Page 1 Nautica CLAM Bridge Reference Guide Part No. 302975-A Rev.00 May 1998...
Page 2: Restricted Rights Legend
4401 Great America Parkway Santa Clara, CA 95054 Copyright © 1998 Bay Networks, Inc. All rights reserved. Printed in the USA. May 1998. The information in this document is subject to change without notice. The statements, configurations, technical data, and recommendations in this document are believed to be accurate and reliable, but are presented without express or implied warranty.
Page 3 name of the University may not be used to endorse or promote products derived from such portions of the software without specific prior written permission. SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED “AS IS” AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Page 4 Nautica CLAM Bridge Reference Guide Licensee’s facility, provided they have agreed to use the Software only in accordance with the terms of this license. 3. Limited warranty. Bay Networks warrants each item of Software, as delivered by Bay Networks and properly installed and operated on Bay Networks hardware or other...
Page 5 restrictions set forth in subparagraph (c)(1) of the Commercial Computer Software––Restricted Rights clause of FAR 52.227-19 and the limitations set out in this license for civilian agencies, and subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause of DFARS 252.227-7013, for agencies of the Department of Defense or their successors, whichever is applicable.
Page 6 Nautica CLAM Bridge Reference Guide UNLESS BAY NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT, INCLUDING AN EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT. 302975-A Rev.00...
Page 7: About This Guide
If you are responsible for configuring Nautica routers, you need to read this guide. You can now use the Bay Command Console (BCC) to configure Nautica routers. In this guide, you will find instructions for using the BCC. The guide also mentions other software systems used by Nautica routers including Nautica Wizard and Nautica Manager.
Page 8: Conventions
Nautica CLAM Bridge Reference Guide Conventions angle brackets (< >) bold text brackets ([ ]) ellipsis points italic text quotation marks (“ ”) screen text viii Indicate that you choose the text to enter based on the description inside the brackets. Do not type the brackets when entering the command.
Page 9 vertical line ( Acronyms BACP BootP CHAP DADS DHCP HDLC ISDN 302975-A Rev.00 Indicates that you enter only one of the parts of the command. The vertical line separates choices. Do not type the vertical line when entering the command. Example: If the command syntax is show -s config either...
Page 10 Nautica CLAM Bridge Reference Guide OSPF PPTP PSTN SNMP TCP/IP Telnet TFTP WINS Multisubscriber Numbering Minimum To Configure Minimum To Distinguish Network Address Translation Open Shortest Path First (Protocol) Password Authentication Protocol Point-to-Point Protocol Point to Point Tunneling Protocol Public Switched Telephone Network...
Page 11: Bay Networks Technical Publications
Bay Networks Technical Publications You can now print technical manuals and release notes free, directly from the Internet. Go to support.baynetworks.com/ library/tpubs. Find the Bay Networks products for which you need documentation. Then locate the specific category and model or version for your hardware or software product. Using Adobe Acrobat Reader, you can open the manuals and release notes, search for the sections you need, and print them on most standard printers.
Page 12: How To Get Help
Nautica CLAM Bridge Reference Guide How to Get Help If you purchased a service contract for your Bay Networks product from a distributor or authorized reseller, contact the technical support staff for that distributor or reseller for assistance. If you purchased a Bay Networks service program, call one of the...
Page 13: Bay Networks Educational Services
Bay Networks Educational Services Through Bay Networks Educational Services, you can attend classes and purchase CDs, videos, and computer-based training programs about Bay Networks products. Training programs can take place at your site or at a Bay Networks location. For more information about training programs, call one of the following numbers: Region...
Page 15: Table Of Contents
How to Get Help ...xii Bay Networks Educational Services ... xiii Chapter 1 Understanding Bridging The CLAM Platform ... 1-2 ISDN Autocall Bandwidth on Demand ... 1-2 Protocol Routing And Spoofing ... 1-2 Simple Installation And Management ... 1-3 Security ... 1-3 Summary Of Features ...
