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Bay Networks CLAM Reference Manual

Nortel nautica clam network bridge: reference manual
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CLAM B
RIDGE
R
M
EFERENCE
ANUAL
Issue 3.0
I
3.0
MAN-CLAM-BRIDGE-REF
SSUE

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  • Page 1 CLAM B RIDGE EFERENCE ANUAL Issue 3.0 MAN-CLAM-BRIDGE-REF SSUE...
  • Page 2 The information contained in this manual is believed to be accurate, however, no responsibility is assumed by Bay Networks for its use, nor for any infringements of patents or other rights of third parties resulting from its use. All trademarks are acknowledged. MAN-CLAM-BRIDGE-REF SSUE...
  • Page 3 Ó 1996 Scorpion Logic Ltd. A Bay Networks company MAN-CLAM-BRIDGE-REF SSUE...

  • Page 4: R Eference

    All CLAM Bridge-specific management menus and forms, configuration parameters, status and statistical information are described in detail in this Chapter. Chapter 3 - Utilities This chapter provides a description of some features of the CLAM which may be helpful in troubleshooting. MAN-CLAM-BRIDGE-REF SSUE...
  • Page 5 When two or more keys are to be pressed simultaneously, the convention of a plus sign between the characters is used, e.g. <CTRL>+E indicates that the control key should be held down while the E character is entered. MAN-CLAM-BRIDGE-REF SSUE...

  • Page 6: Table Of Contents

    ONTENTS Section...Page ...1-1 NTRODUCTION 1.1 Overview ...1-1 1.2 The CLAM Platform ...1-1 1.3 ISDN Autocall Bandwidth on Demand ...1-2 1.4 Protocol Bridging and Spoofing ...1-2 1.5 Simple Installation and Management ...1-3 1.6 Security...1-3 1.7 Summary of Features ...1-4 2. R ...2-1...
  • Page 7 Section ... Page 2.6.4 ISDN Call Statistics...2-62 2.6.4.1 ISDN Call History ...2-63 2.6.5 Hublet Statistics...2-63 2.6.6 TCP/IP Statistics...2-64 2.7 Connect to Remote Devices ...2-65 3. E NGINEERING 3.1 Configuration Default...3-1 3.2 Unit Reboot...3-1 3.3 Configuration Dump...3-1 3.4 Configuration Load...3-2 3.5 Software Version ...3-2 3.6 Trace Window...3-2 3.7 ISDN Clearing Codes ...3-4 3.8 Faultfinding TCP/IP Networks...3-6...
  • Page 8 ONTENTS List of Figures...Page Figure 2.1 Main Menu Screen...2-7 Figure 2.2 Configuration Menu Screen ...2-8 Figure 2.3 System Parameter Form...2-9 Figure 2.4 Ports List Screen ...2-11 Figure 2.5 LAN Port Configuration Form ...2-13 Figure 2.6 TA Port Configuration Form ...2-14 Figure 2.7 Bridge Configuration Screen...2-18 Figure 2.8 Spanning Tree Configuration Screen ...2-19 Figure 2.9 Filter Table Addresses Screen ...2-21...
  • Page 9 ONTENTS List of Tables... Page Table 2.1 Control Character Actions ...2-2 Table 2.2 Common Ethernet Types ...2-28 Table 2.3 Common IEEE Types ...2-28 Table 3.1 Network Clearing Codes ...3-4 Table 3.2 Internal Clearing Codes ...3-5 Issue 3.0...
  • Page 10 ONTENTS Issue 3.0...

  • Page 11: Introduction

    RISC technology, while the integral CLAM Bridge processor uses 32bit-wide pipelined architecture. Both components are tightly bound together, providing extremely low latency. These factors make the CLAM probably the most powerful unit of its size. Figure 1.1 The CLAM Platform VERVIEW...

  • Page 12: Isdn Autocall Bandwidth On Demand

    Autocalls can use Top-Up-On-Demand to establish multiple ISDN links if needed due to high link utilisation. CLAM Bridge supports TCP/IP, OSI, IPX and Banyan Network addressing; all other protocols use MAC address autocalls.

  • Page 13: Simple Installation And Management

    Calling Line Identification (CLI) is supported, which ensures incoming ISDN calling numbers are checked before access is granted. The CLAM Bridge has a second layer of security, based on the encoded MAC address of the calling bridge. If this address is incorrect, the remote unit will be unable to send or receive data.

