Page 1 Cayman 2E-H User’s Guide Release 5.6.2 November 2000...
Page 2 Copyrights Trademarks Copyright © 1999-2000 Cayman Systems All rights reserved Printed in the United States of America Portions of this software copyright 1988, 1991 by Carnegie Mellon University. All rights reserved. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice and this permission notice appear in supporting documentation, and that the name of Carnegie Mellon University...
Page 3: Table Of Contents
What’s New in Release 5.6.2 ......1-1 Cayman 2E-H Features......1-1 Cayman 2E-H Front Panel .
Page 4 Entering Commands in CONFIG Mode ... . . 4-16 Displaying Current Router Settings ....4-17 Stepping Through Cayman 2E-H Configuration.
Page 5 C How Your Cayman 2E-H Works Cayman 2E-H User’s Guide November 2000 Displaying the Overview Status ..... . 5-2 Displaying the Diagnostic Log ..... . . 5-2 Displaying IP ARP Statistics .
Page 6 What Older Models Look Like ..... . D-1 Cayman 2E-H Home Page ......D-2 Entering Serial Settings.
Page 7: About This Manual
Cayman 2E-H User’s Guide November 2000 Preface This manual describes how to connect your Cayman 2E-H to your local area network (LAN) and wide area network (WAN) and how to conﬁgure it to function as an Ethernet hub/router. You should read this manual completely before you connect your Cayman 2E-H to your Ethernet networks.
Page 8: Documentation Conventions
Chapter 5, “Monitoring Your Cayman 2E-H,” describes how to monitor the performance of your Cayman 2E-H. Chapter 6, “Updating Your System Software,” describes how to install a new version of the Cayman 2E-H operating software in your router. Appendix A, “Technical Speciﬁcations,” details hardware speciﬁcations and certiﬁcations for the Cayman 2E-H.
Page 9 Cayman 2E-H User’s Guide November 2000 Syntax conventions for the Cayman 2E-H command line interface are as follows: Optional command arguments are presented in straight ([ ]) brackets. Alternative values for an argument are presented in curly ({ }) brackets, with values separated with vertical bars (|).
Page 10 Preface Cayman 2E-H User’s Guide November 2000...
Page 11: What's New In Release 5.6.2
SWIFT-IP™ means that installing the Cayman 2E-H consists of connecting the device to your networks and entering a few basic settings. You can install and conﬁgure the Cayman 2E-H in less than 10 minutes. Web-based browser conﬁguration makes conﬁguration and management easy from anywhere on your network.
Page 12 Cayman 2E-H conﬁguration pages automatically warn you if an administrator password has not been set. Security features include restrictions on access to the Cayman 2E-H through its WAN port, limitations on packets addressed to an interface’s broadcast address, and enhanced handling of “spoofed” IP addresses.
Page 13: Cayman 2E-H Front Panel
Eight 10BaseT Ethernet hub ports lets you connect network devices within a workgroup. Each hub port has an integrated LED that remains on when the Cayman 2E-H is connected to the device and that ﬂashes when a packet is sent or received over the associated hub port.
Page 14: Cayman 2E-H Back Panel
Back Panel About Your Cayman 2E-H If your Cayman 2E-H has a Serial LED and looks like the device in Figure 1-2, you have an older version of the Cayman 2E-H. If so, you should consult Appendix D, “For Older Cayman 2E-H Models,” in addition to the information in chapter 3 and 4.
Page 15: Unpacking Your Cayman 2E-H
Connecting Your Cayman 2E-H Disconnecting Your Cayman 2E-H The ﬁrst thing you should do when you receive the Cayman 2E-H package is conﬁrm that you have everything you should. Remove all the materials from the shipping carton and verify that you have the...
Page 16: Connecting Your Cayman 2E-H
The 10Base-T Ethernet ports on the rear panel of the Cayman 2E-H are used to connect the device to your corporate network, wide area network, or the Internet.
Page 17: Step 2: Connect Your Local Devices
Insert one end of a twisted-pair cable in one of the ports labeled LAN 10BT on the Cayman 2E-H front panel until you feel it lock (Figure 2-1). Connect the other end of the cable to the Ethernet port on a personal computer or other networked device.
Page 18: Step 3: Connect Your Wide Area Network
Setting Up Your Cayman 2E-H Insert one end of a twisted-pair cable in the port labeled WAN 10BT on the Cayman 2E-H back panel until you feel it lock (Figure 2-2). Connect the other end of the cable to the Ethernet hub, cable modem, or xDSL modem that links you to your corporate network, wide area network, or the Internet.
Page 19: Disconnecting Your Cayman 2E-H
2E-H Cayman 2E-H User’s Guide November 2000 Complete the following steps to disconnect your Cayman 2E-H from your Ethernet networks. Return the Cayman 2E-H to its original carton if you are moving it to a different location. 1. Warn and disconnect network users.
Page 20 Setting Up Your Cayman 2E-H Cayman 2E-H User’s Guide November 2000...
Page 21: Gathering Configuration Information
Cayman 2E-H User’s Guide November 2000 Conﬁguring Your Cayman 2E-H Gathering Conﬁguration Information Conﬁguring Your Computer Opening a Web Connection Entering Basic Settings Entering LAN (Ethernet A) Settings Entering WAN (Ethernet B) Settings Conﬁguring Password Settings Conﬁguring Pinhole Settings Conﬁguring SNMP Settings...
