT at the Local>...
Page 262: Managing Your Access Server As A Lat Node Offering A Service
Managing Your Access Server As a LAT Node Offering a Service Managing Your Access Server As a LAT Node Offering a Service Introduction By default, once there is a service, the access server functions as a service node by issuing multicast service announcements, which describe its available services to access servers on the network.
Page 263 Managing Your Access Server As a LAT Node Offering a Service Example: SHOW SERVICE CHARACTERISTICS Display The following example below shows how to generate a service characteristics display for the service named PRINTER: Local> SHOW SERVICE PRINTER CHARACTERISTICS Service: PRINTER Identification: Printer Ports to PEACH Ports: 1-3, 5, 7 Rating: 255...
Page 264: Displaying Services Status
Managing Your Access Server As a LAT Node Offering a Service Field Displaying Services Status The SHOW/LIST/MONITOR SERVICE STATUS command displays information about the operational condition of the network and its services, including services offered by your access server. The display includes a list of the nodes that offer the selected service or services.
Page 265 Managing Your Access Server As a LAT Node Offering a Service Example: SHOW SERVICE STATUS Display The following example shows how to generate a service status display for a service named DEVELOP: Local> SHOW SERVICE DEVELOP STATUS Service DEVELOP - Available Node Name Status Rating Identification ORANGE Reachable...
Page 266: Displaying Services Summary
Managing Your Access Server As a LAT Node Offering a Service Heading Rating Identification Displaying Services Summary The SHOW/MONITOR SERVICES SUMMARY command displays one line of information on each selected service or services. Use the keyword LOCAL to obtain information on locally defined services. Without the keyword LOCAL or a particular service name, you get information on all network services.
Page 267 Managing Your Access Server As a LAT Node Offering a Service Example: SHOW SERVICE SUMMARY Display The following example shows how to generate a service summary display for all network services: Local> SHOW SERVICES ALL SUMMARY Service Name Status DEVELOP Connected DOCUMENT Available...
Page 269: Configuring And Managing Telnet Servers
Configuring and Managing Telnet Servers Overview Introduction This chapter explains how to configure various types of devices as a Telnet or raw TCP server. A Telnet or raw TCP server is a resource on a TCP/IP network. To use the procedures in this chapter, you must: Connect and test the devices Enable privileged status Configure the port and device characteristics to match...
Page 270: Sample Device Configurations
Sample Device Configurations Sample Device Configurations Introduction This section provides examples of configuring the following types of devices for access through a Telnet listener: A printer A computer A modem You must configure the device and port characteristics as described in Chapter 9 before performing the procedures described in this chapter.
Page 271: Configuring A Computer For Access Through A Telnet Listener
Local> CHANGE TELNET LISTENER 2010 PORTS 4 ENABLED Local> CHANGE TELNET LISTENER 2010 IDENTIFICATION "PRINTER" Local> CHANGE TELNET LISTENER 2010 CONNECTIONS ENABLED Configuring a Computer for Access Through a Telnet Listener The following example shows a sample configuration of a computer used for access through a Telnet listener on port 2: Local>...
Page 272 Sample Device Configurations Example: Configuring a Dial-In and Dial-Out Modem The following example shows a sample configuration of a dial-out modem used for access through a Telnet listener on port 4: Local> DEFINE PORT 4 ACCESS DYNAMIC AUTOBAUD DISABLED Local> DEFINE PORT 4 DSRLOGOUT DISABLED FLOW CONTROL XON Local>...
Page 273: Sample Configuration
Configuring a Personal Computer As a Terminal and for Access through a Telnet Listener Configuring a Personal Computer As a Terminal and for Access through a Telnet Listener Sample Configuration To configure a PC for access through a Telnet listener only, use the following example and: Substitute MODEM CONTROL for SIGNAL CONTROL if your access server supports modem control.
Page 274: Setting User Priority For Devices Using Dynamic Access
Configuring a Personal Computer As a Terminal and for Access through a Telnet Listener Setting User Priority for Devices Using Dynamic Access You can enable interrupts if you want the owner or main user of the device to have full control over it.
Page 275: Configuring A File Transfer Partner
Configuring a Personal Computer As a Terminal and for Access through a Telnet Listener Configuring a File Transfer Partner The access server supports the file transfer capability of a personal computer on an access server port. This allows a user of a personal computer to send and receive files over the LAN.
Page 276: Configuring A Remote Print Queue
Configuring a Remote Print Queue Configuring a Remote Print Queue Introduction The following sections explain how to configure a print queue on an ULTRIX or UNIX system. Configuring a TCP/IP Remote Print Queue on an ULTRIX System An ULTRIX print spooler can be configured to access one or more access server ports through the access server Telnet listener.
Page 277: Procedure
Procedure The following procedure describes how to configure an ULTRIX (Version 4.0 or subsequent maintenance release) host’s print system. The host will use the access server internet address and Telnet listener TCP port number to connect to the access server printer port. It is assumed that you are familiar with configuring an ULTRIX print system.
Page 278: Configuring A Tcp/Ip Remote Print Queue On A Unix System
Configuring a Remote Print Queue Step Action Modify the printcap entry: ds0|lp1:\ :lp=@tsb0c3/prds3:\ :sd=/usr/spool/lpd1: The tsb0c3 entry identifies the access server internet address and is an entry in /etc/hosts for the access server. The prds3 entry identifies the access server TCP port number and is an entry in /etc/services.
Page 279: Configuring A Telnet Listener
Configuring a Telnet Listener Introduction Perform the following steps to assign a Telnet listener to one or more devices attached to access server ports: Step Action Assign a TCP port to the access server port. The access server uses 23, and 2001 to 2032 as TCP port numbers.
Page 280: Configuring Telnet Server Session Characteristics
Configuring Telnet Server Session Characteristics Configuring Telnet Server Session Characteristics Introduction The following sections describe how to configure the various Telnet server session characteristics. Mapping Event Indications to Keyboard Characters You can map the event indications to keyboard characters. The factory-set default for each indication is that no character is sent to the device or application on the access server port set up as a Telnet server port.
Page 281: Specifying Newline Characteristics
Event Indication Erase Previous Line (EL) No operation (NOP) Specifying Newline Characteristics The NEWLINE characteristics allow the person managing the access server to define a new line as a 1- or 2-character sequence. In this case, TERMINAL specifies the user at the remote end of the connection (Telnet client) and HOST specifies the device connected to the access server (Telnet server).
Page 282 Configuring Telnet Server Session Characteristics Example: Setting Character Size in a Specific Direction The following example shows how to set CHARACTER SIZE to 7 in the TRANSMIT direction: Local> CHANGE PORT 5 TELNET SERVER TRANSMIT CHARACTER SIZE 7 To set the character size in the receive direction, use RECEIVE instead of TRANSMIT.
Page 283: Managing Your Access Server As A Telnet Listener Node
Managing Your Access Server As a Telnet Listener Node Introduction This section contains the procedures to display and remove Telnet listeners. Displaying Telnet Listeners The SHOW/LIST/MONITOR TELNET LISTENER command displays the Telnet listener characteristics. The ALL characteristic displays all the Telnet listeners. You can specify a specific Telnet listener by its TCP port number.
Page 284: Removing A Telnet Listener
Managing Your Access Server As a Telnet Listener Node Removing a Telnet Listener You can remove a Telnet listener that was defined in either the permanent or operational databases. Use the privileged CLEAR TELNET LISTEN command (which acts on the operational database) or PURGE TELNET LISTEN command (which acts on the permanent database) to remove a defined Telnet listener and its associated characteristics.
Page 285: Reassigning A Port
Reassigning a Port This process allows you to manage a failed access server port that is configured as a Telnet listener. Use the following steps to reassign a port: Step Action Use the LIST PORT n CHARACTERISTICS command to learn the values used in the existing configuration.
Page 286: Supplying User Location Data To Telnet Servers
Supplying User Location Data to Telnet Servers Supplying User Location Data to Telnet Servers Introduction When the access server creates a Telnet client connection, it automatically negotiates with the Telnet server to send port user data. If the server responds with a “send” message, the access server transmits the session port name and port number.
Page 287: Configuring A Raw Tcp Listener
Configuring a Raw TCP Listener Introduction When you configure a Telnet listener to use raw TCP, the associated port sends data to a device or a remote host without any data manipulation or interpretation of control characters. Because raw TCP sends the data it receives to a port without any interpretation, sending data this way is faster than using the Telnet protocol.
Page 288: Displaying Raw Tcp Characteristics
Configuring a Raw TCP Listener Displaying Raw TCP Characteristics Use the SHOW/LIST TELNET LISTENER command to view the raw TCP settings. Example: Raw TCP Display The following example shows a typical display for a Telnet listener configured for raw TCP: Local>...
Page 289: Configuring Lpd Printers
Overview Introduction The Line Printer Daemon (LPD) handles remote networking printing. It listens for print requests from remote hosts on the Local Area Network (LAN) and responds to these requests. The LPD software that the access server implements is similar in function to the LPR/LPD (Line Printer Remote/Daemon) on UNIX systems.
Page 290: Lpd Operation
LPD Operation LPD Operation Supported File Types The access server’s LPD implementation supports printing of ASCII text and PostScript files. The access server does not convert files from one format to the other. Users must be aware of the type of file they want to print and select the appropriate printer when submitting a print job.
Page 291 sends the user data to the printer as the last page of the print job. In this situation, the access server cannot display or use user information from the control file while the file is printing. If the Data File Arrives Does the Header/ First and the: Trailer Print?
Page 292: Operation
LPD Operation Operation The access server receives print requests from remote hosts on TCP port 515. It uses LPD to send the file to a local printer through the access server’s LAN interface and a serial port. The following occurs when a host on the LAN uses LPD to send a print job to the access server: 14-4 Configuring LPD Printers...
Page 293: Configuring Lpd
Configuring LPD Configuring Remote Hosts Remote network printing using LPR/LPD requires that you set up the host system correctly. The following table describes the setup requirements for specific types of hosts: If Printing From This Host: UNIX Windows NT VMS UCX Associating a Printer With a Port To allow remote network printing with LPD, associate a printer with one or more ports.
Page 294: Setting Port Characteristics
Configuring LPD The following table lists the print characteristics that you can configure: Characteristic AUTOCR CONNECTIONS FLAGPAGE HEADER IDENTIFICATION TRAILER TYPE Setting Port Characteristics For LPD to communicate with your printers, you must set the following port characteristics: ACCESS REMOTE AUTOBAUD DISABLED FLOW CONTROL, PARITY, SPEED and STOP BITS to match the printer’s settings...
Page 295: Printer Configuration Example
Printer Configuration Example The following example shows how to configure the access server to use LPD for remote network printing: Local> DEFINE PRINTER LPS32_PS CONNECTIONS ENABLED HEADER ENABLED PORTS 4,5 TRAILER DISABLED AUTOCR DISABLED In this example: The name of the printer is LPS32_PS. The printer is set to allow users to submit print jobs to it.