  • Page 14: Summary Of Features

    UMMARY OF ISDN Interface · Basic Rate ISDN 2B+D, providing 2 x 64Kbps data channels and a 16 Kbps signalling channel via an ‘S/T’ interface · Separately dialled ISDN numbers · ISDN connection cable included Bandwidth Aggregation · 2 ISDN B-channels may be configured to a particular destination, providing a combined bandwidth of 128Kbps Data Compression ·...

  • Page 15: Overview

    Optional Expansion Module The CLAM Bridge has an expansion slot that allows you to install the following optional expansion module: · An analogue voice module, providing a PSTN interface to support conventional analogue devices Optional Analogue Voice Module · Provides a single RJ-11 interface ·...
  • Page 16 VERVIEW...
  • Page 17 EFERENCE VERVIEW Following is an overview of the terminal menu trees and associated forms, then each of the CLAM Bridge's management screens is explained in detail. For installation and basic operation instructions, please see the CLAM Bridge EZ START G...

  • Page 18: Control Character Actions

    EFERENCE ONTROL HARACTER The table below lists the control characters (<CTRL>+key) accepted by the system, and their actions when used in a Menu or Form. Control Action in Char Turn VT100/Televideo Terminal Mode ON or OFF In a variable list menu, moves to the previous page.

  • Page 19: Manager Terminal Menu Tree

    ANAGER ERMINAL The menu tree below shows the hierarchical relationship of the menus and forms and parameters in the system. You can type more than one command at a time to move through the menus quickly and find screens easily, e.g. CONF BRID STP<RETURN>...
  • Page 20 EFERENCE # Line Speed ...2-15 # Data Compression...2-15 # Dial Timeout ...2-15 # ATZ String...2-15 # Demand ...2-15 # Bandwidth on Demand Threshold...2-15 # Bandwidth on Demand Threshold Dial-up Period...2-16 # Idle Threshold...2-16 # Bandwidth on Demand Clear-Down Period...2-16 # Demand Priority...2-17 # Subaddress ...2-17 # SPID...2-17 # Local Number ...2-17...
  • Page 21 # Learn Banyan...2-32 # Strip Novell RIP & SAP...2-32 # pcANYWHERE over IPX...2-32 # MS WINS Server...2-33 ISDN Configuration (CONF ISDN)...2-34 Bridge Authorisation (CONF ISDN AUTH) ...2-35 # Other Bridge Address...2-35 ISDN Automatic Call Addresses (CONF ISDN AUTO)...2-36 # Type ...2-40 # Address - MAC Format ...2-41 # Address - ARP/IP Format...2-41 # Address - Novell IPX Format...2-41...
  • Page 22 EFERENCE Status and Statistics Monitor (STAT)...2-54 Port Statistics (STAT PORT)...2-55 Ethernet Port Statistics (STAT PORT EXAM [LAN Port No]) ...2-56 Serial ISDN Interface Status and Statistics (STAT PORT EXAM [Serial Port No])...2-58 Bridge Statistics (STAT BRID)...2-59 Spanning Tree Statistics (STAT STP)...2-62 ISDN Call Statistics (STAT ISDN) ...2-64 ISDN Call History (STAT ISDN HIST)...2-65 Hublet Statistics (STAT HUBL)...2-65...

  • Page 23: Main Menu

    N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ CONF STATS REMOTE QUIT ________________________________________________________________________________ ________________________________________________________________________________ Enter command : Figure 2.1 CONF Provides access to the configuration facilities within the management system STATS Gives access to the status and statistical information maintained by the unit. REMOTE Accesses the Remote Connect feature, allowing you to connect to other TCP/IP Telnet devices on the network.

  • Page 24: Configuration

    Resets the CLAM Bridge's current configuration back to the default factory settings. If you select this menu item, you will be asked to confirm that you want the change to take place: “ERASE (Y/N) ?”. The CLAM Bridge will reboot automatically after this command. SYSTEM...

  • Page 25: System Management

    The standard TCP/IP interface address of the unit. It is used ADDRESS to access the local management system (Telnet and SNMP) for the unit over the network. CLAM SYSTEM PARAMETERS System Parameter Form EFERENCE ^G - Main Menu ^L - Prev Menu...

  • Page 26: Password

    After this time (in seconds), if there has been no input from TIMEOUT the manager terminal, the manager session will be closed. This timeout takes effect only for new management sessions. TIME SINCE How long since the CLAM Bridge was last rebooted (in REBOOT hours:minutes:seconds). 2-10 Default:...