Page 16 Chapter 2 REFERENCE Main Menu ... 2-2 Configuration ... 2-3 System Management ... 2-4 Port Management ... 2-6 LAN Ports ... 2-8 TA Ports ... 2-9 HDLC Ports ... 2-13 PPP Ports ... 2-18 BRIDGE CONFIGURATION ... 2-19 Spanning Tree Management ... 2-20 Address Filter Table ...
Page 17 Spanning Tree Statistics ... 2-64 ISDN Call Statistics ... 2-66 ISDN Call History ... 2-67 Hublet Statistics ... 2-67 TCP/IP Statistics ... 2-68 Connect to Remote Devices ... 2-69 Chapter 3 Utilities Configuration Default ... 3-2 Unit Reboot ... 3-2 Configuration Dump ...
Page 18 xviii 302975-A Rev.00...
Page 19 Figure 2-1. Main Menu Screen ... 2-2 Figure 2-2. Configuration Menu Screen ... 2-3 Figure 2-3. System Parameter Form ... 2-4 Figure 2-4. Ports List Screen ... 2-6 Figure 2-5. LAN Port Configuration Form ... 2-8 Figure 2-6. TA Port Configuration Form ... 2-9 Figure 2-7.
Page 20 Figure 2-27. Bridge Link Statistics ... 2-62 Figure 2-28. Link Spanning Tree Status Screen ... 2-63 Figure 2-29. Spanning Tree Statistics Screen ... 2-64 Figure 2-30. ISDN Current Call Statistics Screen ... 2-66 Figure 2-31. ISDN Total Channel Statistics Screen ... 2-67 Figure 2-32.
Page 21 Table 2-1. Common Ethernet Types ... 2-27 Table 2-2. Common IEEE Types ... 2-27 302975-A Rev.00 Tables...
Page 22 xxii 302975-A Rev.00...
Page 23: Understanding Bridging
The CLAM Bridge is the latest in a new generation of internetworking systems which specifically addresses the new needs of modern Networking. It allows home or small office users users to take advantage of the latest technology, combined with ISDN services to provide economic, effective and resilient network solutions in today’s LAN environment.
Page 24: The Clam Platform
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. ISDN Autocall Bandwidth on Demand The CLAM Bridge can be configured to establish ISDN calls...
Page 25: Simple Installation And Management
Line Identification (CLI) is supported, which ensuress 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 26: Summary Of Features
Nautica CLAM Bridge Reference Guide Summary Of Features ISDN Interface • Basic Rate ISDN 2b+d, providing 2 X 64kBPS data channels and a 16Kbps signalling channel via an’S/T’ interface • Separately dialled ISDN numbers • ISDN connection cable included Bandwidth Aggregation •...
Page 27: Additional Modules
This option is not available in all territories, please consult your supplier. Additional Modules 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...
Page 28 Nautica CLAM Bridge Reference Guide 302975-A Rev.00...
Page 29: Reference
This chapter outlines all the features within the CLAM bridge and how they should be configured. The chapter includes the following sections: • Main Menu • Configuration • Status and Statistics Monitor • Connect to Remote Devices 302975-A Rev.00 REFERENCE...
Page 30: Main Menu
Nautica CLAM Bridge Reference Guide Main Menu N.CLAM.mmm SYSTEM NAME Enter command: Figure 2-1. Main Menu Screen CONF: Provides access to the configuration facilities within the management system STATS: Gives access to the status and statistical informaion maintained by the unit.
Page 31: Configuration
Configuration N.CLAM.mmm SYSTEM NAME (co) Enter command: Figure 2-2. Configuration Menu Screen STD: Resets the CLAM Bridge’s current configuration back to the default factory settings. SYSTEM: all product variants: unit name, manager password, time since reboot, etc. PORTS: parameters. BRIDGE: features.