Page 296 Configuring LPD Flow Control: Parity: Stop Bits: Access: Backwards Switch: Break: Forwards Switch: Default Protocol: Preferred Service: None Authorized Groups: (Current) Groups: Enabled Characteristics: Broadcast, Failover, Notification, Message Codes, Local> SHOW PRINTER SPEEDY STATUS Printer: Identification: Print Jobs: 459285 Printer Service Status: Port User 14-8 Configuring LPD Printers...
Page 297: Configuring And Managing Slip Ports
Configuring and Managing SLIP Ports Overview Introduction This chapter explains how to configure and manage access server ports for use with PCs and computers acting as serial line Internet protocol (SLIP) hosts. A SLIP host is an Internet host that uses SLIP as its data link over low-speed serial lines. To use the procedures in this chapter, you must: Ensure that the devices support SLIP.
Page 298 Establishing Terminal Sessions with a PC Establishing a SLIP Session Establishing a SLIP Session Compressed SLIP Displaying SLIP Counters Disabling SLIP 15-2 Configuring and Managing SLIP Ports...
Page 299: Packet Forwarding To And From Slip Hosts
Packet Forwarding to and from SLIP Hosts Description During SLIP sessions, the access server forwards packets from an attached SLIP host through the Ethernet interface to the Internet. When the access server receives a packet addressed to an attached SLIP host, it forwards the packet to that host. The access server also directly forwards packets from one attached SLIP host to another attached SLIP host.
Page 300: Displaying Slip Characteristics
Displaying SLIP Characteristics Displaying SLIP Characteristics Introduction The LIST/SHOW/MONITOR SLIP CHARACTERISTICS command enables you to display the SLIP configuration for a given port. The characteristics that you manage are the host address, the Maximum Transmission Unit (MTU) and the compression. If you change SLIP characteristics while a SLIP session is already established, the changes have no effect until you start a new SLIP session.
Page 301: Managing Internet Addresses For Slip Hosts
Managing Internet Addresses for SLIP Hosts Introduction The Internet address for the SLIP host must be unique on the subnet and must have the same subnet identifier as the access server. A subnet identifier is the result of a logical AND operation on the Internet address and the subnet mask.
Page 302 Managing Internet Addresses for SLIP Hosts How a Port Automatically Obtains the SLIP Host Address If you configure a port for SLIP communication and do not assign a host address, the access server does the following: Reads the source address from the attached host’s first output IP packet. Automatically assigns this address to the port if it is valid.
Page 303: Managing The Maximum Transmission Unit
Managing the Maximum Transmission Unit Introduction The maximum transmission unit (MTU) value specifies the maximum size of the datagram that a given access server port accepts. The range is 64 to 1500 bytes. The default is 1500 bytes. Changing the MTU You can change the MTU value using the SET/DEFINE/CHAGE PORT n MTU command.
Page 304: Configuring A Port So That A Pc Can Function As A Terminal Or Slip Host
Configuring a Port So That a PC Can Function as a Terminal or SLIP Host Configuring a Port So That a PC Can Function as a Terminal or SLIP Host Introduction This section describes how to configure an access server port so that you can use an attached PC as a both a terminal and a SLIP host.
Page 305: Configuring A Dedicated Slip Port
Configuring a Dedicated SLIP Port Introduction The dedicated SLIP port allows a single SLIP session. Before you perform this procedure, you must configure the device and port characteristics as described in Chapter 9. Configuring a Device As a Dedicated SLIP Host The following example shows a sample configuration of a dedicated SLIP port: Local>...
Page 306: Configuring A Dial-In Modem For Use With A Slip Host
Configuring a Dial-In Modem for Use with a SLIP Host Configuring a Dial-In Modem for Use with a SLIP Host Introduction Before you perform this procedure, you must configure the device and port characteristics as described in Chapter 9. Configuring a Dial-In Modem on Port 6 for Use with a SLIP Host The following example shows a sample configuration of a port using a dial-in modem for use with a SLIP host on a full modem control access server: Local>...
Page 307: Establishing Terminal Sessions With A Pc
Establishing Terminal Sessions with a PC Prerequisites Before you can use a PC to establish a terminal session with the access server, you must: Configure the device and port characteristics as described in Chapter 9. Enter the commands to set up SLIP operating characteristics as shown in the Example: Configuring a PC As a Terminal and SLIP Host, in this chapter.
Page 308: Establishing A Slip Session
Establishing a SLIP Session Establishing a SLIP Session Enabling a SLIP Session from the PC The following example shows how a nonprivileged user could configure and start a SLIP session. The example assumes that the port characteristics are configured as shown this example.
Page 309: Compressed Slip
Compressed SLIP Introduction The access server has the ability to enable compressed SLIP (CSLIP). Enabling CSLIP compresses the lengthy headers of IP datagrams on low-speed asynchronous serial lines. Therefore, enabling CSLIP can improve performance. Enabling CSLIP Use the SET/CHANGE PORT n SLIP COMPRESSION command to enable or disable CSLIP.
Page 310: Displaying Slip Counters
Displaying SLIP Counters Displaying SLIP Counters Commands The SHOW/MONITOR PORT SLIP COUNTERS command displays the various SLIP counters. To reset the counters, use the ZERO COUNTERS PORT SLIP command. SHOW PORT SLIP COUNTERS Display The following example shows a typical SLIP counters display: Local>...
Page 311: Disabling Slip
Disabling SLIP Command Use the CHANGE PORT n SLIP DISABLED command to disable SLIP on a port. Disable SLIP Example The following example shows how to disable SLIP on port 2: Local> CHANGE PORT 2 SLIP DISABLED Disabling SLIP Configuring and Managing SLIP Ports 15-15...
Page 313: Configuring For Snmp Access
Configuring for SNMP Access Overview Introduction This chapter describes how to configure the access server simple network management protocol (SNMP) agent so that it can be controlled by a remote Network Management Station (NMS). Reference For complete information about managing SNMP on the access server, refer to the file snmp_survival.txt contained in the software installation kit.
Page 314: Supported Snmp Features
Supported SNMP Features Supported SNMP Features Supported Specifications The access server supports the SNMP specifications listed in the following table: Specification RFC 1155 RFC 1157 SNMP Community Names An SNMP community name is a character string that the NMS uses as a password to gain access to the access server.
Page 315: Supported Mibs
Supported MIBs The access server supports the Management Information Bases (MIBs) listed in the following table. The release kit contains all supported MIBs. The network manager can enroll these MIBs in the appropriate NMS. Description RFC 1213 Management Information Base (MIB II) for Internet protocol suite management.
Page 316 Supported SNMP Features Supported Management Information Base Variables The following figure illustrates the access server implementation of MIB-II, the Character MIB, RS-232-like MIB, AppleTalk MIB, and Ethernet-like MIB variables. The objects described in this section are implemented as defined in RFCs 1213, 1243, 1284, 1316, and 1317.
Page 317: Configuring The Access Server For Snmp Access
Configuring the Access Server for SNMP Access Enabling and Disabling SNMP The access server must have an Internet address to enable SNMP. To enable SNMP, enter: Local> CHANGE SNMP ENABLED To disable SNMP, enter: Local> CHANGE SNMP DISABLED Displaying Information About SNMP Use the SHOW SNMP command to display the access server’s SNMP characteristics.
Page 318: Configuring A Community Name For Access By Any Nms
Configuring the Access Server for SNMP Access Configuring a Community Name for Access by Any NMS Use the CHANGE SNMP COMMUNITY community-name SET ENABLED command to create a community name. When you create a community name without specifying an address the access server assigns the default address ANY.
Page 319: Configuring Community Names To Send Trap Messages
Configuring Community Names to Send TRAP Messages You can optionally configure the access server to send TRAP messages to a specific NMS for each community name. The access server generates TRAP messages in response to the events listed in the following table: This Event: Cold start Line up...
Page 320: Sample Snmp Configuration
Configuring the Access Server for SNMP Access Sample SNMP Configuration The following figure is a diagram of a network configuration that results from the commands in the Configuring a Community Name for Access by Any NMS, Configuring a Community Name with an Address, and Configuring Community Names to Send TRAP Messages sections: Disabling TRAP Messages for a Community Name To disable TRAP messages, use the CLEAR SNMP COMMUNITY community-name...
Page 321: Removing An Address From A Community Name
Configuring the Access Server for SNMP Access After you remove a community name, any NMS that used the community name is no longer able to communicate with the access server. The following example shows how to remove community name BUGS: Local>...
Page 322: Configuring The Nms
Configuring the NMS Configuring the NMS Procedure To configure an NMS to manage an access server using SNMP, do the following: Step Action Enter the access server management information bases (MIBs) in the NMS database (see Supported MIB Variables in this chapter). The software installation kit includes ASCII text files of these MIBs.
Page 323: Managing The Access Server
Managing the Access Server Overview Introduction The following lists the actions you perform to manage the access server. These actions should be done on an as-needed basis. Manage the access server as part of the LAT network. Manage the access server as part of the TCP/IP network. Manage access server characteristics.
Page 324: Managing Your Access Server As Part Of The Lat Network
Managing Your Access Server As Part of the LAT Network Managing Your Access Server As Part of the LAT Network Introduction The network manager should coordinate the activities of service nodes and access servers. This section describes a set of configuration guidelines that helps maximize performance from your LAT network.
Page 325: Reducing Memory Usage
The following example shows how to decrease the node limit to 100: Local> CHANGE SERVER NODE LIMIT 100 Reducing Memory Usage Set the node limit characteristic to a lower value. The access server automatically reduces the number of nodes in the database. This reduces the amount of memory used by the node database.
Page 326 Managing Your Access Server As Part of the LAT Network SHOW/LIST/MONITOR NODE STATUS Display Fields The following table describes the information in the fields and headings of the node status display: Field Node LAT Protocol Vx.x Address Data Link Frame Size Identification Node Groups Service Name column...
Page 327: Viewing Lat Node Counters Information
Field Rating column Viewing LAT Node Counters Information The SHOW/MONITOR NODE COUNTERS command displays the counters for messages transmitted between the access server and the selected LAT service nodes. The counters apply only to the specified LAT service nodes. Some of these counters are also maintained for all the service nodes that the access server recognizes.
Page 328 Managing Your Access Server As Part of the LAT Network Example: SHOW/LIST/MONITOR NODE COUNTERS Display The following example shows how to generate a display of the counters for LAT messages between the access server and a service node named PEACH. Each counter displayed has a maximum value of 4,294,967,295.
Page 329 Managing Your Access Server As Part of the LAT Network Field Description Multiple Node Addresses Number of times that a node advertised itself with a physical address different from that in a previous advertisement. Duplicates Received Number of messages the access server received from this node that were not in the correct sequence.
Page 330: Viewing Lat Node Summary Information
Managing Your Access Server As Part of the LAT Network Field Solicitations Rejected Viewing LAT Node Summary Information The SHOW NODE SUMMARY command produces a line of information for each selected service node. This display is useful to determine if a service node is reachable. The node summary is the default display class for the NODE and NODE ALL entity specifications.
Page 331 Managing Your Access Server As Part of the LAT Network Example: NODE SUMMARY Display The following example shows how to generate a node summary display: Local> SHOW NODE ALL SUMMARY Node Name Status BANANA 2 Connected ORANGE Reachable PEACH Unreachable PEAR Requesting TEST...