  • Page 27: Port Management

    2.5.2 ANAGEMENT N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Name [LAN1 LAN Port No. 1 ISDN1 TA Link 1 ISDN2 TA Link 2 EDIT - Edit Port TYPE - Change Port Type _________________________________________________________________________________ _________________________________________________________________________________ (co po) Enter command : Figure 2.4 This screen provides an overview of the current operational status of the ports on the system.

  • Page 28: Name

    A user-friendly name that can be configured by the user for easier referencing of the port. TYPE The CLAM Bridge has two types of interface: Ethernet or ISDN. The TYPE command is only available on this screen if the port type can be changed: the Ethernet port type is set automatically and cannot be changed.

  • Page 29: Lan Ports

    2.5.2.1 LAN Ports N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Port Number Port Name STP Priority Line Speed(bits/s): 10000000 ________________________________________________________________________________ ^E - Submit ________________________________________________________________________________ Figure 2.5 PORT The port number in the system. It is generated automatically NUMBER by the system and cannot be configured.

  • Page 30: Ta Ports

    EFERENCE 2.5.2.2 TA Ports N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Port Number :ISDN1 Port Name :TA Link 1 STP Priority :128 Compression :ENABLED Line Speed :64000 Dial Timeout ATZ string :AT^M SPID Local Number ________________________________________________________________________________ ^E - Submit ________________________________________________________________________________ Figure 2.6 Note: for units fitted with EURO-ISDN interface modules, the parameters SPID, LOCAL NUMBER and SWITCH TYPE (described below) are not displayed and have no effect.

  • Page 31: Line Speed

    10 seconds would be adequate, but for international calls this may need to be extended. ATZ STRING When a call is dropped, the CLAM Bridge sends this string to re-initialise the TA. Leave this as AT^M for the internal...

  • Page 32: Idle Threshold

    EFERENCE Each time this threshold is reached, additional bandwidth will be requested. This means that a link can request multiple connections to the same destination to add bandwidth. Multicast and Broadcast frames are not included in loading calculations, so additional bandwidth will not be dialled up due to these frame types.

  • Page 33: Demand Priority

    DEMAND Dial-up connections can be used to provide bandwidth on PRIORITY demand. This parameter determines the priority of this port when using a Dial-up circuit for additional bandwidth. If an Autocall is set to “bumpable”, it will always be bumped by a new call, if there are no spare ISDN ports available.

  • Page 34: Switch Type

    EFERENCE SWITCH The switch type used at the telephone company’s local central TYPE office (select an option by pressing the <space> bar) should be entered here only if ISDN interface modules with North American ISDN support are installed. See the booklet Ordering and Configuring for North American ISDN Services for more details.

  • Page 35: Bridge Configuration

    2.5.3 RIDGE ONFIGURATION N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Spanning Tree Configuration ADDRESS Address Filter Table TYPE Type Filter Table PARAM Filtering Parameters _________________________________________________________________________________ ________________________________________________________________________________ (co br) Enter command : Figure 2.7 Access the configurable Spanning Tree parameters form. ADDRESS Display/enter Address Filter Table options and commands.

  • Page 36: Spanning Tree Management

    STA resolves the network topology to ensure that where physical loops exist, then certain links are disabled to create a single path through the network. Only when primary links fail will the disabled links be brought into service. N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Protocol...

  • Page 37: Maximum Age

    PROTOCOL Specifies if the Spanning Tree Algorithm (IEEE 802.1D) is to operate. If Protocol is set to NONE, then other STP parameters have no operational effect. HELLO TIME This determines the time interval in seconds between HELLO messages issued by the Root Bridge in a network. The value of this parameter can be set, but the Hello Time used by the Root Bridge will be taken as the current value to use.