Page 22: Quickstart Information
QuickStart Information Conﬁguring Your Cayman 2E-H Before you conﬁgure your Cayman 2E-H, you need to gather information about your networks. Most users will only need to complete the QuickStart section. For many users, the default (or factory) conﬁguration of the product will provide all the necessary services.
Page 23: Lan Port (Ethernet A) Information (Optional)
Address If you want to customize the settings for the LAN (Ethernet A) interface on your Cayman 2E-H, print the following table and use it to enter information in the Cayman 2E-H LAN Ethernet window. Some ﬁelds listed in the table only appear after you click the Expert Mode button on the Cayman 2E-H Home window.
Page 24 Conﬁguring Your Cayman 2E-H Field Name Description Start Address The first IP address the Cayman 2E-H should assign for (expert mode) Dynamic Host Control Protocol clients. Applicable when DHCP Mode is set to Server . Default is 192.168.1.1 End Address...
Page 25: Wan (Ethernet B) Port Information (Optional)
Cayman 2E-H User’s Guide November 2000 If you want to customize the settings for the WAN (Ethernet B) port on your Cayman 2E-H, print the following table and use it to enter information in the Cayman 2E-H Ethernet B (WAN) Conﬁguration window.
Page 26 Open the TCP/IP Control Panel. b. Choose Connect via Ethernet. c. Choose Configure Using DHCP Server and enter the IP address of the Cayman 2E-H (192.168.1.254) in the Name Server Address text box. d. Click OK. If you are using a Macintosh running MacTCP: Open the MacTCP Control Panel and select the Ethernet interface icon.
Page 27: Opening A Web Connection
Internet Explorer, to open a connection to your Cayman 2E-H. To open a connection to your Cayman 2E-H: 1. Run your Web browser. 2. Enter the name or IP address of your Cayman 2E-H in the browser's Open Location window and press Enter. For example, you would enter Cayman 2E-H is using its default IP address.
Page 28 Figure 3-1 Cayman 2E-H Home Window (Novice Mode) If you enable PPPoE, the Cayman 2E-H Home window refers to the WAN port as Ethernet B (PPPoE) instead of Ethernet B (WAN) (Figure 3-2).
Page 29 Cayman 2E-H User’s Guide November 2000 4. Use the buttons on the Cayman 2E-H Home Page to issue a command or open a window. The Quickstart button opens the QuickStart window, which lets you enter basic settings for your Cayman 2E-H.
Page 30: Entering Basic Settings
IP address information for the device's WAN (Ethernet B) port, the Cayman 2E-H QuickStart window asks you only for the name you want to assign your Cayman 2E-H. If you have overridden the default settings for IP address information for...
Page 31: Manual Quickstart
3. Click the Restart Cayman-2E button to restart your Cayman 2E-H with its new conﬁguration. If you want to modify the default settings for the Cayman 2E-H’s WAN port, click the Manual QuickStart button on the QuickStart window to display the Manual QuickStart window (Figure 3-5).
Page 32 Conﬁguring Your Cayman 2E-H 3-12 To conﬁgure the Manual QuickStart window: 1. Enter the name of your Cayman 2E-H in the System Name ﬁeld. Each Cayman 2E-H is assigned a name as part of its factory initialization. The default name for a Cayman 2E-H consists of the word “2E”...
Page 33: Quickstart (Pppoe On)
Home Page to restart your Cayman 2E-H with its new conﬁguration. if your Cayman 2E-H is conﬁgured to use PPPoE (PPP over Ethernet) framing, the PPPoE QuickStart window (Figure 3-6) opens when you click the QuickStart button on the Cayman 2E-H Home Page.
Page 34 PPP link is being established in the PPP Username ﬁeld. This is the username the Cayman 2E-H sends in a PAP or CHAP response packet. The information you enter must match the CHAP username conﬁgured in the remote PPP peer's authentication database.
Page 35: Entering Lan (Ethernet A) Settings
If your network falls into this category, do not change the LAN Ethernet settings. To display the Ethernet Port (LAN) Conﬁguration window (Figure 3-7), click the Ethernet A (LAN) button on the Cayman 2E-H Home Page. Figure 3-7 Ethernet Port (LAN) Conﬁguration Window (expert mode) To conﬁgure your Ethernet settings:...
Page 36 Most sites should use 255.255.255.0 for their subnet mask. If you have turned on Expert Mode on the Cayman 2E-H Home window, you will see a set of DHCP ﬁelds on the Ethernet Port Conﬁguration (LAN) window. If you did not turn on Expert Mode, you can skip to Step 8, below.
Page 37: Entering Wan (Ethernet B) Settings
Ethernet Port B conﬁguration information from a DHCP server on your wide area network. To display the Ethernet Port B (WAN) Conﬁguration window (Figure 3-8), click the Ethernet B (WAN) button on the Cayman 2E-H Home Page. Conﬁguring Your Cayman 2E-H...
Page 38 If you want your Cayman 2E-H to acquire the IP address for its WAN port from a DHCP server on your wide area network, enter 0.0.0.0...
Page 39: Pppoe Is On
Home Page to restart your Cayman 2E-H with its new conﬁguration. If you turn on PPPoE for the Cayman 2E-H’s WAN port (meaning that your Cayman 2E-H uses PPP framing over its WAN interface), you will see a different window (Figure 3-9) when you click the Ethernet B (PPPoE) button on the Cayman 2E-H Home Page.