Page 332: Displaying Information About The Access Server
Displaying Information About the Access Server Displaying Information About the Access Server Introduction The LIST/MONITOR/SHOW SERVER command displays information about the access server or about data maintained by the access server. You can obtain characteristics, counter, status, and summary displays for the access server. Specifying the Prompt The factory-set default access server prompt is Local>.
Page 333 Each counter has a maximum value of 4,294,967,295. If a counter reaches that value, it latches (remains) at that value until either the counters are set to zero or the access server is initialized. Example: SHOW SERVER COUNTERS Display The following example shows how to generate an access server counters display: Local>...
Page 334: Frames Received: 8087172
Displaying Information About the Access Server Field Frames Received Frames Sent Multicast Bytes Rcv’d Multicast Bytes Sent Multicast Frames Rcv’d Multicast Frames Sent Frames Sent, Deferred Frames Sent, 1 Collision Frames Sent,2+ Collisions Send Failures 17-12 Managing the Access Server Description Number of datagram frames successfully received by the access server, including...
Page 335: Receive Failures
Displaying Information About the Access Server Field Description Send Failure Reasons Mask providing information about the type or types of send failure encountered if the Send Failures counter is not zero. This is a cumulative mask.The following are the bits defined in the mask: If a reason for send failures is heartbeat errors and the access server characteristic...
Page 336: Data Overrun
Displaying Information About the Access Server Field Receive Failure Reasons Unrecognized Destination Data Overrun User Buffer Unavailable 17-14 Managing the Access Server Description Mask providing information about the type or types of receive failure encountered if the Receive Failures counter is not zero. This is a cumulative mask.
Page 337: System Buffer Unavailable
Displaying Information About the Access Server Field Description System Buffer Number of times a system buffer was not available in the access server for an incoming Unavailable frame. This counter should accumulate at a rate of less than two counts per day. It is normal to experience some errors when nodes are added to the Ethernet.
Page 338: Displaying Access Server Status
Displaying Information About the Access Server Field Illegal Messages Rcv’d Illegal Slots Rcv’d Illegal Multicasts Rcv’d Displaying Access Server Status The SHOW/LIST/MONITOR SERVER STATUS command displays the status of the access server. The information tells you how well the access server is working under the current load and also warns you of network trouble or of problems with ports on the access server.
Page 339 Displaying Information About the Access Server Queue Entries: Available Services: Local Services: Reachable Nodes: Active Circuits: Connected Nodes: Connected Sessions: % CPU Used: % Memory Used: Selftest Status: Normal Software Status: Normal Local> SHOW/LIST/MONITOR SERVER COUNTERS Display Fields The following table describes the fields and column headings in the access server status display: Field Description...
Page 340 Displaying Information About the Access Server Field Active Ports Active Users Queue Entries Available Services (LAT protocol only) Local Services (LAT protocol only) Reachable Nodes (LAT protocol only) Active Circuits Connected Nodes Connected Sessions % CPU Used % Memory Used Minutes to Shutdown Discarded Nodes 17-18 Managing the Access Server...
Page 341 Displaying Information About the Access Server Field Description The memory used for storing service and node information is shared with that used for handling multiple sessions and queued connection requests. If the access server receives information on a greater number of nodes than specified in the node limit access server characteristic, it discards that information and increments the Discarded Nodes counter.
Page 342 Displaying Information About the Access Server Field Load Address Dump Address Console User Boot Protocol Selftest Status 17-20 Managing the Access Server Description Ethernet address of the node or the gateway from which the access server was last loaded. Some access servers display all zeroes if a downline load occurs using BOOTP and TFTP.
Page 343 Displaying Information About the Access Server Field Description Selftest Status Each number represents a bit map in which a bit set (continued) indicates a problem with the port. Service:00000: This value is a hexadecimal representation of a bit map in which a bit set indicates which service or services contained a checksum error.
Page 344: Displaying Access Server Summary Information
Displaying Information About the Access Server Field Software Status Displaying Access Server Summary Information The LIST/SHOW/MONITOR SERVER SUMMARY command displays the access server groups you defined. The first line displays the access server software version number and base level, LAT software version number, ROM version number, and the time that the access server has been running since the last downline load, expressed as days hours:minutes:seconds.
Page 345 Displaying Information About the Access Server Example: SHOW SERVER SUMMARY Display The following example shows how to generate an access server summary display: Local> SHOW SERVER SUMMARY Network Access SW Vx.x for DSxxx Address: 08-00-2B-02-F2-BB Identification: Number 6 LAT Server Server Groups: 0,4,10-20 Local>...
Page 346: Checking Port Status And Counters
Checking Port Status and Counters Checking Port Status and Counters Introduction The LIST/MONITOR/SHOW PORT command displays information about one or more ports on the access server. You can obtain characteristics, counter, status, and summary displays for ports. Displaying Port Characteristics The LIST/MONITOR/SHOW PORT CHARACTERISTICS command displays the values of the characteristics of the selected ports.
Page 347: Displaying Port Counters
Example: SHOW PORT CHARACTERISTICS Display The following example shows how to generate a port characteristics display: Local> SHOW PORT 1 CHARACTERISTICS Port 1: Joe Smith Character Size: Flow Control: Parity: Stop Bits: Access: Backwards Switch: Break: Forwards Switch: Default Protocol: Preferred Service: Authorized Groups: (Current) Groups:...
Page 348 Checking Port Status and Counters Example: SHOW PORT COUNTERS Display The following example shows how to generate a port counters display: Local> SHOW PORT 1 COUNTERS Port 1: Seconds Since Zeroed: Framing Errors: Parity Errors: SHOW/MONITOR PORT COUNTERS Display Fields The following table describes the information in the port counters display: Field Port n...
Page 349: Displaying Port Status
Field Overrun Errors Local Accesses Remote Accesses Displaying Port Status The SHOW/MONITOR PORT STATUS command displays information about the operational condition of the selected port. Example: SHOW PORT STATUS Display The following example shows how to generate a port status display: Local>...
Page 350 Checking Port Status and Counters Field Access Status Current Node 17-28 Managing the Access Server Description Current setting of the ACCESS port characteristic. Access determines how a port can access a service node or how a port can be accessed by other interactive users and service nodes.
Page 351: Displaying Port Summary
Field Current Port Input or Output XOFFed Input or Output Signals Displaying Port Summary The LIST/MONITOR/SHOW PORT SUMMARY command displays one line of general information for each selected port. The port summary display is useful for obtaining information about how the ports are being used. This is the default display for the PORTS ALL entity specification.
Page 352: Show/List/Monitor Port Summary Display Fields
Checking Port Status and Counters SHOW/LIST/MONITOR PORT SUMMARY Display Fields The following table describes the information under the headings in the SHOW/LIST/ MONITOR PORT SUMMARY display: Heading Port Access Status Services Offered 17-30 Managing the Access Server Description Number n of the port. Current setting of the ACCESS port characteristic.
Page 353: Configuring And Managing 3270 Terminal Emulation
Configuring and Managing 3270 Terminal Overview Introduction This chapter explains how to configure and manage the 3270 Terminal Emulator (TN3270) software for the access server. This software enables ASCII terminals and PCs to access IBM applications. The TN3270 software enables an ASCII terminal to emulate an IBM 3278 Display Station Model 2.
Page 354: Supported Ascii Terminals
Supported ASCII Terminals Supported ASCII Terminals Definition TN3270 supports the following models of DIGITAL ASCII terminals: VT100 with Advanced Video Option VT102 VT220, VT240, and VT241 VT320, VT330, VT340, and VT341 VT420 In the remainder of this chapter, the term ASCII terminal refers to all the models listed above and any compatible terminal emulation package.
Page 355: Definition And Description Of A Keyboard Map
Definition and Description of a Keyboard Map 3278 Keyboards Because the IBM 3278 keyboard differs greatly from those on ASCII terminals, TN3270 provides keyboard maps. A keyboard map assigns the functions on the IBM 3270 keyboards to keys or key sequences on the ASCII terminals. For example, Ctrl/ Z on an ASCII keyboard by default maps to the IBM 3270 EXIT function when you use the VT100 keyboard map.
Page 356: Configuring Basic 3270 Terminal Emulation
Configuring Basic 3270 Terminal Emulation Configuring Basic 3270 Terminal Emulation Once the IBM system administrator has configured the IBM host with TCP/IP, you need to do the following: Set up the ASCII terminal. Indicate the model number of the IBM 3270 Information Display Station that a terminal emulates.
Page 357: Terminal Setup Parameters
Terminal Setup Parameters The following table provides information on terminal setup for the various DIGITAL terminal models: Terminal Model VT100 VT2xx, VT3xx, V4xx Indicating the 3270 Model Number To enable 3270 emulation on a port, you must specify the 3270 model number as follows: Local>...
Page 358: Ibm Host Communications
IBM Host Communications IBM Host Communications Introduction This section describes IBM host communications with a terminal attached to the access server. Connecting to an IBM Host After you complete the basic configuration of a port for 3270 emulation, you can use the CONNECT, OPEN, or TELNET commands to access an IBM host.
Page 359 The status line is restored when: You use the STATUS function. You send data to the host. The IBM application clears the screen. Status Line Messages The following table describes the messages that appear on the status line indicator: Message Description EXTEND You have pressed the EXT function.
Page 360: Status Line Indicator Display
IBM Host Communications Status Line Indicator Display The following figure shows the position of the status line indicator on the screen: 18-8 Configuring and Managing 3270 Terminal Emulation (TN3270)
Page 361: Displaying And Customizing Keyboard Maps
Displaying and Customizing Keyboard Maps Introduction Although the default TN3270 keyboard maps are sufficient for most users, some may want to customize keyboard maps for specific applications. This section describes the default keyboard maps and the options for displaying and customizing them. There are two ways to manage customization of keyboard maps: on a server-wide basis and a port-by-port basis.
Page 362: Defining New Server-Wide Terminal Types And Keyboard Maps
Displaying and Customizing Keyboard Maps Default Server-Wide Terminal Type and Keyboard Maps The following table shows the default keyboard map and the associated terminal type: Predefined Terminal Type ANSI VT100 VT220 VT320 VT420 These particular associations between terminal types and keyboard maps are fixed. You cannot reassign any of the five default terminal types to different keyboard maps.
Page 363: Customizing Server-Wide Keyboard Maps
Local> CHANGE TN3270 TERMINAL PC_100_DCA KEYMAP NEW_KEYS You can carry out a similar process for terminal devices that use the VT220 keyboard map—the other default map. Local> CHANGE TN3270 TERMINAL PC_220_DCA KEYMAP VT220 Local> CHANGE TN3270 TERMINAL PC_220_DCA KEYMAP NEW_KEYS2 Customizing Server-Wide Keyboard Maps After executing the CHANGE commands as shown in the Defining New Server-Wide Terminal Types and Keyboard Maps section in this chapter, you can customize the...
Page 364 Displaying and Customizing Keyboard Maps Selecting a Server-Wide Terminal Type and Keyboard Map for a Port A port user who wants to establish a TN3270 session using a server-wide keyboard map can do the following: Step Action Check to see what terminal types (and associated keyboard maps) are available with the following command: Local>...