  • Page 38: Address Filter Table

    EFERENCE 2.5.3.2 Address Filter Table The Address Filter Table is at the core of the CLAM Bridge functions. It is the primary mechanism for accepting or rejecting packets to be routed through the bridge. The Address Filter Table contains a list of source and destination MAC address pairs and the route to use to forward packets to the destination.
  • Page 39 SOURCE The source MAC address or name. See notes for Destination above. By learning both the source and destination addresses, the CLAM Bridge will know the route to the source as soon as that source starts to transmit. EFERENCE 2-23...
  • Page 40 EFERENCE ROUTE This is the route being used to send frames to their destination. If the route is the LAN interface, this field contains LAN1 (the automatically generated name of the interface). If the route is one of the ISDN interfaces, the route will be the name of the Nautica series Bridge at the other end of the ISDN link.
  • Page 41 DELete Allows entries in the filter table to be deleted. The entry [param] under the cursor bar will be deleted when this command is input with no parameters. Specific entries to be deleted can be chosen by entering a parameter which may include a wildcard, e.g. 21* will delete all entries with a destination address beginning with 21.

  • Page 42: Add Filter Table Entry

    This screen allows you to add a permanent source and destination address pair to the filter table. The bridge filters packets passing between the pair, based on the settings of the Filter Table General Parameters (see below). N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________...

  • Page 43: Type Filters

    2.5.3.4 Type Filters N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Format Type Action on Match IEEE 0x00 Ethernet 0xXXXX EDIT - Edit Filter ADD - Add filter ________________________________________________________________________________ ________________________________________________________________________________ (co br ty) Enter command : Figure 2.11 Filter format: IEEE 802.2 or Ethernet 2 (DIX).
  • Page 44 EFERENCE Protocol Prioritisation means that Expedited Protocols have priority over any other protocols transported by the CLAM Bridge. This ensures that one or more user data streams are not slowed down by other data streams that take a lot of bandwidth.
  • Page 45 Type Description (Hex) 0800 DOD IP 0806 0807 XNS Compatibility 0888-088A Xyplex 0A00 Xerox IEEE 802.3 PUP 0BAD Banyan Systems 6001 DEC MOP Dump/Load 6002 DEC MOP Remote Console 6003 DEC DECNET Phase IV Route 6004 DEC LAT 6005 DEC Diagnostic Protocol 6006 DEC Customer Protocol 6007...

  • Page 46: Filter Table General Parameters

    EFERENCE 2.5.3.5 Filter Table General Parameters N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Ageing Time(Sec) Learning Action on Match Filter Multicast Type Matching Unmatched Type Action : Learn Src on Multicast: Learn Novell 802.3 Learn Novell Ethernet2: Learn Novell 802.2 Learn Banyan Strip Novell RIP/SAP...

  • Page 47: Action On Match

    ACTION ON Specifies if frames that match Permanent entries in the MATCH Address Filter Table are FORWARDed to the outgoing port or REJECTed. FORWARD Note: this parameter does not apply to Learned addresses, which are always forwarded. If FORWARD is set, any frame received which matches a filter table entry is FORWARDed to the destination port.
  • Page 48 EFERENCE LEARN SRC Specifies whether the bridge will "learn" the source address of a device if it transmits a Broadcast or Multicast packet. MULTICAST ENABLE lets the bridge learn where a device is before any other device needs to transmit to it. Once an entry is made in the filter table with Multicast packets, no more destination and source address pair matching entries will be created.

  • Page 49: Ms Wins Server

    MS WINS ENABLE means that the bridge acts as a local Windows for Server Workgroups Name server, running TCP/IP protocol. EFERENCE 2-33...

  • Page 50: Isdn Configuration

    Show, add or delete entries in the Calling Line Identity List of remote ISDN numbers authorised to dial into this CLAM Bridge. Your PTT supplier can provide the ISDN number of the calling unit, which the CLAM Bridge uses to enable or disable access. WINS Show, edit, add or delete entries in the list of MS-Windows servers on the network supporting the TCP-32 protocol.

  • Page 51: Bridge Authorisation

    To prevent this, it is possible to set up a list of bridges which are authorised to connect to the network. When this list contains at least one entry, the CLAM Bridge will only interwork with the bridges whose Ethernet addresses appear in the list.