Page 40 PPP link is being established in the PPP Username ﬁeld. This is the username the Cayman 2E-H sends in a PAP or CHAP response packet. The information you enter must match the CHAP username conﬁgured in the remote PPP peer's authentication database.
Page 41 Cayman 2E-H User’s Guide November 2000 your Cayman 2E-H if you enter 0.0.0.0 in the Local Address ﬁeld. If you specify an IP address other than 0.0.0.0, your Cayman 2E-H will not negotiate its IP address with the remote peer.
Page 42: Configuring Password Settings
Cayman 2E-H does not affect communications through the device. To display the Password Conﬁguration window (Figure 3-10), click the Passwords button on the Cayman 2E-H Home Page. You must be in Expert Mode to open the Password Conﬁguration window. Cayman 2E-H User’s Guide...
Page 43 1. Use the Password Level list to select the type of password you want to enter. You can choose Admin or User. You must assign the Cayman 2E-H an Admin password before you can assign it a User password. 2. If you assigned a password to the Cayman 2E-H previously, enter your current password in the Old Password ﬁeld.
Page 44: Configuring Pinhole Settings
To display the Pinhole Conﬁguration window (Figure 3-11), click the Pinhole button on the Cayman 2E-H Home Page. You must be in Expert Mode to open the Pinhole Conﬁguration window. Cayman 2E-H User’s Guide...
Page 45 80 in this ﬁeld. After you have made this change, you will need to use this port number to open a Web connection to the Cayman 2E-H. For example, if you change the Web-HTTP port to 1080 on a...
Page 46 After you have made this change, you will need to include this port number when you open a Telnet connection to the Cayman 2E-H. For example, if you change the Telnet port to 1023 on a Cayman 2E-H using its default IP address ), you would open a Telnet connection to the 192.168.1.254...
Page 47 Home button. Your router saves the new pinhole information and return you to the Cayman 2E-H home page. 14. Click the Restart Cayman-2E button on the Cayman 2E-H Home Page to restart your Cayman 2E-H with its new conﬁguration.
Page 48: Configuring Snmp Settings
SNMP Setup window lets you enter SNMP conﬁguration information for your Cayman 2E-H. To display the SNMP Setup window (Figure 3-12), click the SNMP button on the Cayman 2E-H Home Page. You must be in Expert Mode to open the SNMP Setup window. Figure 3-12 SNMP Setup Window To conﬁgure the SNMP settings for your Cayman 2E-H:...
Page 49 For example, you might enter the building, ﬂoor, or room number where the Cayman 2E-H is located. 3. If you want the Cayman 2E-H to use authentication traps, click the Authentication Traps On radio button. If SNMP trapping is enabled, your Cayman 2E-H sends authentication traps to all SNMP trap destinations.
Page 50 Conﬁguring Your Cayman 2E-H 3-30 9. Click the Restart Cayman-2E button on the Cayman 2E-H Home Page to restart your Cayman 2E-H with its new conﬁguration. Cayman 2E-H User’s Guide November 2000...
Page 51: Using The Command Line Interface
The Cayman 2E-H operating software includes a command line interface (CLI) that lets you monitor and conﬁgure your Cayman 2E-H over a Telnet or console connection. You can use the command line interface to enter and update a Cayman 2E-H’s conﬁguration settings, monitor its performance, and restart it.
Page 52 Using the Command Line Interface telnet ip_address You must know the IP address of the Cayman 2E-H before you can make a Telnet connection to it. By default, your Cayman 2E-H uses 192.168.1.254 as the IP address for its LAN interface. You can use a Web browser or the maintenance console to conﬁgure the Cayman...
Page 53 Logging In The command line interface log-in process emulates the log-in process for a UNIX host. If your Cayman 2E-H has been assigned an administrator password or user password, you must enter a username (up to 32 characters) and your password.
Page 54: Using The Cli Help Facility
You can save the changes you have entered for a speciﬁc function or for all functions in the Cayman 2E-H. The Cayman 2E-H automatically validates its settings when you save and displays a warning message if the conﬁguration is not correct.
Page 55: Root Command Shortcuts
Sends an Address Resolution Protocol (ARP) request to match the IP address to an Ethernet hardware address. nnn.nnn.nnn.nnn clear [yes] Clears the conﬁguration settings in a Cayman 2E-H. If you do not use the optional qualiﬁer, you are prompted to conﬁrm the command.
Page 56 The test timed out without producing a result. Try running the test again. download [server_address] [filename] [confirm] Copies the current conﬁguration settings of the Cayman 2E-H from a TFTP (Trivial File Transfer Protocol) server. The TFTP server must be accessible on your Ethernet network.
Page 57 ﬁle on the TFTP server. If you include the optional confirm prompted to identify a TFTP server or ﬁle name. Your Cayman 2E-H begins the software installation using its default boot settings. log message_string Adds the message in the message_string 2E-H diagnostic log.
Page 58 [-s size [-c count { hostname | ip_address } Causes the Cayman 2E-H to issue a series of ICMP Echo requests for the device with the speciﬁed name or IP address. argument is the name of the device you want to hostname ping;...