Page 365: Selecting And Customizing Keyboard Maps For A Port
Selecting and Customizing Keyboard Maps for a Port Server-wide keymapping is the recommended method for customizing users’ TN3270 keymapping assignments. It uses access server memory efficiently and provides a common customized environment across all TN3270 ports. Port-by-port keymapping is also possible, but uses additional access server resources. A user can set up unique keymapping assignments for use only on his or her port.
Page 366: Customizing A Default Keyboard Map For A Port
Displaying and Customizing Keyboard Maps You can list the defaults with this command: Local> SHOW TN3270 KEYMAP "KEYMAPNAME" The defaults are shown in the Default Server-Wide Terminal Type and Keyboard Maps and the Keyboard Map and Terminal Type. You can display the keyboard mappings associated with a default keyboard map (VT220 in this example, for a VT420 port device) with this command: Local>...
Page 367 Displaying and Customizing Keyboard Maps Example: SHOW PORT TN3270 KEYMAP Command The following example shows a partial display of a keymap: Local> SHOW PORT 2 TN3270 KEYMAP Port 1: john 3270 function ASCII Keystroke mnemonic CLEAR Configuring and Managing 3270 Terminal Emulation (TN3270) 18-15 description “Alt F2”...
Page 368: Ascii-To-Ebcdic And Ebcdic-To-Ascii Translation Tables
ASCII-to-EBCDIC and EBCDIC-to-ASCII Translation Tables ASCII-to-EBCDIC and EBCDIC-to-ASCII Translation Tables Commands The following table lists and describes the commands that enable you to display and modify the ASCII-to-EBCDIC and EBCDIC-to-ASCII translation tables. These tables use ASCII codes 0 to 255. When you display or change a given translation, you must enter the codes in hexadecimal format.
Page 369: Guidelines For Managing The Use Of Nvram For Tn3270
Guidelines for Managing the Use of NVRAM for TN3270 Introduction There is a pool of approximately 2.5 KB of shared NVRAM for the customization of the following TN3270 characteristics: Keyboard maps for the ports ASCII-to-EBCDIC and EBCDIC-to-ASCII translation tables This section provides guidelines on managing the available memory pool. Storage Requirements for TN3270 Definitions in NVRAM The following table lists the TN3270 storage requirements for TN3270 definitions in NVRAM:...
Page 370: Limiting Nvram Usage
Guidelines for Managing the Use of NVRAM for TN3270 Limiting NVRAM Usage To limit the number of NVRAM keyboard maps that the port user can customize, use the command shown in the following example: Local> DEFINE PORT TN3270 NVRAM LIMIT 5 The default limit is 0.
Page 371: Commands To Manage Tn3270 Terminal Emulation
Commands to Manage TN3270 Terminal Emulation Introduction This section summarizes the commands to manage 3270 emulation. Reference For a complete description of these commands and the correct syntax, refer to the Network Access Server Command Reference. TN3270 Access Server Characteristics The following table summarizes the TN3270 commands that configure access server characteristics: Command...
Page 372: Tn3270 Port Characteristics
Commands to Manage TN3270 Terminal Emulation TN3270 Port Characteristics The following table provides information on port characteristics and their defaults: SET/DEFINE/ CHANGE PORT TN3270 MODEL TERMINAL KEYMAP KEYMAP NVRAM LIMIT NULLS FLOW CONTROL SWITCH CHARACTER Verification 18-20 Configuring and Managing 3270 Terminal Emulation (TN3270) Description Default Specifies the model of IBM...
Page 373: Show Commands
SHOW Commands The following table provides information on the SHOW Commands for port characteristics: SHOW PORT TN3270 KEYMAP PORT TN3270 CHARACTERISTICS TN3270 ATOE TN3270 ETOA TN3270 TERMINAL TN3270 KEYMAP PORT SESSION TN3270 KEYMAP PORT SESSION CHARACTERISTICS PORT SESSION STATUS Configuring and Managing 3270 Terminal Emulation (TN3270) 18-21 Commands to Manage TN3270 Terminal Emulation Displays The TN3270 keyboard map for a specified...
Page 375: Configuring And Managing Point-To-Point Protocol (Ppp) Ports
Configuring and Managing Point-to-Point Overview Introduction This chapter explains how to configure and manage access server ports for use with PCs and computers acting as Point-to-Point Protocol (PPP) hosts. A PPP host uses PPP as its data link over low-speed asynchronous serial lines. Prerequisites Before you use the procedures in this chapter, you must: Ensure that the devices support PPP.
Page 376: Enabling Ppp On An Access Server Port
Enabling PPP on an Access Server Port Enabling PPP on an Access Server Port Introduction To check if PPP is enabled on a given port, use the SHOW PORT command. When enabled, the keyword PPP displays in the list of enabled characteristics at the bottom of the screen.
Page 377: Enabling Dedicated Ppp Traffic
Enabling Dedicated PPP Traffic The following example shows a series of commands used to dedicate a port to PPP. Local> DEFINE PORT 5 ACCESS LOCAL AUTOBAUD DISABLED Local> DEFINE PORT 5 AUTOCONNECT ENABLED BREAK DISABLED DEDICATED Local> DEFINE PORT 5 DEFAULT PROTOCOL PPP DSRLOGOUT ENABLED Local>...
Page 378: Establishing And Ending A Ppp Session
Establishing and Ending a PPP Session Establishing and Ending a PPP Session Using the CONNECT PPP Command If PPP is configured, you can start a PPP session on a port by entering the following secure command: Local> CONNECT PPP You can stop a PPP session by: Logging out of the port Generating a BREAK to the access server if the login is interactive, followed by the DISCONNECT command causing the peer to negotiate an end to the link...
Page 379: Displaying Ppp Characteristics
Displaying PPP Characteristics Introduction This section describes the commands used to display characteristics for LCP, IPCP, and ATCP. Displaying LCP Characteristics Use the SHOW PORT n PPP LCP CHARACTERISTICS command to display LCP characteristics for a port. This command is nonprivileged. The fields shown in the LCP display show the latest values configured by the SET PORT n PPP LCP characteristic commands.
Page 380 Displaying PPP Characteristics Fields in the LCP Characteristics Display The following table explains the fields in the LCP characteristics display. Field Passive Open Restart Timer Max Configure Max Terminate Max Failure Character Map Authentication Link Quality* 19-6 Configuring and Managing Point-to-Point Protocol (PPP) Ports Description Values Indicates if LCP is...
Page 381: Displaying Ipcp Characteristics
Field Magic Number* PF Compress ACF Compress FCS Size* Callback** Note: *This field has a fixed value in this software release. Note: ** If you enable PPP call-back negotiation on a port, it is strongly recommended you also enable some sort of authentication (PAP, CHAP, etc.) on the port.
Page 382 Displaying PPP Characteristics Example: IPCP Characteristics Display The following example shows a sample IPCP characteristics display. Local> SHOW PORT 5 PPP IPCP CHARACTERISTICS IPCP Characteristics: IPCP: Passive Open: Restart Timer: Max Configure: Max Terminate: Max Failure: IPCP Options: Negotiate Address: Remote IP Address: Compress Header: Compress States:...
Page 383 Field Description Max Terminate The number of times that LCP sends a terminate- request packet to the peer without receiving an acknowledgment. Max Failure The number of times that IPCP sends a negative acknowledgment for the peer’s proposed options before deciding to reject the options.
Page 384: Atcp Characteristics
Displaying PPP Characteristics ATCP Characteristics The SHOW/LIST/MONITOR PPP ATCP CHARACTERISTICS command displays the ATCP configuration for a given port. The fields in the display show the latest values configured by the SET PORT n PPP ATCP characteristic commands. Use the SHOW/MONITOR PORT n PPP ATCP STATUS command to see the values actually used on the link.
Page 385 Field Description Max Terminate The number of times that ATCP sends a terminate-request packet to the peer without receiving an acknowledgment. Max Failure The number of times that ATCP sends a negative acknowledgment for the peer’s proposed options before deciding to reject the options. This field has a fixed value in this software release.
Page 386: Displaying Ppp Status
Displaying PPP Status Displaying PPP Status Introduction This section describes how to display the PPP LCP and IPCP status. Displaying LCP Status Use the SHOW PORT n LCP STATUS command to display LCP characteristics. This command is nonprivileged. This command shows the actual state of the LCP implementation on the access server.
Page 387 Fields in the LCP Status Display The following table describes the fields in the LCP status display: Field Description State The LCP state as defined in RFC 1331. Negotiation Time The number of seconds required by the PPP negotiation procedure the last time LCP renegotiated. Since Open The number of seconds since LCP last attempted to negotiate the link.
Page 388: Displaying Ipcp Status
Displaying PPP Status Displaying IPCP Status Use the SHOW PORT n PPP IPCP STATUS command to display IPCP status. This command shows the actual state of the IPCP implementation in the access server. Because of the nature of PPP negotiations, this display can differ from the configured characteristics shown on the SHOW PORT n PPP IPCP CHARACTERISTICS display.
Page 389 Fields in the IPCP Status Display The following table explains the fields in the IPCP status display: Field Description State The IPCP state as defined in RFC 1331. The possible states are Initial, Starting, Closed, Stopped, Closing, Stopping, Req Sent, Ack-Rcvd, Ack-Sent, Opened, and DHCP Req. DHCP Req (which is not part of RFC 1331) indicates the negotiations are waiting for DHCP to assign an IP address.
Page 390: Displaying Atcp Status
Displaying PPP Status Displaying ATCP Status Use the SHOW PORT n PPP ATCP STATUS command to display ATCP status. The This command shows the actual state of the ATCP implementation in the access server. Because of the nature of PPP negotiations, this display can differ from the configured characteristics shown on the SHOW PORT n PPP ATCP CHARACTERISTICS display.
Page 391 Fields in the ATCP Status Display The following table explains the fields in the ATCP status display: Field Description State The ATCP state as defined in RFC 1331. The possible states are Initial, Starting, Closed, Stopped, Closing, Stopping, Req Sent, Ack-Rcvd, Ack-Sent, and Opened. Negotiation Time The number of seconds required by the PPP negotiation procedure the last time ATCP negotiated.
Page 392: Displaying Ppp Counters
Displaying PPP Counters Displaying PPP Counters Introduction The section describes PPP counters. Displaying LCP Counters Use the SHOW PORT n LCP COUNTERS command to display LCP counters for a port. The display shows all the counters relevant to LCP protocol operation. Most of this information is useful as a diagnostic aid.
Page 393 Fields in the LCP Counters Display The following table describes the fields in the LCP counters display: Field Description Negotiation The number of times that LCP successfully entered a round Successes of negotiations since the link was brought up. Ordinarily, this counter is 1.
Page 394: Displaying Ipcp Counters
Displaying PPP Counters Field Code Rejects out Echo Reqs in Echo Reqs out Echo Resps in Echo Resps out Prot Rejects in Prot Rejects out Discards in Discards out Displaying IPCP Counters Use the SHOW PORT n IPCP command to display the IPCP counters for a port. This command requires no privileges.
Page 395 Example: Command to Display the IPCP Counters The following example shows how to display the IPCP counters for port 5: Local> SHOW PORT 5 IPCP COUNTERS Port 5: Server: IPCP Counters: Negotiation Successes: Negotiation Failures: Configures in: Acks in: Naks in: Rejects in: Terminates in: Term Acks in:...
Page 396: Displaying Atcp Counters
Displaying PPP Counters Field Naks in Naks out Rejects in Reject outs Terminates in Terminates out Term Acks in Term Acks out Displaying ATCP Counters Use the SHOW PORT n ATCP Counters command to display ATCP counters for a port. This command requires no privileges. The counters display shows all the counters relevant to ATCP protocol operation.
Page 397 Example: Command to Display the ATCP Counters The following example shows how to display the ATCP counters: Local> SHOW PORT 5 ATCP COUNTERS Port 5: Server: ATCP Counters: Negotiation Successes: Negotiation Failures: Configures in: Acks in: Naks in: Rejects in: Terminates in: Term Acks in: Fields in the ATCP Counters Display...
Page 398 Displaying PPP Counters Field Naks in Naks out Rejects in Reject outs Terminates in Terminates out Term Acks in Term Acks out 19-24 Configuring and Managing Point-to-Point Protocol (PPP) Ports Description The number of ATCP configure-naks received from the peer. The number of ATCP configure-naks sent to the peer from the access server.