  • Page 52: Isdn Automatic Call Addresses

    By initially setting up a manual ISDN call between each remote bridge and the central bridge, the CLAM or other Nautica series Bridges can learn the locations of the servers and routers on the network. After the manual connection is cleared, these bridges act as Novell server or router "agents"...
  • Page 53 The full procedure for configuring IPX support is as follows: Configure the general parameters (Unit Name, Unit IP Address, etc). In the ISDN Numbers table of each Nautica series Bridge, define the name and ISDN number of every remote Nautica series Bridge to be connected.
  • Page 54 EFERENCE ScaNet OSI Name Service Support CLAM and other Nautica series Bridges support the ScaNet product range OSI Name Service protocol requests, in a similar manner to Novell IPX support. OSI names and associated ISDN numbers of remote bridges where those "names"...
  • Page 55 N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Type Address 00C0C2123456 ARP/IP 123.56.78.1/32 IPX_SAP Server1 IPX_RIP !00000002 IPX_RIP 98765432 IPX_WS 004321012345 ScaNet Mail_Service EDIT - Edit ADD - Add DEL - Delete _________________________________________________________________________________ ________________________________________________________________________________ (co isdn auto) Enter command : Figure 2.15 N.CLAM.mmm SYSTEM NAME...

  • Page 56: Type

    EFERENCE TYPE This specifies the type of entry. TCP/IP: the type is set to TCP/IP. Novell IPX IPX_RIP (Routing Information Protocol): entry for a router IPX_SAP (Service Advertising Protocol): entry for a server IPX_WS (IPX_Workstation): entry for a workstation. IPX_RIP and IPX_SAP can be autoconfigured by the "remote"...
  • Page 57 ADDRESS Any frame arriving with a destination MAC address which matches the entry's MAC address will initiate an ISDN call to the number specified in the entry. ARP/IP Format: [!]xxx.xxx.xxx.xxx/n Where: [!] - if present, the call is made if the address is not matched. xxx.xxx.xxx.xxx - the IP Address or the subnet address.
  • Page 58 EFERENCE ! (IPX_RIP) nnnnnnnn mmmmmmmmmmmm ssss name IPX_WS (IPX Workstation) Format: XXXXXXXXXXXX The MAC address of the workstation. This entry is needed only if a server is to be allowed to bring up an ISDN connection to the workstation. Connections are normally initiated and maintained through actions by the workstation.
  • Page 59 Typically, an automatically learned Novell server will consist of three autocall entries: an IPX_SAP for the service details, an IPX_RIP for connecting to the service, and an IPX_RIP with the address prefixed with a ! for controlling the autocall and spoofing. For example, a file server called Main_Server could create the following entries;...

  • Page 60: Remote Unit Name

    EFERENCE ScaNet Name of an OSI service available over an ISDN-only connection. BANYAN These addresses are generated automatically and should not be edited. REMOTE Destination bridge name as defined in the “COnf ISDN UNIT NAME NUMbers” table. The names must match exactly the names configured in the remote bridges themselves.

  • Page 61: Ipx Service Type

    IPX SERVICE For IPX_SAP entries, this field defines the service provided TYPE at this Address, e.g. File Server, Print Server. These numbers are defined by Novell Inc. Typical entries are; 0004 - file server 0278 - directory server (Netware Directory Services) 0047 - advertising print server Applies only to IPX autocalls.

  • Page 62: Isdn Numbers And Manual Calls

    ISDN number needed to reach it. The name can then be used by the CLAM Bridge itself to auto-configure certain information (see, for example, Novell IPX Autocalls). Also, once the ISDN number of a remote bridge has been configured in the local CLAM Bridge, a manual connection can be made to it. N.CLAM.mmm...
  • Page 63 ISDN NUMBER The numbers to be dialled to reach the destination. If more than one number is entered, the CLAM Bridge will rotate through the numbers automatically when making calls. Manual calls can be made using the manager terminal command from anywhere in the manager, e.g.

  • Page 64: Calling Line Identification

    CLI table, then CLI is enabled automatically. Note: in the CLI information presented to the CLAM Bridge by your PTT, the area code is usually added before the number, even if the call is a local one.

  • Page 65: Tcp-32 Wins

    IP Addresses of Windows NT servers or Windows for Workgroups PCs. Names on the local subnet can be learned, whereas remote names must be entered manually. The CLAM Bridge can act as a local WINS server, providing information locally (i.e. without bringing up the ISDN line) for Windows users on the local subnet.

  • Page 66: Description

    EFERENCE N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Name : Sleepy Description : Sales Server IP Address : 192.0.2.11 Group Address : Specific Entry Type : Static _______________________________________________________________________________ ________________________________________________________________________________ Figure 2.21 NAME Name of the resource (server or workstation). A name must be unique within a domain.

  • Page 67: Snmp Management

    If you intend to make use of SNMP to manage the CLAM Bridge, you need to ensure that the management station you are using has the appropriate Management Information Bases (MIBs) installed.