Page 59 Clears crash-dump information, which identiﬁes the contents of the Cayman 2E-H registers at the point of system malfunction. reset dhcp client release Releases the DHCP lease the Cayman 2E-H is currently using to acquire the IP settings for its WAN (Ethernet B) port. reset dhcp client renew Renews the DHCP lease the Cayman 2E-H is currently using to acquire the IP settings for its WAN (Ethernet B) port.
Page 60 [seconds] Restarts your Cayman 2E-H. If you include the optional argument, your Cayman 2E-H will restart when the speciﬁed number of seconds have elapsed. You must enter the complete command to initiate a restart.
Page 61 DHCP leases that are used in use or that have been used since your Cayman 2E-H was restarted. You can include the argument to see the list of DHCP leases that free are available for use.
Page 62 Displays the current status of a Cayman 2E-H, the device's hardware and software revision levels, a summary of errors encountered, and the length of time the Cayman 2E-H has been running since it was last restarted. Identical to the start ppp Opens a PPP link (including PPP over Ethernet).
Page 63 Telnet session. traceroute { hostname | ip_address } Lets you trace the route between the Cayman 2E-H and the speciﬁed host. argument is the name of the device you want to hostname trace;...
Page 64: About Config Commands
When you are in CONFIG mode, the CLI prompt consists of the name of the Cayman 2E-H followed by your current node in the hierarchy and two right angle brackets (>>). For example, when you enter CONFIG mode (by typing prompt reminds you that you are at the top of the Dogzilla (top)>>...
Page 65 Cayman 2E-H User’s Guide November 2000 CONFIG node starts with I, you could enter one letter (“i”) to move to the IP node. Dogzilla (top)>> i Dogzilla (ip)>> Jumping down several nodes at once — You can jump down several levels in the CONFIG hierarchy by entering the complete path to a node.
Page 66: Entering Commands In Config Mode
(‘) quote marks. If the text string includes an embedded space, it must be enclosed in quotes. Special characters are represented using backslash notation. , and ) and two ethernet address ). When you use the Cayman 2E-H User’s Guide November 2000...
Page 67: Displaying Current Router Settings
If you enter the intermediate node, you see settings for that node and its subnodes. The Cayman 2E-H command line interface includes a step mode to automate the process of entering conﬁguration settings. When you use the CONFIG step mode, the command line interface prompts you for all required and optional information.
Page 68: Validating Your Configuration
Global Validation did not pass inspection! You can use the command to verify your conﬁguration validate settings at any time. Your Cayman 2E-H automatically validates your conﬁguration any time you save a modiﬁed conﬁguration. from the top . For example:...
Page 69: Config Commands
{ on | off } Enables or disables bridging services in the Cayman 2E-H. You must enable bridging services within the Cayman 2E-H before you can enable bridging for a speciﬁc interface.
Page 70: Dhcp Settings
If you selected , speciﬁes the ﬁrst address in the DHCP server address range. The Cayman 2E-H can reserve a sequence of up to 253 IP addresses within a subnet, beginning with the speciﬁed address for dynamic assignment. set dhcp end-address ip_address If you selected , speciﬁes the last address in the DHCP address...
Page 71: Domain Name System Settings
{ on | off } Enables or disables your ability to override the Ethernet MAC address for the WAN port on your Cayman 2E-H. You must enable the Ethernet MAC address before you can specify a new Ethernet MAC address.
Page 72: Ip Settings
You can use the command line interface to specify whether TCP/IP is enabled, identify a default gateway, and to enter TCP/IP settings for the Cayman 2E-H LAN and WAN ports. If PPPoE is turned off, you must specify settings for Ethernet A and B separately. if PPPoE is turned on, you can omit the A|B labels.
Page 73 Speciﬁes whether an administrator can open a Telnet connection to the Cayman 2E-H over the designated Ethernet interface to monitor and conﬁgure the Cayman 2E-H. On the Cayman 2E-H LAN port, you can enable or disable administrator access. On the WAN port, you can enable or disable administrator access or specify that the WAN port can only be used for administrative trafﬁc.
Page 74 [ A | B ] rip-receive { off | v1 | v2 | v1-compat | v2-MD5 } Speciﬁes whether the Cayman 2E-H should use Routing Information Protocol (RIP) broadcasts to update its routing tables with information received from other routers on your network.
Page 75: Default Ip Gateway Settings
Speciﬁes how the Cayman 2E-H should route information to the default gateway. If you select address of a host on a local or remote network. If you specify the Cayman 2E-H uses the default gateway being used by the remote PPP peer. set ip gateway default ip_address Speciﬁes the IP address of the default IP gateway.
Page 76 PPP interface will use the IP address assigned to it by the remote peer. Note that the remote peer must be conﬁgured to supply an IP address to your Cayman 2E-H if you enter 0.0.0.0 for the argument.
Page 77: Static Arp Settings
ARP table entries do not time out. You can conﬁgure as many as 16 static ARP table entries for a Cayman 2E-H. Use the following commands to add static ARP entries to the Cayman 2E-H static ARP table:...
Page 78: Static Route Settings
Consequently, static routes are useful when working with PPP, since an intermittent PPP link may make maintenance of dynamic routes problematic. You can conﬁgure as many as 16 static IP routes for a Cayman 2E-H. Use the following commands to maintain static routes to the Cayman 2E-H routing table: set ip static-routes destination-network net_address Speciﬁes the network address for the static route.