Page 399: Managing Ipx
Overview Introduction This chapter describes how to configure and manage IPX on an access server. In This Chapter This chapter contains the following topics: IPX Description Getting Started Hardware and Software Requirements Setting Up Your PC Setting Up the Network Access Server Summary of DECserver IPX Management Commands Modem Considerations Novell Client/Server Operation...
Page 400: Ipx Description
IPX Description IPX Description Introduction The purpose of IPX is to allow Novell NetWare clients to dial in to (or directly attach to) the network access server via asynchronous lines. Each remotely connected Novell client looks and acts as if it was directly connected to the LAN. The network access software provides PPP/IPXCP as the underlying data link on the asynchronous lines.
Page 401 Login Procedures One or more serial ports of the access server can be configured for Novell dial-up access. Depending on your requirements, different login procedures for IPX can be configured including: The remote PC user can choose to activate a connection to the Novell network after login to the access server local user interface.
Page 402: Getting Started
Getting Started Getting Started Checklist The following is a checklist for using this chapter to perform the basic steps to perform remote node access to a Novell network through a network access server: Step Action Determine your hardware/software requirements (Hardware and Software Requirements).
Page 403: Hardware Requirements
Hardware and Software Requirements Introduction This section describes the hardware and software necessary to run IPX. There must be at least one NetWare fileserver version 3.xx or greater on the network. If a fileserver is not directly attached to the same LAN as the network access server, there must be a NetWare router on the LAN.
Page 404: Setting Up Your Pc
Setting Up Your PC Setting Up Your PC PC Remote Access Software Ensure you know whether the network access server port you are dialing in to requires you to enter a login password or logs directly in to the local user interface. If this is the case, you will need to use terminal emulation to communicate with the access server following modem connection.
Page 405: Setting Up The Network Access Server
Setting Up the Network Access Server Enabling IPX By default, IPX is not enabled on the access server. A privileged user must enable IPX with the following commands: Local> CHANGE IPX INTERNAL ipx-net Local> CHANGE IPX ENABLED Note The ipx-net value must be a unique Novell network number on the network. Configuring the Port for an Attached Device To configure a port for PCs dialing in through a modem or directly connected to the network access server, use the following commands:...
Page 406: Configuring The Port For The Login Method
Setting Up the Network Access Server can be configured either CTS (CTS-DSR-RTS-DTR) or RI (RI-DCD-DSRS- DTR). Based on configuration, correct adapter must be chosen (see Appendix A). Current high-speed modems (>9600 baud) typically use CTS. Configuring the Port for the Login Method You can configure a port to log in to a local user interface prompt or to be exclusively dedicated to PPP.
Page 407: Configuring The Port Dedicated To Ppp
Configuring the Port Dedicated to PPP Following modem connection, the PC user will log in with or without password authentication. Then, PPP will automatically be activated to pass IPX network packets. Configuring the Port With Login Password Authentication Required To configure a port with login password authentication required, use the following commands: Local>...
Page 408 Setting Up the Network Access Server Disabling PPP/PAP Password Authentication To disable the optional PPP/PAP password authentication, use the following command: Local> CHANGE PORT n LCP AUTHENTICATION DISABLE Passwords Both login password authentication and PPP/PAP password authentication use the same password. One or both can be enabled at the same time. For PAP, verification of the password is case sensitive.
Page 409: Summary Of Decserver Ipx Management Commands
Summary of DECserver IPX Management Commands The following are the network access server commands you can use to manage IPX. Port PPP IPX Commands for LCP The following table explains the PORT PPP IPX commands for LCP. SHOW/LIST/MONITOR PORT n LCP CHARACTERISTICS SHOW/MONITOR PORT n COUNTERS...
Page 410: Port Ppp Ipx Commands For Ipxcp
Summary of DECserver IPX Management Commands RESTART Port PPP IPX Commands for IPXCP The following table explains the PORT PPP IPX commands for IPXCP: SHOW/LIST/MONITOR Port n IPXCP CHARACTERISTICS SHOW/MONITOR PORT n IPXCP STATUS COUNTERS CHANGE/SET/DEFINE PORT n IPXCP ENABLE DISABLE MAXCONFIGURE MAXFAILURE...
Page 411: Server Ipx Commands
SHOW/MONITOR PORT n STATUS Server IPX Commands The following table defines the server IPX commands: SHOW/LIST/MONITOR IPX CHARACTERISTICS SHOW/MONITOR IPX COUNTERS ROUTES STATUS CLEAR IPX ZERO IPX COUNTERS PORT n PPP COUNTERS CHANGE/SET/DEFINE IPX ENABLE DISABLE CHANGE/SET/DEFINE IPX FRAME ETHERNET RAW802 Summary of DECserver IPX Management Commands Description...
Page 412 Summary of DECserver IPX Management Commands SAP802 SNAP802 CHANGE/SET/DEFINE IPX FRAME frametype NETWORK ipx-net LEARN DISABLED CHANGE/SET/DEFINE IPX INTERNAL NETWORK ipx-net NONE 20-14 Managing IPX IEEE 802.2 standard. IEEE 802.2 with SNAP SAP format. Description Specify explicit internal network number. Learn internal network number from LAN.
Page 413: Modem Considerations
Modem Considerations Dial-In Modems Keep the following in mind when using dial-in modems attached to the network access server: Flow control for the dial-in modem and the access server port must match. CTS is recommended for DECserver 700 and DECserver 900TM. XON/XOFF is recommended for DECserver 90M and DECserver 90TL.
Page 414 Modem Considerations Recommended Serial Port Baud Rate The following table lists guidelines for setting the serial port baud rate: UART Type 8250 16450 16450-A 16550 20-16 Managing IPX Maximum Modem Maximum Recommended Speed Serial Port Baud Rate 9600 Up to 9600 9600 to 14400 9600 to 19200 9600 to 14400...
Page 415: Novell Client/Server Operation
Novell Client/Server Operation Establishing Remote Node Access Connection to Novell Network Vendors of PC remote node access software for Novell may have different procedures for dialing in and establishing a remote access connection to a Novell LAN through the access server. However, the following are generally the expected steps: Step Action Dial in to the network access server.
Page 416 Novell Client/Server Operation Use DOS batch files with all the commands necessary to load and activate the remote node access software and Novell software for establishing an IPX connection. Refer to the remote node access software installation guide for additional information. Use local Novell login scripts to facilitate logging in to a Novell fileserver.
Page 417: Verifying Configuration
Operational Checkout and Diagnosis Verifying Configuration To verify proper configuration, at a access server management port, type SHOW IPX at the local user interface prompt: At least one LAN frame should have a corresponding network number. IPX should be enabled and the internal network should be defined with a unique network number.
Page 418: Disabling Ipx
Disabling IPX Disabling IPX Using the DEFINE Command If you decide you no longer need IPX support, you can disable IPX by using the following privileged command: Local> DEFINE IPX DISABLED Reinitialize the access server to have this command take effect. 20-20 Managing IPX...
Page 419: Frame Types
Frame Types Introduction To support a broad base of network stations, the access server supports four different frame formats for encapsulating IPX packets on the LAN. The four frame types supported by the access server can be enabled simultaneously: Ethernet RAW802 SAP802 SNAP802...
Page 420: Displaying Ipx Characteristics
Displaying IPX Characteristics Displaying IPX Characteristics Using the SHOW command Use the SHOW IPX CHARACTERISTICS command to display IPX characteristics, including IPX network and node numbers. The command is nonprivileged. IPX Characteristics Display The following example shows the command to display IPX characteristics on an access server: Local>...
Page 421 Field Description Internal Network None or up to 8 hexadecimal numbers (no leading zeroes, 1 to FFFFFFFE). This entry configures the IPX internal network number for the access server. It is used by the serial ports for configuring a common network number for all PC client dial-ins when PPP/IPXCP is negotiated.
Page 422: Displaying Ipx Status
Displaying IPX Status Displaying IPX Status Using the SHOW IPX Command Use the SHOW IPX command to display IPX status. The command is nonprivileged. IPX Status Display The following example shows the command to display IPX status on an access server: Local>...
Page 423: Displaying Ipx Counters
Displaying IPX Counters Use the SHOW IPX COUNTERS command Use the SHOW IPX COUNTERS command to display the IPX counters. The command is nonprivileged. IPX Counters Display The following example shows the command to display IPX counters on an access server: Local>...
Page 424 Displaying IPX Counters Field IPX Total Packets Received IPX Local Transmits IPX Local Receives IPX Unknown Sockets IPX Receive Discards IPX Transmit Discards IPX Hop Count Errors FORWARD CACHE Packets Received FORWARD CACHE Receive Discards FORWARD CACHE Overruns FORWARD CACHE Packets Transmitted FORWARD CACHE Transmit Discards...
Page 425 Field Description RIP/SAP Requests Received Number of RIP/SAP request packets received. RIP/SAP Requests Discarded Number of RIP/SAP request packets discarded. RIP/SAP Request Resource Number of RIP/SAP request packet resource Errors errors. RIP/SAP Responses Number of RIP/SAP response packets Transmitted transmitted. RIP/SAP Responses Received Number of RIP/SAP response packets received.
Page 426: Ipx Routes Display Fields
Displaying IPX Routes Displaying IPX Routes Using the SHOW IPX ROUTES Command Use the SHOW IPX ROUTES command to display IPX Routes. This command is nonprivileged. IPX Routes Display The following example shows the command to display IPX routes: Local> SHOW IPX ROUTES IPX Routes Destination 2B24F2DD.020000000001...
Page 427: Resetting Counters
Resetting Counters Using the ZERO Command Use the ZERO command to reset IPX counters. ZERO Command Options The following table contains the options that you can use on the command line to reset specific counters or sets of counters: Option PORT port-list PPP Resetting Counters Description...
Page 429: Managing Dial Services
Overview Introduction Configuring dial services is similar in concept to configuring a LAT service or Telnet listener. You define a service with a specified configuration that dictates how the user can operate the dialer. Before you begin any dialer management, be sure to: Install the latest software image on the access server and all load hosts.
Page 430: Dial Services Command Groups
Dial Services Command Groups Dial Services Command Groups Command Groups To configure and manage the dial services, use the SET/DEFINE/CHANGE DIALER and SHOW/LIST/MONITOR DIALER command groups. Reference For more detailed information about commands used in this chapter, refer to the Network Access Server Command Reference.
Page 431: Checking The Current Server Settings
Checking the Current Server Settings Introduction Before you configure dialer services, determine the current server configuration. Use the SHOW SERVER command to display the server configuration. Server Configuration Display The following example shows a typical access server configuration display: Local> SHOW SERVER Network Access SW Vx.x for DSxxx-xx BLxx-xx ROM Vx.x-x Address: 08-00-2B-26-AA-99...
Page 432: Defining A Dialer Script
Defining a Dialer Script Defining a Dialer Script Introduction The first step in configuring a dial service is creating a dialer script. A dialer script tells the access server what text strings to use to control a modem on a specific port. These text strings are also known as “modem strings.”...
Page 433 Defining a Dialer Script Example: Set Dialer Script Name The following example illustrates how to modify dialer script strings in a dialer script called “dickens” in order to set unique dialer characteristics: Local > DEFINE DIALER SCRIPT dickens COMMAND "AT" Local >...
Page 434: Assigning The Dialer Script To A Port
Assigning the Dialer Script to a Port Assigning the Dialer Script to a Port Steps After configuring the dialer strings in a dialer script, assign the script to a specific port. Do the following: Step Action Are you defining the dialer script to the port for the first time? •...