Page 32: System Management
Nautica CLAM Bridge Reference Guide System Management N.CLAM.mmm SYSTEM NAME Ethernet Address Unit Name Unit IP Address Old Password New Password ReType Password Idle Timeout (sec) Time Since Reboot : 4:45:19 ^E - Submit Figure 2-3. System Parameter Form ETHERNET ADDRESS: This is the unit’s unique base Ethernet address, which is configured into the unit hardware at the time of manufacture and cannot be changed manually.
Page 33 REFERENCE UNIT IP ADDRESS: The standard TCP/IP interface address of the unit. It is used as the default for IP Routing to access the local management system (Telnet and SNMP) for the unit over the network. OLD PASSWORD: When changing the password, the current password must first be entered in this field.
Page 34: Port Management
Nautica CLAM Bridge Reference Guide Port Management N.MAR.mmm SYSTEM NAME Name Type LAN1 LAN Port No. 1 Ethernet [WAN1 HDLC Link 1 Bridge HDLC X.21 ISDN1 TA Link 1 Bridge TA ISDN2 TA Link 2 Bridge TA EDIT - Edit Port...
Page 35 Note: selected. If a CLAM WAN is installed in the unit it is automatically detected and the port is displayed in addition to any other ports in the unit. NO.: A unique name or identifier for the port on the unit. This is generated automatically by the system, based on the hardware configuration of the unit, and cannot be changed manually.
Page 36: Lan Ports
Nautica CLAM Bridge Reference Guide LZC(/): Provides an indication of the current compression ratio being achieved on the links when Lempel-Ziv data compression is enabled. STATE: Indicates the current state of the port. If a TA port is not connected to ISDN, its state is DOWN.
Page 37: Ta Ports
TA Ports N.MAR.mmm SYSTEM NAME Edit HDLC Port Port Number Port Name STP Priority Line Speed (bits/s) Compression Dial Timeout ATZ String SPID Local Number ^E - Submit Figure 2-6. TA Port Configuration Form Note: parameters SPID, LOCAL NUMBER and SWITCH TYPE (described below) are not displayed and have not effect.
Page 38 For local calls, 10 seconds would be adequate, but for international calls this may need to be extended. ATZ STRING: When a call is dropped, the CLAM Brdige sends this string to re-initialise the TA. Leave this at AT^M for the internal TA.
Page 39 REFERENCE DEMAND THRESHOLD: This item specifies the percentage loading on the link which must be reached over a period of time before dialled-up bandwidth is requested (see Demand Period below). Each time this threshold is reached, additional bandwidth will be requested.
Page 40 Nautica CLAM Bridge Reference Guide DEMAND PRIORITY: Dial-up connections can be used to provide bandwidth on 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 41: Hdlc Ports
LINE SPEED (bits/s): This parameter should be set to the actual line speed that the interface is being clocked at. Although the CLAM Bridge does not generate clocks (other than a fixed 19.2 Kbps V.24 clock) this parameter is used to configure internal timers which optimise use of the link.
Page 42 Nautica CLAM Bridge Reference Guide COMPRESSION: Data compression can increase the effective bandwidth of the port typically between 2 and 8 times. The degree of compresssion that can be achieved dpends largely on the format of the data being transferred and the speed of the link.
Page 43 NON-EXP.DATA means that when Demand Threshold values are met (see below), packets defined as NON-expedited in the Type Filter Table wil be sent by the first additional link dialled up. NON-EXP+BKUP means that when Demand Threshold values are met (see below), packets defined as NON-expedited in the Type Filter Table will be sent by the first additional link dialled up.
Page 44 Nautica CLAM Bridge Reference Guide Multicast and Broadcast frames are not included in loading calculations, so additional bandwidth will not be dialled up due to these frame types. DEMAND PERIOD: The period (in seconds) over which bandwidth utilisation is measurd to determine whether the Demand Threshold has been exceeded.
Page 45 REFERENCE The original port may have requested the backup circuit for backup or for additional bandwidth. Therefore, it is possible to establish a priority heirarchy for ports which may be using backup circuits for either reason. The higher the number, the higher the priority.