  • Page 68: Unit Name

    EFERENCE VERSION Unit version number, generated automatically by the system for information only. It cannot be configured manually. DESCRIPTION Unit description, generated automatically by the system. It cannot be configured manually. NAME Unit name, used for reference purposes. This name appears in the screen title region, and can be changed via the SYSTEM configuration screen.

  • Page 69: Remote Trap Address

    REMOTE When the unit detects events which it wishes to send to a TRAP ADDR remote SNMP management station, it will send them to this IP address. Set this address to 0.0.0.0 to disable TRAP generation. REMOTE Specifies the UDP (User Datagram Protocol) port which TRAP PORT will receive any TRAPs issued by the unit.

  • Page 70: Status And Statistics Monitor

    EFERENCE TATUS AND TATISTICS The CLAM Bridge provides a wide range of status and statistical information, used both to analyse unit and network performance and to diagnose faults. These statistics are accessed via the main screen shown below. N.CLAM.mmm SYSTEM NAME...

  • Page 71: Ports Statistics

    TATISTICS All interfaces (physical or logical, serial or parallel, LAN or WAN) on the CLAM Bridge are known as ports. This screen shows an overview of the ports present on the unit, their utilisation and current state. More status and statistical information is available by selecting the port with the help of the cursor keys, then entering the EXAMine command.

  • Page 72: Ethernet Port Statistics

    EFERENCE 2.6.1.1 Ethernet Port Statistics N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Ethernet Address :002062xxxxxx Total Tx Octets Total Tx Packets Total Tx Multicasts :0 Total Tx Broadcasts :0 Total Tx Errors Total Rx Octets Total Rx Packets Total Rx Multicasts :0 Total Rx Broadcasts :0...
  • Page 73 The statistics on the right of the screen give a detailed list of errors by error type. Low error counts are to be expected, but if the error counts are higher than usual, this could indicate a problem with the LAN segment to which the CLAM Bridge is connected. 2-57...

  • Page 74: Isdn Interface Status And Statistics

    EFERENCE 2.6.1.2 ISDN Interface Status and Statistics N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Total Tx Octets Total Tx Packets :0 Total Tx Errors Tx Signals :CTL Total Rx Octets Total Rx Packets :0 Total Rx Errors Rx Signals :IND ________________________________________________________________________________ ________________________________________________________________________________ ( stat port exam ) Enter command : Figure 2.26...

  • Page 75: Bridge Statistics

    2.6.2 RIDGE TATISTICS N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Link No. STA State InFrames listening 1234567890 1234567890 forwarding 9876543210 7654321098 STP - Spanning Tree Stats ________________________________________________________________________________ ________________________________________________________________________________ (st br) Enter command : Figure 2.27 Link No. Link number (generated automatically for each entry).

  • Page 76: Link Spanning Tree Status

    EFERENCE 2.6.2.1 Link Spanning Tree Status N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ Link No. Priority State :forwarding Enabled :enabled Path Cost :15625 ________________________________________________________________________________ ________________________________________________________________________________ (st br stp) Enter command : Figure 2.28 Link No. Link number (generated automatically). Priority Priority of this link.
  • Page 77 Designated Bridge Bridge on the local network which handles the Designated Link (see below). Designated Link Link used to forward frames to the Root Bridge from the local network. Fwd Transitions Number of times the link has changed from the forwarding state.

  • Page 78: Spanning Tree Statistics

    EFERENCE 2.6.3 PANNING N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ TimeSinceTopologyChange : 12345 TopologyChangeCount DesignatedRoot RootCost RootPort MaxAge HelloTime ForwardDelay LearnedEntryDiscards MultilinkOverrun ________________________________________________________________________________ ________________________________________________________________________________ (stat stp) Enter command : Figure 2.29 Time Since Time (in seconds) since the bridge took part in a change Topology Change in the network topology.
  • Page 79 Maximum Age Current maximum age for received Spanning Tree Protocol frames to be treated as valid before being discarded. Hello Time Current time interval at which hello messages should be received from the Root Bridge. Forward Delay Current forwarding delay. Learned Entry Number of learned addresses which were discarded when Discards...

  • Page 80: Isdn Call Statistics

    EFERENCE 2.6.4 ISDN C The CLAM Bridge holds status and statistical information about ISDN calls. Information on previous calls is explained in the ISDN Call History section. Current ISDN connections are shown on the screen below. Current calls can be cancelled by selecting the required item and typing CANCEL.