Page 435: Assigning A Dialer Script To A Port
Example: The Show Port Command Display The following example shows the resulting display for the SHOW PORT command. In this example, the preferred dialer service is CALL_HOME and the dialer script name is Generic_14400. Local> SHOW PORT 2 Port Character Size: Flow Control: Parity: Stop Bits:...
Page 436: Verifying Dialer Script Configuration
Assigning the Dialer Script to a Port Verifying Dialer Script Configuration Use the SHOW PORT n command to verify any changes you make to dialer script assignments for a port. The change appears in the Dialer Script field of the display. Example: Show New Port Configuration The following example shows the display after using the CHANGE PORT n DIALER SCRIPT command to change the dialer script from...
Page 437: Defining The Dialer Service
Defining the Dialer Service Steps After you define the dialer script and assign the dialer script to a port, define the dialer service. A dial service is used to establish a dial-back session. Do the following: Step Action Display information (characteristics, status, and counters) about currently configured dialer services and system status.
Page 438: Showing Dialer Service Status
Defining the Dialer Service Example: Show Dialer, Port Security Enabled In this example, a user on a port with SECURITY enabled would not have access to the STATUS display since it might provide access to unlisted or sensitive phone numbers and other information received from the modem. Local>...
Page 439 Local> SHOW DIALER AT_TRADESHOW STATUS Dial Service: AT_TRADESHOW - Available Identification: Dial-back from tradeshow Port: User (remote) Available Raymond Local> SHOW DIALER STATUS Display Fields The following table lists values for the status field in the SHOW DIALER display: Status Meaning Initializing Sending dialer command and authorization strings.
Page 440: Displaying Dialer Counters
Defining the Dialer Service Displaying Dialer Counters Use the SHOW DIALER service-name COUNTERS command to display the counters for a dialer service. Example: Show Dialer Counters The following example shows the dialer service counters display for the dialer service AT_TRADESHOW: Local>...
Page 441 Dialer Service Characteristics The following table describes the dialer service characteristics: Characteristic Description IDENTIFICATION Allows an identifying string to be associated with a given service. CONNECTIONS Specifies whether a user may connect to the current dial service. PORTS One or more physical ports that are to offer this dial service.
Page 442 Defining the Dialer Service Characteristic USERNAME PASSWORD MODE MODE Command Variables The following table explains the MODE command variables: Variable LOCAL LOGIN SLIP 21-14 Managing Dial Services Description Comments Defines the user name Maximum length = 1 to 16 to be supplied to a peer characters that requires the access server to be...
Page 443: Configuring Interactive Dial Requests
Configuring Interactive Dial Requests Configuring for Interactive Dial-Back The following example sets the access server to a predefined phone number: Local> CHANGE DIALER AT_HOME PORT 1-16 IDENT "DIALS YOU AT HOME" The dialer service AT_HOME is set up to allow any phone number to be dialed, but the user’s security profile allows for a connection to be made using only one number.
Page 444: Framed Dial Requests
Framed Dial Requests Framed Dial Requests Introduction Dial-back requests can also be queued from a client that connects to the server using PPP. Unlike PPP, the SLIP protocol does not include a method of negotiating connection options including whether a call-back should be attempted and the phone number to which the call-back should be placed.
Page 445 If you enable PPP call-back negotiation on a port, DIGITAL strongly recommends that you also enable some sort of authentication (for example PAP or CHAP) on the port. Without authentication, any user who happens to discover the phone number for that port’s modem could potentially request a call-back and run up unlimited phone charges.
Page 447: Managing Access Server Security
Managing Access Server Security Overview Introduction The DECserver Network Access Software (DNAS) supports the following authentication services: RADIUS SecurID Local User Accounts Kerberos V4 In This Chapter This chapter contains the following topics: Security Type Descriptions Common Terminology Across Security Realms Managing Kerberos Managing RADIUS Managing SecurID...
Page 448: Security Type Descriptions
Security Type Descriptions Security Type Descriptions Introduction This section describes the types of security that the access server supports. Kerberos Kerberos is a user authentication system designed for open network computing environments. It provides for the authentication of a user name and password pair, by means of a host system accessible over the network.
Page 449: User Accounts
The following occurs: Stage Description The access server uses the realm name to determine the security method to use when authenticating the login. If the realm name is for a RADIUS server, the access server sends the login information to a RADIUS authentication host. Upon completing authentication successfully, the RADIUS authentication host sends a list of authorization parameters to the access server after authentication completes successfully.
Page 450: Common Terminology Across Security Realms
Common Terminology Across Security Realms Common Terminology Across Security Realms Introduction This section briefly defines the terms that are common to all of the security methods that the access server supports. Accounting Host A security server that accepts and records accounting information from the access server.
Page 451: Security Server
Security Server The remote host with which the access server communicates in order to request authentication clearance during the login process. Each security method (other than user accounts) defines one or more host processors that can support the authentication procedure. RADIUS Accounting The RADIUS security method supports logging of accounting information.
Page 452: Managing Kerberos
Managing Kerberos Managing Kerberos Introduction This section describes Kerberos security features and explains how to configure and manage these features on the access server. To use the procedures in this section, you must: Ensure that the access server can communicate with a host running Kerberos V4 software.
Page 453: Configuration Of User Authentication
Network Access Server Requirements Before configuring security-specific parameters, make sure that: You have entered the correct Internet address and subnet mask. (See the Configuring the Internet Address and Subnet Mask section in Chapter 7.) There is an Internet gateway to the KDC if the KDC is not on the access server subnet.
Page 454 Managing Kerberos Example: Definition of Kerberos Settings The following example shows a sample of the commands used to change these settings: Local> CHANGE KERBEROS DEFAULT REALM finance.acme.com SECRET Secret> (not echoed) Verification> Local> CHANGE KERBEROS REALM finance.acme.com MASTER HOST security.acme.com Local>...
Page 455 Displaying Kerberos Settings The following example shows a sample display of Kerberos settings: Local> show kerb characteristics Retransmit Interval: Ticket service port: Realm: mfg.acme.com Secret: (None) Authorization Defaults: Access: (None) Max Connect: (None) Dialback Number: 6111 Dialout Number: (None) Permissions: DIALBACK, DIALOUT, LAT, TELNET, SLIP, PPP, NOPRIV Port Configuration You need to configure user authentication on the access server on a port-by-port basis.
Page 456: User Authentication Procedure
Managing Kerberos User Authentication Procedure When the system administrator configures Kerberos security features for a given access server port, you need to enter a valid user name and password when you log on to the access server. A complete Kerberos principal name has the following format: user-name[.instance]@realm-name To abort the authentication process, press the Break key or the Local Switch key.
Page 457: Changing A User Name And Password
Changing a User Name and Password Once the network manager has set up the access server, users can change their own passwords on the master KDC for their realm. Example: Sample Kerberos User Authentication Session The following example shows a sample session for changing a password. The way that message 468 wraps may appear differently on your terminal screen.
Page 458 Managing Kerberos Port User Authentication Counters The following example shows how to display the authentication counters for a given port: Local> SHOW PORT 1 AUTHENTICATION COUNTERS Port 1: j_smith Cur. login attempts: User authentication: Time since last user authentication success: Time since last user authentication failure: Time since counters last zeroed: Setting the User Authentication Counters to Zero...
Page 459: Managing Radius
Managing RADIUS Introduction A RADIUS server must be operational on the network. The RADIUS server can include accounting capability, but the RADIUS accounting can be in a separate server, on a different node. In addition, there can be multiple RADIUS servers on the network, and RADIUS provides a method for using a second server should the attempt with the first server result in no response.
Page 460: Optional Setup For Radius
Managing RADIUS Optional Setup for RADIUS You can use the commands in the following examples to configure additional security parameters for RADIUS servers. The commands in these examples define a RADIUS server accounting node, the maximum timeout period for RADIUS server reply, and the interval between retries of an authentication request.
Page 461: Radius User Authorizations
Example: Defining Realm Default Authorization Attributes LOCAL> CHANGE RADIUS REALM JONAS.COM PERMISSIONS (DIALBACK) LOCAL> CHANGE RADIUS REALM JONAS.COM CALLBACK ENABLED DIALBACK NUMBER "1-800-555-1111" Example: Defining Password Authentication Type LOCAL> CHANGE RADIUS REALM JONAS.COM ACCESS FRAMED Note The value NONE should be read as unspecified. This allows the port configuration to determine the access whenever the RADIUS server’s user entry does not specify one or more authorization attribute.
Page 462: User Access To The Access Server
Managing RADIUS User Access to the Access Server The primary way to define a user’s type of access is to use the RADIUS server attribute called “User-Service-Type”. The following table shows User-Service-Type values that the access server supports: Value Login Framed Callback-Login Callback-Framed...
Page 463: Additional Radius Attributes
Additional RADIUS Attributes The tables in this section contain lists of additional RADIUS attributes that the access server supports. General Session Attributes The following table defines the general session RADIUS attributes: General Session Attributes Service-Type Session-Timeout Idle-Timeout Definition Type of link requested, or change in type of link. Used in both Access-Request and Access-Accept packets.
Page 464 Managing RADIUS Framed Session Attributes The following table defines the framed session attributes: Framed Session Attributes Framed-Protocol Framed-IP-Address Callback-Number 22-18 Managing Access Server Security Definition Type of framed protocol used for session. Used in Access-Accept packets. Values: • PPP • SLIP IP address to be configured for the user (in lieu of DHCP, or similar).
Page 465 Interactive Session Attributes The following table defines the interactive session attributes: Interactive session attributes Login-IP-Host Login-Service Login-Port Login-LAT-Service Login-LAT-Node Login-LAT-Groups Managing RADIUS Definition The IP address of the host system with which the user is to be automatically connected. Used in Access-Accept packets. The type of service to which the user is to be automatically connected.
Page 466 Managing RADIUS RADIUS General Non-Session Attributes The following table defines the RADIUS general non-session attributes: RADIUS Overhead Attributes NAS-IP-Address NAS-Port Reply-Message State Class Vendor-Specific DIGITAL Vendor-Specific Attributes The following table defines the DIGITAL vendor-specific attributes: DIGITAL Vendor-Specific Attributes Service Permissions (1) 22-20 Managing Access Server Security Definition IP address of the NAS.
Page 467 DIGITAL Vendor-Specific Attributes Dialout Number (2) Dialback Number (3) Dialout Service (4) RADIUS Accounting Attributes The following table defines the RADIUS accounting attributes: RADIUS Accounting Attributes Acct-Status-Type Acct-Delay-Time Acct-Input-Octets Acct-Output-Octets Acct-Session-Id Managing RADIUS V-Type — 2 for dialout number. V-Length >= 3 String —...
Page 468: Optional Radius User Attributes