Page 46: Ppp Ports
Nautica CLAM Bridge Reference Guide PPP Ports N.CLAM.mmm SYSTEM NAME Edit PPP Port Port Number Port Name STP Priority Line Speed (bits/s) ^E - Submit Figure 2-8. PPP Port Configuration Form Please refer to the HDLC Ports screen and parameter descriptions above for details.
Page 47: Bridge Configuration
BRIDGE CONFIGURATION N.MAR.mmm SYSTEM NAME ADDRESS - Address Filter Table PARAM (co br) Enter command: STP: (page parameters. ADDRESS: access filter table commands. TYPE: PARAM: ARP: SAP: (page 302975-A Rev.00 Bridge Configuration STP - Spanning Tree Configuration TYPE - Type Filter Table - Filtering Parameters ARP - Static ARP Table SAP - Static SAP Table...
Page 48: Spanning Tree Management
Only when primary links fail will the disabled links be brought into service. N.CLAM.mmm SYSTEM NAME Spanning Tree Parameters Protocol Hello Time (sec)
Page 49: Address Filter Table
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.
Page 50 Nautica CLAM Bridge Reference Guide The CLAM Bridge itself generates frames when operating normally. Such frames are used as part of its process of communication with other bridges on the network. These frames appear in the filter table, but can be ignored.
Page 51 REFERENCE DESTINATION: The destination MAC address or, if the CALM Bridge has determined that the destination is another Nautica series Bridge, it will display the destination’s name. Any frame received will have its destination address compared with this field in the Address Filter Table. The action taken when a match is or is not found is determined by the Action on Match parameter - see Filter Table Parameters below.
Page 52 Nautica CLAM Bridge Reference Guide <CTRL>+N and <CTRL>+B: The two control keys more the display to the next and previous pages respectively. ADd: Add an entry to the filter table. This command will take you to a form (see below) which allows Permanent entries to be configured manually.
Page 53: 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 general filter table parameters 9see below). N.MAR.CLAM SYSTEM NAME Destination Source ^E - Submit DESTINATION: Destination MAC addrress.
Page 54: Type Filters
Nautica CLAM Bridge Reference Guide If Learn source On Multicast is enabled, the filter table works with Destination addresses only and source is left blank. Type Filters N.CLAM.mmm SYSTEM NAME Format IEEE Ethernet EDIT - Edit Filter ADD - Add Filter DELETE - Delete Filter (co br ty) Enter Command: Figure 2-11.
Page 55 ACTION ON MATCH: Action on match is performed only when type Matching is ENABLEd in the Filter parameters form. Options are REJECT (default), FORWARD or EXPEDITE. Table 2-1. Type (Hex) 0800 0806 0807 0888-088A 0A00 0BAD 6001 6002 6003 6004 6005 6006 6007...
Page 56 Type (Hex) 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 57: Filter Table General Parameters
Filter Table General Parameters N.CLAM.mmm SYSTEM NAME Ageing Time Learning Action On Match Filter Multicast Type Matching Unmatched Type Action : Forward Learn Src on Multicast Learn Novell 802.3 Learn Novell Ethernet Learn Novell 802.2 Learn Banyan Strip Novell RIP/SAP...
Page 58 Nautica CLAM Bridge Reference Guide With Learning DISABLEd, the bridge does not add entries to the filter table: only frames from sources already in the table are passed for forwarding. All others are rejected. ACTION ON MATCH: Specifies if frames that match Permanent entries in the Address Filter table are FORWARDed to the ongoing port or REJECTed.
Page 59 REFERENCE REJECT means that if a received packet type is not found in the Type Filter table, the packet is REJECTed. LEARN SRC ON MULTICAST: Specifies whether the bridge will “learn” the source address of a device if it transmits a Broadcast or Multicast packet.