Page 79: Wan Settings
{ on | off } Enables or disables communications through the WAN Ethernet port in the Cayman 2E-H. You must enable TCP/IP functions for the WAN port before you can conﬁgure its network settings. Using the Command Line Interface...
Page 80 Using the Command Line Interface 4-30 set ip wan address ip_address Assigns an IP address to the Cayman 2E-H on the wide area network. The IP address you assign to an Ethernet port must be unique on your network. set ip wan broadcast broadcast_address Speciﬁes the broadcast address for the TCP/IP network connected to...
Page 81: Network Address Translation (Nat) Default Settings
ARP is turned off. NAT default settings let you specify whether you want your Cayman 2E-H to forward NAT trafﬁc to a default server when it doesn’t know what else to do with it. The NAT default host function is useful in situations where you cannot create a speciﬁc NAT pinhole for a...
Page 82 SNMP (TCP 161, UDP 161) set pinhole name name Speciﬁes the identiﬁer for the entry in the router's pinhole table. You can name pinhole table entries sequentially (1, 2, 3), by port number (21, 80, 23), by protocol, or by some other naming scheme.
Page 83: Pppoe Settings
PPPoE before you can enter other PPP settings. Basic PPP Settings set PPP module option { on | off } Enables or disables PPP on the Cayman 2E-H. By default, PPP is turned off. set PPP module mru integer Speciﬁes the Maximum Receive Unit setting for the PPP interface.
Page 84 Speciﬁes whether you want your Cayman 2E-H to send LCP echo requests. By default, LCP echoing is turned on. You should turn off LCP echoing if you do not want the Cayman 2E-H to drop a PPP link to a nonresponsive peer.
Page 85: Port Authentication
As a result, the port authentication names for PAP and CHAP must be identical to the peer names for your Cayman 2E-H on the remote peer. If you do not conﬁgure a chap-name or pap-name, then the authentication packets sent by the...
Page 86 PAP authentication and save the modiﬁed conﬁguration, your Cayman 2E-H retains its PAP settings. set PPP module port-authentication pap-name pap_name Speciﬁes the name the Cayman 2E-H sends in a PAP response packet. argument is 1- 32 alphanumeric characters. The pap_name information you enter must match the PAP username conﬁgured in...
Page 87 Cayman 2E-H User’s Guide November 2000 Peer Authentication You can specify that your Cayman 2E-H will use PAP, CHAP, or both to authenticate a remote peer as a PPP link is being completed. Perform the following steps to specify how your Cayman 2E-H should authenticate remote peers.
Page 88: Command Line Interface Preference Settings
(which is useful for capturing information to a text ﬁle). If you use NAT pinholes to forward HTTP or Telnet trafﬁc through your Cayman 2E-H to an internal host, you must change the port numbers the Cayman 2E-H uses for its own conﬁguration trafﬁc. For example, if you set up a NAT pinhole to forward network trafﬁc on...
Page 89: Snmp Settings
[ 0 - 32767 ] Speciﬁes the port number for HTTP (web) communication with the Cayman 2E-H. Because port numbers in the range 0-1024 are used by other protocols, you should use numbers in the range 2000-32767 when assigning new port numbers to the Cayman 2E-H web conﬁguration interface.
Page 90: System Settings
1-16 characters long and cannot include spaces or special characters. Once you have assigned a name to your Cayman 2E-H, you can enter that name in the Open Location text ﬁeld of your browser to open a connection to your Cayman 2E-H.
Page 91 November 2000 set system diagnostic-level level Speciﬁes the types of log messages you want the Cayman 2E-H to record. All messages with a level number equal to or greater than the level you specify are recorded. For example, if you specify set system...
Page 92: Traffic Shaping Settings
Passwords go into effect immediately. You do not have to restart the Cayman 2E-H for the password to take effect. Assigning an administrator or user password to a Cayman 2E-H does not affect communications through the device. Trafﬁc shaping lets you control how much trafﬁc can ﬂow through an Ethernet interface by limiting the size of the WAN “pipe.”...
Page 93 Cayman 2E-H User’s Guide November 2000 Monitoring Your Cayman 2E-H Displaying the Overview Status Displaying the Diagnostic Log Displaying IP ARP Statistics Displaying IP Interface Statistics Displaying IP Routes Displaying DHCP Server Statistics Displaying DHCP Client Statistics Displaying Memory Statistics...
Page 94: Displaying The Overview Status
Monitoring Your Cayman 2E-H The Monitor window lets you display information about the status of your Cayman 2E-H. To open the Monitor window, click the Monitor button on the Cayman 2E-H Home Page. When the Monitor window opens, click the button for the type of information you want.
Page 95 Cayman 2E-H User’s Guide November 2000 The Diagnostic Log window does not update itself automatically. If you want to view messages added since the Diagnostic Log window was opened, click the Show button again. If you want to view a complete updated list of diagnostic messages, you must set the log ﬁle back to the top.
Page 96: Displaying Ip Arp Statistics
Statistics Monitoring Your Cayman 2E-H The IP ARP table displays the static and dynamic address resolution information maintained by the Cayman 2E-H. To display the IP ARP Statistics window, click the IP ARP button on the Monitor window. Figure 5-3.
Page 97: Displaying Ip Routes
Cayman 2E-H User’s Guide November 2000 The IP Routes window displays information about the IP routes stored in your Cayman 2E-H. To display the IP Routes window, click the IP Routes button on the Monitor window. Figure 5-5. IP Routes Monitor The Dynamic Host Conﬁguration Protocol (DHCP) lets your Cayman...