Managing RADIUS RADIUS Accounting Attributes Acct-Authentic Acct-Session-Time Optional RADIUS User Attributes The RADIUS attributes that the access server supports are as follows: Session-Timeout Idle-Timeout Framed-Protocol Framed-IP-Address Callback-Number Login-IP-Host Login-Service (Telnet, LAT) Note Other RADIUS attributes (particularly accounting attributes) are utilized internally between the RADIUS server or accounting server and the access server, which are independent of authorization attributes.
Page 469: Managing Securid
Managing SecurID Introduction The Security Dynamics ACE/Server software performs dynamic two-factor SecurID authentication. Dynamic two-factor authentication combines something the user knows—a memorized personal identification number (PIN)—with something the user possesses—a randomly generated access code that changes every 60 seconds. The second factor is the tokencode generated by the SecurID token.
Page 470: Minimal Setup For Securid
Managing SecurID SecurID Realms SecurID servers do not provide any authorization data; therefore, any authorization information comes from the SecurID realm or the port characteristics. If a SecurID card is in a new PIN mode and the new PIN is coming from the access server, the new pin is displayed for 10 seconds and then erased.
Page 471: Securid User Authorizations
Example: Including the Realm Name If your realm name has to be included when the access server sends messages to SecurID, issue the command shown in the following example: LOCAL> CHANGE SECURID REALM realm-name INCLUDE For most usage, you will not want to include the realm name. If you do, each entry in the SecurID users file will have to appear as “user-name@realm-name”...
Page 472: Setting User Permissions
Managing SecurID Setting User Permissions Permissions are explicitly given by the value in the realm defaults. When these are still missing, the port configuration can supply its specified values (for attributes having a corresponding representation in the port). Permissions are DIGITAL vendor-specific. The following is a list of SecurID permissions: DIALOUT TELNET...
Page 473: Managing Local Access Server Security
Managing Local Access Server Security Introduction The tasks described in this section cover the configuration of the local access server realm and setup of local user accounts. Configuration of server security involves: Access server realm configuration Local user account configuration parameter Defining the Realm Realm names must be unique within a given type of authentication.
Page 474: Determining Security Configuration
Determining Security Configuration Determining Security Configuration Displaying RADIUS, SECURID, and KERBEROS Characteristics The SHOW {RADIUS | SECURID | KERBEROS} CHARACTERISTICS command displays all configured realm names, along with any pertinent configuration parameters. This command is privileged. It shows the various RADIUS and SecurID servers that are configured for the access server as well as the Kerberos KDCs.
Page 475 Example: Showing SecurID The following example shows the resulting display for the SHOW SECURID CHARACTERISTICS command: LOCAL> SHOW SECURID Retransmit Interval: 00:00:02 Service Port: Realm: AAA.BBB.CCC.COM Realm Inclusion: EXCLUDE Prompt: Enter Passcode> Secret: (Entered) Primary Host: 16.20.55.66 Authorization Defaults: Access: INTERACTIVE Max Connect: 00 08:00:00...
Page 476: Displaying Security Summary
Determining Security Configuration Example: Displaying Kerberos Characteristics The following example shows the resulting display for the SHOW KERBEROS CHARACTERISTICS command: LOCAL> SHOW KERBEROS Retransmit Interval: Ticket service port: Default Realm: Secret: Primary Host: Master Host: Host: Authorization Defaults: Access: Max Connect: DialBack Number: DialOut Number: Permissions:...
Page 477: Showing The User Port Authorization Profile
Showing the Authentication Counters This access server can display the counters for all realms (local, RADIUS, KERBEROS). Any session authenticated by RADIUS attempts to send accounting data to the RADIUS Server. Sessions authenticated by other methods may be configured to send accounting packets to a RADIUS accounting server as well (if one exists).
Page 478: Managing Dial-Up Access Security With Autolink And Autolink Authentication
Managing Dial-Up Access Security with AUTOLINK and AUTOLINK Authentication Managing Dial-Up Access Security with AUTOLINK and AUTOLINK Authentication Introduction AUTOLINK lets PC clients log in using SLIP,PPP, and character cell terminal mode. AUTOLINK AUTHENTICATION provides a flexible and secure method for clients to authenticate when using AUTOLINK.
Page 479: Enabling Autolink Authentication
Managing Dial-Up Access Security with AUTOLINK and AUTOLINK Authentication Enabling AUTOLINK Authentication If you want authenticated logins, you must separately configure the port to require AUTOLINK AUTHENTICATION. The authentication can be by PPP PAP, PPP CHAP, or interactively by terminal emulation (which could be a script). The PC client is required to provide one authentication.
Page 480: Setting Autolink Timers
Managing Dial-Up Access Security with AUTOLINK and AUTOLINK Authentication Authentication CHAP USERNAME If you use either the PAP NOUSERNAME or CHAP NOUSERNAME options with the PORT LCP AUTHENTICATION command when you enable AUTOLINK authentication, the login fails. Note if you configure the default protocol and dedicated service for the port as AUTOLINK and you disable AUTOLINK authentication, SLIP and character-cell users may be connected without authentication.
Page 481: Timeouts
Managing Dial-Up Access Security with AUTOLINK and AUTOLINK Authentication Timeouts The following are the properties of AUTOLINK timeouts: A user has one minute to complete an interactive login successfully. The clock starts from the time the USERNAME> prompt is displayed. This includes the time for the user name/password request to be processed by the authentication server.
Page 482: Specifying Other Security Features
Specifying Other Security Features Specifying Other Security Features Introduction This section describes various security features on interactive ports. Specifying Dedicated Service for LAT or Telnet Resources The results of specifying a dedicated service on a port are as follows: The device on the port appears hard-wired to a specific resource. The access server establishes only one session for the port.
Page 483: Specifying Passwords
Specifying Other Security Features Telnet Requirement To set an Internet host as a dedicated service, the default protocol must be set to TELNET. You can use the host’s Internet address, domain name, or relative domain name if the host is defined in a name server; however, you cannot use the entire domain name if the name is more than 16 characters, including the dots.
Page 484: Specifying Password Limit
Specifying Other Security Features Login Password Definition Example The following example shows how to define TOTAL as the login password: Local> CHANGE SERVER LOGIN PASSWORD "TOTAL" Local> CHANGE SERVER LOGIN PASSWORD Password> TOTAL (not echoed) VERIFICATION> TOTAL (not echoed) Local> You must enable the PASSWORD characteristic at the port level.
Page 485 Specifying Other Security Features Example: Changing the Server Password Attempt Limit The following example shows how to change the password limit to 6: Local> CHANGE SERVER PASSWORD LIMIT 6 Managing Access Server Security 22-39...
Page 487: Accounting
Overview Introduction This chapter describes the network access server accounting component. The basis of an accounting facility is the logging of events related to user access. These events can be useful to support audit trails, billing, capacity planning, and connection trouble- shooting.
Page 488: Accounting Description
Accounting Description Accounting Description Introduction The configuration of the accounting feature is supported using SNMP and the user interface. The accounting log itself is also accessible by both mechanisms. There is also a facility for sending accounting events to the access server console port as they occur.
Page 489: Contents Of Log Entry Types
What Events Are Logged? Contents of Log Entry Types The following table shows the fields that are logged in each accounting log entry type: Event Time Port Entry Type Port Login Port Logout Session Connect Attempt Session Discon- nect Kerberos Pass- word Fail Privilege...
Page 490: Event Field Descriptions
What Events Are Logged? Event Time Port Entry Type Privilege Pass- word Modified Mainte- nance Pass- word Modified Login Pass- word Modified User Privilege Level Modified SNMP Commu- nity Mod- ified Remote Pass- word Modified Event Field Descriptions The following table describes the fields in the accounting log entries: Field Description Event...
Page 491 Field Description Port • For session connect/disconnect events: — Local Access: The port the session connect or disconnect occurred on. If the connection is initiated from a physical port, this field will have the physical port number. If the connection is initiated from an existing remote console connection, the port number will be one higher than the maximum physical port number.
Page 492 What Events Are Logged? Field Description Port • Session connect/disconnect: The protocol associated with the session attempt or disconnect. These values can be: — LAT — TELNET — MOP — TN3270 — SLIP — PPP — AUTOLINK — PING Note: For a TN3270 session, the protocol type may appear as TELNET for the connect event and TN3270 for the disconnect event.
Page 493 Field Description Peer The value of this field varies depending on the protocol field, as follows: • LAT — Local Access: For nondedicated/preferred case, whatever you type following the CONNECT [LAT] command. For example, C CLUSTER1 (peer is CLUSTER1); C CLUSTER1 NODE NODE1 (peer is CLUSTER1 NODE1).
Page 494 What Events Are Logged? Field Description • Session Disconnect Event: The number of bytes of successfully transmitted user data on this session at the time of session termination. This field will always be zero for MOP remote console connections. • Logout Event: The number of bytes output to the port during the life of the associated login.
Page 495: Logout Events
When Events Are Logged Introduction This section describes when each specific event type is logged. Login Events Login events are logged at the time of the successful login (just before the user gets the Local> prompt). Unsuccessful login attempts are handled by Kerberos Password Fail, Login Password Fail, or Remote Password Fail events.
Page 496: Password Modified Events
When Events Are Logged Password Modified Events Password modified events (Privilege, Maintenance, Login, Remote) are logged whenever the associated password is modified with a SET/DEFINE/CHANGE command. A single event is logged for each UI command (only one event is logged for a CHANGE command).
Page 497: Managing Accounting
Managing Accounting Introduction You can manage the accounting feature fully by using SNMP or the user interface. You can access the accounting log itself using both mechanisms. This section describes the user interface commands you can use to manage the accounting feature. Reference Refer to SNMP Survival Guide (located with the software) for instructions on managing the accounting component with SNMP.
Page 498: Changing The Accounting Threshold
Managing Accounting Changing the Accounting Threshold Use the ACCOUNTING THRESHOLD command to specify the point in the building of a log when the accounting component sends out a threshold notification.Valid values for the ACCOUNTING THRESHOLD variable are: NONE: No notification. HALF: Notify when each half of the log file is reached.
Page 499: Displaying Accounting Characteristics
Displaying Accounting Characteristics Use the SHOW ACCOUNTING CHARACTERISTICS command to display the current values of the accounting variables. Example: Displaying Accounting Characteristics The following example shows the display that appears when you use the SHOW ACCOUNTING CHARACTERISTICS command: Local> SHOW ACCOUNTING CHARACTERISTICS Accounting Characteristics: Threshold: Console Logging:...
Page 500: Displaying The Accounting Log
Managing Accounting Displaying the Accounting Log Use the SHOW ACCOUNTING LOG command to view the log. Example: Displaying the Accounting Log The following example shows a sample accounting log: Local> SHOW ACCOUNTING LOG Accounting Log: Event: Login Port: 3 Username: smith Event: Privilege Password Fail Port: 3 Username: smith...
Page 501: Using The Accounting Console Logging Feature
Using the Accounting Console Logging Feature Description When console logging is enabled, the accounting component displays the accounting events on the server console as they occur. This can be useful for viewing events on a console terminal or printer. It is also possible to view (and log to a file) the console events remotely.