Page 60: Static Arp
Nautica CLAM Bridge Reference Guide However, if this is ENABLEd, the bridge will always spoof the remote network. No Novell RIP or SAP broadcasts are transmitted over the ISDN links. PC Anywhere over IPX: If pcANYWHERE over IPX across the...
Page 61: Sap Filters
MAC Address: The MAC address associated with the IP address. SAP Filters The SAP filter list is obtained by typing CO BR SAP from the command line prompt. N.CLAM.mmm SYSTEM NAME Name Server ADD <name> - Add Filter DELETE - Delete Filter (co br sap) Enter Command: Figure 2-13.
Page 62: Isdn Configuration
Nautica CLAM Bridge Reference Guide It is therefore possible, in a large Novell network, to fill up the Autocall table before the required entries have been learned. By specifying a server/service name in the SAP filter table, only those SAPs and their associated RIP entries will be created in the autocall table.
Page 63 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 ro 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 64: 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 65: Isdn Automatic Call Addresses
ISDN Automatic Call Numbers (autocalls) is a feature for making and controlling ISDN-only connections between Ethernet LANs. The CLAM Bridge can interpret various protocols to determine when it can set up ISDN connections, or clear them down and “spoof” (imitate) the devices using the protocols, to minimise ISDN call costs.
Page 66 Nautica CLAM Bridge Reference Guide By initially setting up a manual ISDN call between a remote site and the central site, the Nautica series Bridges can learn the locations of the servers and routers on the network. After the manual connection is cleared, the Nautica series Bridges act as Novell server or router “agents”...
Page 67 REFERENCE If the Nautica series Bridge is to respond to “get nearest server” requests from a client workstation on behalf of a remote server, add a ! prefix character to the ISDN autocall table entry corresponding to the remote server. Unsolicited information from servers can be used to initiate an ISDN connection to a remote workstation by configuring the workstation address in the server’s local Nautica series Bridge.
Page 68 5 minutes. The Marlin Bridge should learn the topology of the Banyan network in this time, since Routers and Servers broadcast every 2 minutes. When this is done, SAVE the Autocall information. N.CLAM.mmm SYSTEM NAME ISDN Autocall Addresses Type Address 00C0C2123456 ARP/IP 123.56.78.1/32...
Page 69 N.CLAM.mmm SYSTEM NAME Edit ISDN Autocall Address Type Address Remote Unit Name : Bumpable Idle (secs) Idle Threshold IPX Service Type IPX Network Type ^E - Submit Figure 2-17. Add/Edit Entry to Autocall Table TYPE: This specifies the type of entry.
Page 70 Nautica CLAM Bridge Reference Guide ScaNet OSI Name Service: Indicates that a named service (see “Address” below) is available on the remote server accessed via an ISDN connection (see “Remote unit name” below). Banyan Vines: Types are BANYANDEF (default Banyan destination), BANYAN (Banyan server/router), BANYAN_WS or STREETTALK.
Page 71 REFERENCE where: ! (IPX_SAP): This prefix must be added manually to the entry (once it has been learnt) if the bridge is to respond to “get nearest server” requests from local workstations. This is normally used in situations where there is no server on the network connected to the LAN port.
Page 72 Nautica CLAM Bridge Reference Guide 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.
Page 73 REFERENCE ScaNet Name of an OSI service available over an ISDN-only connection. BANYAN These addresses are generated automatically and should not be edited. REMOTE UNIT NAME: Destination bridge name as defined in the “COnf ISDN NUMbers” table. The names must match exactly the names configured in the remote bridges themselves.
Page 74 Nautica CLAM Bridge Reference Guide 0004 - file server 0278 - directory server (Netware Directory Services) 0047 - advertising print server IPX NETWORK TYPE: Applies only to IPX autocalls. Options are 802.3, 802.2 or ETH2 (Ethernet 2). To set up or view an IPX 802.2 type Autocall table, ask to view only 802.2 entries by...