Page 98: Displaying Dhcp Client Statistics
Monitoring Your Cayman 2E-H Figure 5-6. DHCP Server Statistics As a DHCP client, your Cayman 2E-H can accept IP address information from a DHCP server on your network. To display the DHCP Client Statistics window, click the DHCP Client button on the Monitor window.
Page 99: Displaying Memory Statistics
Statistics Cayman 2E-H User’s Guide November 2000 The Memory monitor window displays information about memory allocation in your Cayman 2E-H. To display the Memory monitor window, click the Memory button on the Monitor window. Figure 5-8. Memory Monitor The Ethernet Statistics monitor window displays information about each Ethernet interface for your Cayman 2E-H.
Page 100: Displaying Pppoe Statistics
Displaying PPPoE Statistics Monitoring Your Cayman 2E-H Figure 5-9. Ethernet Statistics Monitor The PPPoE Statistics window displays information about the PPPoE trafﬁc on your network. To display the PPPoE Statistics window, click the PPPoE button on the Monitor window. Figure 5-10.
Page 101: Using The Diagnose Utility
November 2000 The Diagnose utility runs a series of internal checks and loopback tests to verify network connectivity over each interface on your Cayman 2E-H. To run the Diagnose utility, click the Diagnose button on the Monitor window. Figure 5-11...
Page 102 Monitoring Your Cayman 2E-H Cayman 2E-H User’s Guide 5-10 November 2000...
Page 103: Using The Home Page To Install A New Image
You can install a new operating system image in your Cayman 2E-H from the Home Page. To do so, the computer you are using to connect to the Cayman 2E-H must be on the same local area network as the Cayman 2E-H.
Page 104 If you have not previously saved your conﬁguration (that is, if you are running the factory default conﬁguration your Cayman 2E-H came with), click the Ethernet button on the Cayman 2E-H home page. When the Ethernet window appears, click Save.
Page 105: Using The Installer To Install A New Image
You must run the Installer utility from a computer running Windows 95, Windows 98, or Windows NT on the Cayman 2E-H local area network. To install new operating system software in your Cayman 2E-H from a Windows computer: 1.
Page 106: Using Tftp To Install A New Image
Cayman from the Start menu and choose the Installer program. 9. When the Installation Target Selection window appears, enter the name or IP address of your Cayman 2E-H in the IP Address or Name text ﬁeld. The default IP address is 10.
Page 107 Cayman 2E-H User’s Guide November 2000 To install new operating system software in your Cayman 2E-H from a TFTP server: 1. Download the software image from http://www.cayman.com 2. Copy the ﬁle to the TFTP server for your location. 3. Use the...
Page 108 Updating Your System Software Cayman 2E-H User’s Guide November 2000...
Page 109: Components
Cayman 2E-H User’s Guide November 2000 Technical Speciﬁcations Technical speciﬁcations and certiﬁcations subject to change. Changes or modiﬁcations not expressly approved by your authorized Cayman 2E-H reseller can void your authority to operate the equipment. Processor Motorola MPC 850 Memory...
Page 110: Size
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning Cayman 2E-H User’s Guide November 2000...
Page 111 Canadian Interference Notice Cayman 2E-H User’s Guide November 2000 the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver...
Page 112 Technical Speciﬁcations Cayman 2E-H User’s Guide November 2000...
Page 113: About The Diagnostic Console
Diagnostic Console The Cayman 2E-H diagnostic console lets you conﬁgure a Cayman 2E-H to boot and/or download its software from various sources. The diagnostic console also lets you clear or program the Cayman 2E-H ﬂash EPROM, which stores the main system software.
Page 114: Connecting A Terminal To The Console Port
Terminal to the Console Port Diagnostic Console To connect your Cayman 2E-H to a terminal or terminal emulator: 1. Turn off the Cayman 2E-H. 2. Plug one end of the serial cable into the maintenance console port on the Cayman 2E-H back panel.
Page 115: Using The Diagnostic Console
Cayman 2E-H. 6. When the console displays STAY IN EPROM?, type Y. The Cayman 2E-H console prompt (BootPROM>) appears, indicating that the Cayman 2E-H is now operating in diagnostic (EPROM) mode. You communicate with the diagnostic console via a simple command-line interface.
Page 116: Basic Commands
The defaults command sets the EPROM settings in the Cayman 2E-H to their factory default values. After you reset the Cayman 2E-H EPROM values to their defaults, you must save them to non-volatile storage with the save command.
Page 117: Administration Commands
[{ flash | tftp | bootp }] [nogo] If you do not enter an argument, the boot command causes the Cayman 2E-H to behave as if it had been powered up with autoboot enabled. That is, it will try to download its image from ﬂash, TFTP, and BOOTP (if enabled) in that order.
Page 118 The erase command completely erases the speciﬁed ﬂash memory area in the Cayman 2E-H. erase code clears the code ﬂash in the Cayman 2E-H. erase options clears the parameter ﬂash (not the EPROM settings). Compare to the clear command, which clears the current and non-volatile copies of the Cayman 2E-H EPROM settings.
Page 119: Boot Setting Commands
Cayman 2E-H. show The show command displays the current EPROM settings for the Cayman 2E-H and a brief explanation of those settings. For example, the show command produces the following: BootPROM> show flash on...