  • Page 81: Isdn Call History

    Total number of successful calls made to Destination. Failed Calls Total number of unsuccessful calls made to Destination. 2.6.5 UBLET TATISTICS Not currently available for the CLAM. ISDN CALL HISTORY TotalTime Good Calls 00:12:32 00:01:12 ISDN Total Channel Statistics Screen EFERENCE Page No.

  • Page 82: Tcp/Ip Statistics

    EFERENCE 2.6.6 TCP/IP S This menu option provides some basic SNMP MIB information about the TCP/IP operation of the CLAM. TCP/IP is mainly used with Telnet, so the CLAM can be remotely managed. N.CLAM.mmm SYSTEM NAME ________________________________________________________________________________ CONN SNMP IFACE...

  • Page 83: Connect To Remote Devices

    EMOTE The Remote Connect facility enables you to connect to another device which supports TCP/IP Telnet. If the other device is a CLAM or other Nautica series Bridge, then its name, IP address and MAC address appear in a list from which it can be selected and connected to.
  • Page 84 EFERENCE Relevant Commands There are various ways to select a remote bridge: 1. REM <name><RETURN> 2. REM <IP Addr (port)><RETURN> 3. REM<RETURN> (with remote unit highlighted using the cursor keys) When connected to the remote bridge, typing QUIT terminates the remote bridge manager session and returns to the previous manager session.

  • Page 85: Engineering Utilities

    3. E NGINEERING TILITIES This chapter provides a description of the command line utilities and procedures, as well as a faultfinding guide to various CLAM Bridge problems. 3.1 C ONFIGURATION EFAULT The current SAVEd configuration can be defaulted by typing CO STD from any menu.

  • Page 86: Configuration Load

    TILITIES 3.4 C ONFIGURATION Provided that the stored configuration file is compatible, it may be loaded back into this or another unit. Type LCONFIG from any menu and when prompted, send the file to the unit as an ASCII file transfer. When the configuration file has been loaded into EPROM successfully, the unit will reboot itself automatically with the new configuration.

  • Page 87: Figure 3.1 Trace Window Screen (Example)

    The second column in the Trace Window is the Trace Record number. If the numbers are not in unbroken sequence, then some Trace messages have been lost due to the CLAM Bridge being too busy. The third column is a time stamp (number of milliseconds since the CLAM Bridge was last rebooted).

  • Page 88: Isdn Clearing Codes

    TILITIES 3.7 ISDN C LEARING Table 3.1 below lists the ISDN call clearing codes returned by the network; these may vary depending on your service provider. Reason Undefined Unallocated (Unassigned Number) No Route specified transit network No route to destination Channel Unacceptable Channel Unacceptable Call awarded and being delivered in an established channel...

  • Page 89: Table 3.1 Network Clearing Codes

    Recovery on timer expiry Internetworking unspecified Table 3.1 Network Clearing Codes Table 3.2 below lists the internal ISDN call clearing codes generated by the Nautica BRI Terminal Adapter. Reason 128-143 Call control timer expiry Data link failure TEI or SPID (USA) negotiation failure Network access not connected Call clearing due to restart procedure Table 3.2 Internal Clearing Codes...

  • Page 90: Faultfinding Tcp/Ip Networks

    TILITIES 3.8 F TCP/IP N AULTFINDING To confirm that basic operation is correct, make a manual call and attempt to connect to a remote host. If this fails, then there is a general network problem, as at this stage the two networks are transparently joined together. The faultfinding process in a TCP/IP network is made easier by the fact that most TCP/IP terminal devices (hosts) contain a ‘ping’...

  • Page 91: Faultfinding Ipx Networks

    TILITIES 3.9 F IPX N AULTFINDING ETWORKS To confirm that basic operation is correct, make a manual call and attempt to connect to a server. If this fails, then there is a general network problem, as at this stage the two networks are transparently joined together. IPX connections are established by first requesting a server with the Service Advertising Protocol (SAP), then requesting its location with the Routing Information Protocol (RIP).

  • Page 92: Faultfinding Basic Rate Isdn

    STAT ISDN. Then type CALL [number] where [number] is the ISDN phone number of the CLAM’s ISDN line that you are trying to test. If you have given a different local number to each ‘B’ channel, use the one you configured under ISDN2 (if you use the one configured under ISDN1, you will get a busy signal, clearing code 17).

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