Page 75: Isdn Numbers And Manual Calls
The ISDN Numbers table is used to link the name of a remote Marlin Bridge with the 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).
Page 76: Figure 2-19. Add/Edit Isdn Numbers Screen
Nautica CLAM Bridge Reference Guide N.CLAM.mmm SYSTEM NAME Edit ISDN Numbers Name : London ISDN Number1 : 0716239001 Number2 : 0716239002 Number3 : 0716239003 Number4 : 0716239004 Figure 2-19. Add/Edit ISDN Numbers Screen NAME: The name of the Marlin Bridge which can be dialled up over ISDN using the associated number.
Page 77: Calling Line Identification
CLI table, the 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 78: Figure 2-20. Isdn Cli Screen
For example: ADD 0710000001 adds the entry to the list automatically. CLI is only checked when a call is established, and only operates on incoming calls. N.CLAM.mmm SYSTEM NAME Calling Line Identification Check List 0223123456 0914569876 ADD - Add Number DELETE - Delete Number (co isdn cli) Enter Command: Figure 2-20.
Page 79: Tcp-32 Wins
The 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. N.CLAM.mmm SYSTEM NAME TCP-32 WINS Name List Name Description Grumpy...
Page 80 Nautica CLAM Bridge Reference Guide N.CLAM.mmm SYSTEM NAME TCP-32 WINS Configuration Name : Sleepy Description : Sales Server IP Address : 192.0.2.11 Group Address : Specific Entry Type : Static NAME: Name of the resource (server or workstation). A name must be unique within a domain.
Page 81: Ta List
TA List The TA list is obtained by typing CO IS TA at the command line prompt. N.CLAM.mmm SYSTEM NAME Installed TA List Card Slot Type Base 1 Unknown EDIT - Edit Entry (co isdn ta) Enter Command: Only PRI TAs and North American BRI TAs can be edited as other BRI TAs have no configurable parameters.
Page 82: 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 MIBs (Management Information Base) installed.
Page 83 REFERENCE 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 84 Nautica CLAM Bridge Reference Guide Set this address to 0.0.0.0 to disable TRAP generation. REMOTE TRAP PORT: Specifies the UDP (User Datagram protocol) port which will receive any TRAPs issued by the unit. TCP/IP’s UDP is used to encapsulate SNMP GETs, SETs and TRAPs.
Page 85: Status And Statistics Monitor
Status and Statistics Monitor The CLAM Bridge provides a wide range of status and statistical informaation, 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 86: Ports Statistics
Nautica CLAM Bridge Reference Guide Ports Statistics 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.
Page 87: Ethernet Port Statistics
Ethernet Port Statistics N.CLAM.mmm SYSTEM NAME Ethernet Address : 002062xxxxxx Total Tx Octets Total Tx Packets Total Tx Multicasts Total Tx Broadcasts :0 Total Tx Errors Total Rx Octets Total Rx Packets Total Rx Multicasts Total RX Broadcasts :0 Total Rx Errors (stat port exam) Enter Command: Figure 2-25.
Page 88 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. 2-60...
Page 89: Isdn Interface Statistics
ISDN Interface Statistics N.CLAM.mmm SYSTEM NAME Port Number Total Tx Octets Total Tx Packets Total Tx Errors Transmit Signals : CTL Total Rx Octets Total Rx Packets Total Rx Errors Rx Signals : IND (stat port exam) Enter Command: Figure 2-26.
Page 90: Bridge Statistics
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. Bridge Statistics N.CLAM.mmm SYSTEM NAME...
Page 91: Link Spanning Tree Status
InDiscard: Number of frames received from the link but rejected during address filter table processing. Name: Name of the link. Link Spanning Tree Status N.CLAM.mmm SYSTEM NAME Link No Prioroity State : Forwarding Designated Bridge Enabled : Enabled Path Cost...