Page 120 1. If ﬂash is enabled, start an image from the Cayman 2E-H code ﬂash memory, using the conﬁgured image number; else 2. If ip is enabled, load an image via IP TFTP using the conﬁgured IP server, IP gateway, netmask and ﬁlename;...
Page 121 IP hosts. ipgateway ip_address The ipgateway ip_address the router (if any) between the Cayman 2E-H and its IP TFTP server in dotted decimal notation. Enter ipgateway 0 to disable the IP gateway function. ipnetmask netmask The ipnetmask command speciﬁes the subnet mask for...
Page 122 Diagnostic Console Cayman 2E-H User’s Guide B-10 November 2000...
Page 123: About Network Address Translation
Ethernet network connected to its LAN interface from routers on networks connected to its WAN interface. When NAT is enabled, the Cayman 2E-H “proxies” for computers on your network by pretending to be the originating host for network communications from non-originating networks.
Page 124: Tcp/Ip Routing
Bridges let you join two local area networks, so that they appear to be part of the same physical network. As a bridge for protocols other than TCP/IP, your Cayman 2E-H keeps track of as many as 255 MAC (Ethernet hardware) addresses, each of which uniquely identiﬁes an individual host on a network.
Page 125: About Dhcp
MAC address and the interface appropriate for reaching that host to its bridging table. The Cayman 2E-H tracks the age of each entry in its bridging table, and deletes entries that aren't used after 10 minutes. If more than 255 entries are active at the same time, the Cayman 2E-H discards the oldest entries to make room for new ones.
Page 126: Cayman 2E-H As Dhcp Client
IP addresses among a group of clients that do not need permanent IP addresses. The Cayman 2E-H is conﬁgured at the factory to act as a DHCP client on its WAN port. This means that, if substitute IP address information is not conﬁgured for the WAN port, the Cayman 2E-H will send a...
Page 127: How Ppp Works
Each phase is described separately below. Link Establishment The manner in which a PPP link is opened depends on whether the router's serial or Ethernet port is conﬁgured as a dial-in, dial-out, or dedicated PPP interface: How Your Cayman 2E-H Works...
Page 128 How Your Cayman 2E-H Works Dial-in – If a port is conﬁgured as a dial-in interface, the router sends an initialization string to the modem when it is turned on to prepare it to accept calls. When the local modem receives an...
Page 129 Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP)) to ensure that unauthorized users do not access network services. By default, authentication is not required as part of the PPP link process. However if a peer requires How Your Cayman 2E-H Works...
Page 130 If you specify that a serial port can use either CHAP or PAP to authenticate a remote peer (that is, both CHAP and PAP are enabled), the router tries to use CHAP to authenticate connection requests. If the remote peer does not support CHAP, the router requires that the remote peer use PAP to authenticate itself.
Page 131 When a peer no longer needs a link, it sends a Terminate-Request packet to the remote peer and closes any open NCP sessions. When How Your Cayman 2E-H Works...
Page 132: Ppp And Routing Tables
Your Cayman 2E-H maintains a routing table for its IP routing service. The routing table identiﬁes the networks a router can reach, the...
Page 133: Dealing With Unavailable Routes
Cayman 2E-H User’s Guide November 2000 directly to the router has a metric of 1, a route to a network reachable through one other gateway has a metric of 2, and so on. Routes with metrics greater than 16 are considered unreachable and are discarded.
Page 134 How Your Cayman 2E-H Works C-12 Timing out – When a router adds a dynamic route to its routing table, it starts a timer for that route. This timer is restarted whenever the router receives another RIP packet advertising the router.
Page 135: About Ppp Over Ethernet (Pppoe
The Discovery stage of a PPPoE session consists of four steps: 1. Initiation – When a host wants to open a PPPoE session, it sends out a PPPoE Active Discovery Initiation (PADI) broadcast asking any available Access Concentrators to respond. If a host How Your Cayman 2E-H Works C-13...
Page 136 How Your Cayman 2E-H Works C-14 does not receive a response within the timeout period, it resends its PADI packet and doubles its timeout period. 2. Offer – If an Access Concentrator for the network can serve the request, it sends a PPPoE Active Discovery Offer (PADO) packet to the host identifying its name and the services it can offer to the host.
Page 137 Cayman 2E-H User’s Guide November 2000 occurs, no further PPP trafﬁc, including standard PPP termination trafﬁc, is permitted between the host and the Access Concentrator. How Your Cayman 2E-H Works C-15...
Page 138 How Your Cayman 2E-H Works Cayman 2E-H User’s Guide C-16 November 2000...
Page 139: What Older Models Look Like
Entering Serial Settings You have an older version of the Cayman 2E-H if your router looks like the one in Figure D-1. The older version of the Cayman 2E-H has three LEDs (Power, Serial, and Ethernet B) and a higher proﬁle enclosure.
Page 140: Cayman 2E-H Home Page
Home Page Entering Serial Settings For Older Cayman 2E-H Models If you have an older version of the Cayman 2E-H, you will see three additional buttons on the Cayman 2E-H Home Page (Figure 3-1 on page 3-8). Figure D-2 Cayman 2E-H Home Page The Serial button opens the Serial window, which lets you conﬁgure settings for the serial port on the Cayman 2E-H.