Page 502 Using the Accounting Console Logging Feature Example: Telnet Remote View of the Accounting Log The following example shows the commands necessary to remotely view the accounting log via Telnet with a loopback connector on port 16: Local> CHANGE PORT 16 ACCESS REMOTE Local>...
Page 503: Cable And Adapter Hardware
Cable and Adapter Recommendations Cable and Adapter Hardware Cable and Adapter Table The following table lists the cable and adapter hardware you need to connect devices to specific DECserver models: To Connect This Device: Terminal/printer with MMJ port Terminal/printer with DB25 male port Terminal/printer with DB9 male port...
Page 504 To Connect This Device: PC communication interface with DB9 male port Modems using RI- DCD-DSRS-DTR signals (typically <9600 baud) with DB25 female port Modem using CTS- DSR-RTS-DTR signals (typically =>9600 baud) with DB25 female port Non-DIGITAL systems with DB25 male ports (reverse- LAT configuration) Note: The -xx denotes the length of the cable in meters.
Page 505 access server A generic name for a family of Digital Equipment Corporation access servers. access server configuration database that contains the DECnet characteristics and the access server load host database type, the load file name, and the dump file name for each access server. access server image A file in the access server directory on the Address Resolution Protocol...
Page 506 American Standard Code for Information Interchange ASCII AppleTalk An Apple Computer, Inc., trademark for their network protocol suite. ASCII American Standard Code for Information Interchange. A set of 8-bit binary numbers representing the alphabet, punctuation, numerals, and other special symbols used in text representation and communications protocols.
Page 507 BOOTP Internet Bootstrap Protocol. This Internet protocol is used to configure the communications software on a load host. BOOTP/TFTP Server This is a load host that uses the BOOTP and TFTP Internet protocols to configure the load host and downline load the software. broadcast A access server port characteristic that allows one or more ports simultaneously.
Page 508 Cyclic Redundancy Check. An error detection scheme in which a receiver checks each block of data for errors. Clear To Send. A signal sent from the port device to the access server to indicate that the port device is ready to receive data. Cyclic Redundancy Check datagram IP datagram...
Page 509 dequeue To remove the first entry in a queue and to attempt the function for which the entry was queued. Domain Name System. An Internet naming system that maps, or translates, domain names to addresses. See domain names. domain names Internet.
Page 510 event logging This is a process of recording significant occurrences on the network. failover LAT. A failure-recovery function provided by LAT software. Failover occurs when a user’s current LAT session is disrupted by the failure of the service node. Failover attempts to connect the user to the same service on an alternative .
Page 511 image access server image initialization The process of running the access server diagnostic self-test program and, optionally, the access server with the downline loading Installation Verification Procedure Internet Internet (written in all lowercase letters) is a collection of packet switching networks that use protocols and are interconnected by gateways.
Page 512 Internet Protocol TCP/IP Internet Protocol. See IP datagram Internet. A basic unit of information transferred over the Internet. Installation Verification Procedure. This procedure verifies that the access server software was successfully installed on a OpenVMS Key Distribution Center. A Kerberos host that serves to validate a user’s identity with a Kerberos user name and password.
Page 513 LAT architecture A layered networking model that identifies LAT communications functions, assigns specific functions to distinct layers, and specifies general rules for communication between LAT nodes LAT Control Program A control program that provides a command interface that allows system and network managers to set up and manage an operating system as a LAT service LAT network...
Page 514 local name server that is authorized for the domain where the access server is located. name server local service Network resource offered by your access server. loopback test A access server asynchronous port test during which data is looped to the module. There are two types of loopback tests: internal and external.
Page 515 name resolution Internet. Refers to the process of translating a name into a corresponding Internet address. The Internet domain name system provides a mechanism for naming computers in which programs use remote name servers to resolve computer names into Internet addresses for those computers. name server Internet name server Network Control Program.
Page 516 Nonvolatile Random Access Memory NVRAM NVRAM Nonvolatile Random Access Memory. This is a power loss. ODL Font Protocol On-Demand Loading Font Protocol. A protocol that enables Asian terminals connected to the access server to use the LAT protocol to access Japanese and Chinese OpenVMS systems on the LAN.
Page 517 print spooler A program that enables many users to share the printing devices of a system, such as a access server. privileged status A port status that can only be set by a user that knows the access server privileged password.
Page 518 remote print queue A queue on a service node. The queue holds connection requests made from the service node requesting use of a printer (remote printer) on a access server. See request Request To Send retransmit limit The number of times a LAT virtual circuit message is retransmitted to a service node without an acknowledgment message.
Page 519 service rating A value assigned to a by the service node to indicate its relative network resource capability to accept new sessions. The rating is scaled from 0 to 255, where 255 is the greatest capacity. Access servers use this rating to choose a service node when a user attempts to connect to a service that is offered by multiple service nodes.
Page 520 subnet identifier This is the part of the network address that is unique to the subnet. It can be determined by logically ANDing the Internet address with the subnet mask. subnet mask A 32-bit quantity that enables gateways and host computers to know which bits in the Internet address correspond to their subnet address and which correspond to their host addresses.
Page 521 Terminal Device/Session Management Protocol TD/SMP Terminal Server Manager terminal session A single session on a access server port control. Time To Live TFTP Trivial File Transfer Protocol. For access servers, this Internet protocol is used to downline load software from a load host to the access server. transceiver Hardware equipment that provides an electrical connection to a network cable for a network...
Page 522 User Datagram Protocol. A protocol that is the part of the Internet Protocol that provides datagram service. It distinguishes between multiple destinations on a host, allowing multiple application programs executing on a host to independently exchange (send and receive) datagrams with multiple application programs on another host. User Datagram Protocol virtual circuit A logical communications path between a access server and a...
Page 523 Symbols * 4-6 /etc/add_DECserver procedure 4-2 /etc/list_DECserver procedure 4-2 /etc/rem_DECserver procedure 4-2 >>> 5-9 Numbers 3270 emulation 1-2 18-1 18-19 configuring 18-4 terminal 18-1 AARP 8-6 Abort Output (AO) 11-23 13-12 ACCESS Device characteristic 9-2 ACCESS characteristic 9-5 Dynamic 9-5 Local 9-5 None 9-5 Remote 9-5...
Page 524 address 8-2 cache size 8-3 characteristics 8-5 configuring 8-2 DDP packets 8-2 diaplaying routes 8-12 disabling 8-3 displaying counters 8-6 displaying status 8-10 echo packets 8-2 enabling 8-2 managing 8-1 network number 8-2 node number 8-2 Are You There (AYT) 11-23 13-12 ARP entries 7-1 7-18...
Page 525 executing 3-4 Commands CHANGE 1-6 CLEAR 2-3 CLEAR/PURGE TELNET LISTENER 2-11 CONNECT 4-6 11-11 DEFINE 1-6 definitions 2-3 DELETE 4-5 DSV$CONFIGURE 4-4 LIST 4-6 SERVER 4-4 SHOW 4-6 USE 4-6 HELP TUTORIAL 2-5 LIST 2-3 load hosts 4-4 logout 2-12 MODIFY 4-5 MONITOR 2-3 OPEN 11-11...
Page 526 management 1-3 Dialback 21-15 21-16 Dialer 21-1 displaying status 21-10 scripts 21-6 defining 21-4 names 21-5 services changing 21-12 characteristics 21-13 defining 21-9 DIALUP characteristic 10-14 DISCONNECT commands 11-14 12-15 ALL 11-14 PORT 11-51 DNS 22-7 Do-Binary 11-49 Do-ECHO 11-49 Do-End of Record 11-50 Domain Name 7-8 Domain Name System (DNS) 7-7...
Page 527 Last Error Appletalk status display 8-11 NCP 2-8 No Such Name 8-3 Errors framing 15-7 17-25 overrun 17-25 parity 17-25 Ethernet 2-8 8-14 15-3 17-2 17-10 counters data link 17-10 Ethernet Address AppleTalk ARP display 8-14 Event field 23-4 Fail Answers 7-10 Failover 11-7 disabling 11-7 File transfers 13-7...
Page 528 characteristic Changing the timeout period 9-14 SHOW SERVER display 2-6 Initialization access server 5-1 from Flash RAM image 5-5 specifying the software image name 5-5 using NCP 5-7 INITIALIZE command 5-4 DIAGNOSE option 5-6 Tests 5-6 DISABLE option 5-6 specifying the delay value 5-5 INPUT FLOW CONTROL device characteristic 9-2 Input Packets 7-9...
Page 529 network communications 1-3 17-2 networks 4-1 11-16 12-13 15-11 protocol 17-2 counters 17-10 protocols 11-6 service 21-1 service node 2-8 11-10 12-16 Services limited view 2-2 services 1-2 11-43 11-46 17-2 access configuration 12-3 configuring a computer as 12-7 configuring a modem as 12-8 configuring ports 12-2 counters 17-5 displaying characteristics 12-16...
Page 530 MODE command 21-14 MODEM CONTROL 10-3 10-9 10-12 10-15 10-18 12-13 characteristic 10-7 enabling 10-8 Modem signals 10-1 10-3 Access server type 10-3 access server type 10-3 description 10-5 Full MODEM CONTROL 10-3 MODEM CONTROL 10-3 Modems 19-3 configuring 10-15 12-6 Configuring as Telnet listener 13-3 dial-in 10-15...
Page 531 OUTPUT FLOW CONTROL device characteristic 9-3 Output Packets 7-9 Packet forwarding 15-3 Packets received 15-14 Packets sent 15-14 PAP 20-8 PARITY Device characteristic 9-3 Parity errors 17-25 PASSALL 11-36 PASSCHECK characteristic 6-13 Password authentication type defining 22-25 Password fail 23-9 Password limit 2-6 characteristic 22-38 SHOW SERVER display 2-6...
Page 532 Privileged password changing 2-4 Prompts 4-4 >>> 5-9 changing 17-10 ENTER PASSCODE> 22-23 Enter username> 11-34 LOCAL> 2-6 Local> 2-2 SecurID 22-23 Prot field 23-6 Protocols ANY 11-6 BOOTP 4-12 BOOTP/TFTP 4-2 MDS 4-2 MOP 2-7 23-7 PPP 1-2 11-6 23-7 SLIP 1-3 11-6...
Page 533 Response Information 6-16 Resume Output 11-44 Retransmit limit characteristic 6-15 SHOW SERVER display 2-6 RI 10-3 10-5 10-9 RING characteristic 10-12 RING Indicator (RI) 10-3 10-4 Ring Indicator (RI) 10-5 Router Lost 8-8 RTMP 8-8 RTS 10-3 10-5 10-9 10-12 10-13 Rx Field 23-8 Seconds Since Last Validated...
Page 534 INTERNET TCP KEEPALIVE TIMER 7-19 PORT 11-14 PORT characteristics 2-7 Short DDP Errors 8-7 SHOW command INTERNET COUNTERS 7-21 SHOW commands 2-3 8-10 APPLETALK ROUTES 8-12 DSV$CONFIGURE 4-6 INTERNET NAME RESOLUTION 7-7 INTERNET NAME RESOLUTION COUNTERS 7-9 NODE 4-5 PORT 9-4 PORT CHARACTERISTICS 11-24 port characteristics 18-21 PORT SESSION STATUS 11-27...
Page 535 AppleTalk ARP display 8-14 AppleTalk routes display 8-13 STOP BITS Device characteristic 9-3 Subnet mask 22-7 defaults 7-4 Subnets 15-5 routing 7-17 Suspect AppleTalk routes display 8-13 SWITCH CHARACTER characteristic 11-26 Configuring 11-27 Synch 11-23 TCP keepalive timer 7-1 7-19 TCP Segments 7-22 TCP/IP 4-2 TCP/IP network 10-14...
Page 536 ULTRIX 4-2 22-6 DECnet 2-7 UNIX 22-6 UNIX/OSF 4-2 UNIX/OSF/1 4-2 Unsent probes 8-6 Unsent responses 8-7 AppleTalk routes display 8-13 AppleTalk status display 8-11 USE command 4-6 User accounts 22-1 22-3 changing usernames 22-11 User authentication 1-2 User field 23-8 User groups 2-3 11-41 assigning 11-42...

Digital Equipment Digital NetRider Owner's Manual

Table of Contents

Management Tools

User Interface

Managing Load Hosts

Initializing the Access Server

Configuring LAT Characteristics

TCP/IP Network Characteristics

Managing Appletalk

Configuring Basic Device Characteristics

Configuring Modem Signals

Configuring and Managing Interactive Devices

Configuring and Managing LAT Services

Configuring and Managing Telnet Servers

Configuring LPD Printers

Configuring and Managing SLIP Ports

Configuring for SNMP Access

Managing the Access Server

Quick Links

Chapters

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Summary of Contents for Digital Equipment Digital NetRider