Page 92: Spanning Tree Statistics
Designated Link: Link used to forwad frames to the root bridge from the local network. Fwd Transitions: Number of times the link has changed from the forwarding state. Spanning Tree Statistics N.CLAM.mmm SYSTEM NAME Spanning Tree Stats TimeSinceTopologyChange TopologyChangeCount DesignatedRoot RootCost...
Page 93 REFERENCE Time Since Topology Change: Time (in seconds) since the bridge took part in a change in the network topology. Topology Change Count: The number of topology changes since the last time the bridge was reset. Designated Root: Current designated root bridge MAC address. Root Cost: Total cost of the path to the root bridge.
Page 94: Isdn Call Statistics
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. The port currently selected is highlighted and in square brackets [ ]. N.CLAM.mmm SYSTEM NAME ISDN Ports Stats Port Destination [ISDN3...
Page 95: Isdn Call History
Bk: Yes: call made for backup or bandwidth on demand request. Bu: Yes: current call can be bumped. ISDN Call History N.CLAM.mmm SYSTEM NAME ISDN Call History Destination Total Time 0711231234 00:12:32 0923710277 00:01:12 CLEAR - Clear Totals DEL - Delete Record...
Page 96: Tcp/Ip Statistics
TCP/IP Statistics This menu option provides some basic SNMP MIB-II information about the TCP-IP operation of the CLAM Bridge. TCP/IP is mainly used with Telnet, so the CLAM Bridge can be remotely managed. N.MAR.mmm SYSTEM NAME (st tcp) Enter command: Figure 2-32.
Page 97: Connect To Remote Devices
CLAM Bridge then its name, IP address and MAC address appear in a list from which it can be selected and connected to. This list is built up automatically by all CLAM Bridges on the network and does not require any configuration by the user, so it provides a very fast and convenient way to connect to and manage other units on the network.
Page 98 Nautica CLAM Bridge Reference Guide MAC Address: MAC Address of the remote Marlin Bridge. Relevant Commands REM: There are various ways to select a remote Marlin Bridge: 1. REM<name><RETURN> 2. REM <IP Addr (port)><RETURN> 3. REM<return> (with remote unit highlighted using the cursor...
Page 99: Utilities
This chapter provides a description of the command line utilities and procedures, as well as a faultfinding guide to various CLAM Bridge problems. This chapter includes the following sections: • Configuration Default • Unit Reboot • Configuration Dump • Configuration Load •...
Page 100: Configuration Default
Nautica CLAM Bridge Reference Guide Configuration Default The current SAVEd configuration can be defaulted by typing CO STD from any menu. You will be prompted to confirm the action: Y will cause the unit to erase the SAVEd configuration, and reboot with the default configuration.
Page 101: Configuration Load
Configuration Load Provided that the stored configuration file is compatible, it may be loaded back into this or another unit. Type LCONFIG from the 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 102 (0, 14, 22570008) ISDN_PORT: ISDN2 DISC Reason 17 Figure 3-1. Trace Window Screen (Example) In the above example, the CLAM Bridge tries to make an ISDN call to number 123456, but the call fails due to reason 17 (User Busy).
Page 103: Isdn Clearing Codes
Ony one Manager can have the Trace window open at any one time. Note: the Trace Window is not still active. This is especially important for a remotely accessed Trace Window, as the bridge will attempt to forward the Trace Window packets to the unit from which it was originally accessed.
Page 104: Faultfinding Ipx Networks
Nautica CLAM Bridge Reference Guide The next step would be to check that other devices on the local network can be pinged, to make sure that the terminal device is functioning correctly. To check if the bridge has received any packets from the terminal device, the ARP list can be viewed by typing STAT TCP ARP.
Page 105: Faultfinding Basic Rate Isdn
ISDN Port Status screen by typing 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).
Page 106 Nautica CLAM Bridge Reference Guide If all is working well, the ISDN Port Status screen will show both the outgoing and incoming calls made from and to the unit. If there is a problem, the error code sent by the network or generated internally will be displayed against ISDN1.

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