Page 141 IP address suggested by the remote peer when a PPP link is being opened. If you want the serial port of your Cayman 2E-H to have a ﬁxed (non-negotiable) IP address, enter the appropriate IP address in the Local Address ﬁeld. If the remote peer does not accept the IP address speciﬁed for the Cayman 2E-H's serial port, the PPP...
Page 142 2. Enter the IP address of the remote PPP peer in the Peer Address ﬁeld. If you want the Cayman 2E-H to accept the IP address that the remote PPP peer provides for itself, enter 0.0.0.0 in the Peer Address ﬁeld.
Page 143 8. Click the Save button to store your modiﬁed conﬁguration in the Cayman 2E-H memory. 9. Click the Restart Cayman 2E-H button on the Cayman 2E- H Home Page to restart your Cayman 2E-H with its new conﬁguration.
Page 144 For Older Cayman 2E-H Models Cayman 2E-H User’s Guide November 2000...
Page 145 ADSL ANSI ASCII Cayman 2E-H User’s Guide November 2000 Glossary IEEE 802.3 speciﬁcation for Ethernet that uses thin coaxial cable to run at 10 Mbps. Limited to 185 meters per segment. 10Base5 IEEE 802.3 baseband physical layer speciﬁcation for Ethernet that uses thick coaxial cable to run at 10 Mbps.
Page 146 Storage area used to hold data until it can be forwarded. Signal suitable for transmission of information. Comité Consultatif International Télégraphique et Téléphonique or Consultative Committee for International Telegraph and Telephone. An international organization responsible for developing telecommunication standards. Carrier Detect. Cayman 2E-H User’s Guide November 2000...
Page 147 CSU/DSU data bits datagram dedicated line Cayman 2E-H User’s Guide November 2000 Challenge-Handshake Authentication Protocol. Security protocol in PPP that prevents unauthorized access to network services. See RFC 1334 for PAP speciﬁcations Compare PAP. Network node that requests services from a server.
Page 148 Glossary Dynamic Host Conﬁguration Protocol. A network conﬁguration protocol that lets a router or other device assign IP addresses and supply other network conﬁguration information to computers on your network. Port setting that speciﬁes that other routers can initiate a connection to the local router but that the local router cannot initiate a connection to other routers.
Page 149 FTP server hardware handshake HDLC HDSL header Cayman 2E-H User’s Guide November 2000 Technique used to enclose information formatted for one protocol, such as AppleTalk, within a packet formatted for a different protocol, such as TCP/IP. The application of a speciﬁc algorithm to a data set so that anyone without the encryption key cannot understand the information.
Page 150 Random number generated by a router and included in packets it sends to other routers. If the router receives a packet with the same magic number it is using, the router sends and receives packets with new random numbers to determine if it is talking to itself.
Page 151 November 2000 Distance, measured in the number of routers a packet must traverse, that a packet must travel to go from a router to a remote network. A route with a low metric is considered more efﬁcient, and therefore preferable, to a route with a high metric. See hop count.
Page 152 Table stored in a router or other networking device that records available routes and distances for remote network destinations. Request to Send. Circuit activated in hardware ﬂow control when a computer (or other DTE) is ready to transmit data to a modem (or other DCE).
Page 153 T1 link Telnet twisted pair xon/xoff Cayman 2E-H User’s Guide November 2000 A 32-bit address mask that identiﬁes which bits of an IP address represent network address information and which bits represent node identiﬁer information. Method of data communication requiring the transmission of timing signals to keep PPP peers synchronized in sending and receiving blocks of data.
Page 154 Glossary Cayman 2E-H User’s Guide November 2000...
Page 155 CLI 4-16 arp command 4-5 ARP table 5-4 ARP, proxy 4-23, 4-31 authentication trap 3-29, 4-39 autoboot command B-7 back panel, Cayman 2E-H 1-4 bandwidth shaping 1-2 boot command B-5 bootp command B-8 bridging 4-19, C-2 broadcast address 4-22, 4-30...
Page 156 DHCP relay-agent lease 4-10 Diagnose utility 1-2, 5-9 diagnostic console B-1 diagnostic log 4-7, 4-10, 4-11, 5-2 diagnostic log level 4-41 disconnecting your Cayman 2E-H 2-5 DNS 4-21 Index domain name 3-12, 4-21 domain name server 3-12 Domain Name System (DNS) 4-21...
Page 157 3-15 LAN port 1-4 lease 4-10 lease time 3-16, 4-20 power 1-3 WAN 1-3 Cayman 2E-H User’s Guide November 2000 line display 4-38 Local Area Network (LAN) 1-2 location, SNMP 4-39, 4-40 log 4-11, 5-2 log command 4-7...
Page 158 4-41 set system name command 4-40 set system password command 4-41 set trafficshape commands 4-42 setup.exe program 6-3 show bridge interfaces 4-10 show bridge table 4-10 show command B-7 show crash 4-10 Cayman 2E-H User’s Guide November 2000...
Page 159 3-28 system contact, SNMP 4-39, 4-40 system diagnostics 4-41 system location 3-29 system name 3-11, 3-12, 3-14, 4-40 system password 4-41 Cayman 2E-H User’s Guide November 2000 technical specifications A-1 Telnet 3-24, 4-1, 4-31 telnet command 4-12 Telnet traffic 4-38...
Page 160 Index Cayman 2E-H User’s Guide November 2000...

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