Page 1 CoreBuilder 5000 ™ ® Token Ring Media Modules User Guide http://www.3com.com/ Document Number 17-00513-4 Published May 1997...
Page 2 95052-8145 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change. 3Com Corporation provides this documentation without warranty of any kind, either implied or expressed, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Page 3 NS/G/12345/J/100003 for indirect connection to the public telecommunication network. Trademarks Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries. 3Com, Boundary Routing, CardFacts, EtherLink, LANplex, LANsentry, LinkBuilder, NETBuilder, NETBuilder II, NetFacts, Parallel Tasking, SmartAgent, TokenDisk, TokenLink, Transcend, TriChannel, and ViewBuilder are registered trademarks of 3Com Corporation.
Page 4 SPARCstation is a trademark licensed exclusively to Sun Microsystems Inc. OPEN LOOK is a registered trademark of Unix System Laboratories, Inc. UNIX is a registered trademark of X/Open Company, Ltd. in the United States and other countries. Other brand and product names may be registered trademarks or trademarks of their respective holders.
Page 5: Table Of Contents
Structure of This Guide Document Conventions Related Documents 3Com Documents Reference Documents NTRODUCTION CoreBuilder 5000 Token Ring Module Features Port Switching Module Switching Automatic Ring Speed Detection Active Port Retiming and Jitter Reduction Reducing Internal (CoreBuilder 5000) Jitter Reducing External (Non-CoreBuilder 5000) Jitter...
Page 6 ESIGNING AND XPANDING THE ETWORK Building a CoreBuilder 5000 Token Ring Network Additional Configuration Information Determining the Maximum Number of Stations on a Ring Selecting Appropriate Cable Lengths Calculating Cable Lengths (Copper Wiring) Additional Cable and Lobe Length Recommendations Maximum Attenuation...
Page 7 NSTALLING THE ODULE Precautionary Procedures Quick Installation Unpacking Procedures Module Overview Using Network Monitor Cards Setting the DIP Switches Setting the Lobe/Trunk Jumper (6218M-ATPP and 6218M-ATP) Installing Optional Daughter Cards 3-10 Installing a Token Ring Network Monitor Card 3-10 Installing a Token Ring Jitter Attenuator Card 3-12 Installing the Module 3-14...
Page 8 Using the Show Port Command 4-15 Monitoring the Front Panel 4-16 LED and Network Verification 4-17 Using the CoreBuilder 5000 Controller Module to Verify LED Operation 4-17 Using the DMM to Verify Network Connections 4-18 Where to Go From Here...
Page 9 ECHNICAL UPPORT Online Technical Services World Wide Web Site 3Com Bulletin Board Service Access by Analog Modem Access by Digital Modem 3ComFacts Automated Fax Service 3ComForum on CompuServe Online Service Support From Your Network Supplier Support From 3Com Corporation Returning Products for Repair...
Page 11 3-1 CoreBuilder 5000 Token Ring Module DIP Switch Locations 3-2 Active Per-Port Module and Active Per-Module Switching Module Jumper Setting 3-3 Location of CoreBuilder 5000 Token Ring Network Monitor Cards 3-11 3-4 Installing a CoreBuilder 5000 Token Ring Jitter Attenuator Card...
Page 13 ABLES 2-1 Building a CoreBuilder 5000 Token Ring Network 2-2 Maximum Station Counts 2-3 Maximum Lobe Lengths (in Meters) 2-4 STP Network Cable Specifications 2-5 UTP Level 3 Cable Specifications 2-6 UTP Level 4 Cable Specifications 2-7 UTP Level 5 Cable Specifications...
Page 15: How To Use This Guide
OW TO UIDE This guide explains how to install and operate the 3Com ™ CoreBuilder 5000 Token Ring Media Modules. This guide includes information on managing the module using a CoreBuilder 5000 Distributed Management Module (DMM). It also describes the Jitter Attenuator Card, which helps stabilize trunk (Ring-In/Ring-Out) connections to non-CoreBuilder 5000 rings.
Page 16: Structure Of This Guide
System Hub and the CoreBuilder 5000 Token Ring Modules. Chapter 3, Installing the Module – Provides illustrated procedures for installing CoreBuilder 5000 Token Ring Media Modules into the CoreBuilder 5000 Integrated System Hub. Chapter 4, Configuring the Module – Describes the network management commands used to configure the modules.
Page 17: Document Conventions
Alerts you to... Information note Important features or instructions Caution Risk of personal safety, system damage, or loss of data Warning Risk of severe personal injury Related Documents This section provides information on supporting documentation, including: 3Com Documents Reference Documents...
Page 18: 3Com Documents
CoreBuilder 5000 Integrated System Hub Installation and Operation Guide – Provides information on the installation, operation, and configuration of the CoreBuilder 5000 Integrated System Hub. This guide also describes the principal features of the CoreBuilder 5000 Fault-Tolerant Controller Module. Distributed Management Module User Guide – Provides information on the CoreBuilder 5000 Distributed Management Module’s operation,...
Page 19: Introduction
System Hub Installation and Operation Guide. The chapter contains the following sections: CoreBuilder 5000 Token Ring Module Features CoreBuilder 5000 Token Ring Modules CoreBuilder 5000 This section describes the following CoreBuilder 5000 Token Ring Media Token Ring Module features: Module Features Port Switching...
Page 20: Module Switching
Module Switching CoreBuilder 5000 Token Ring per-module switching modules can be switched on a per-module basis to any of 10 CoreBuilder 5000 backplane rings or to one isolated ring. Internal management features such as automatic ring speed detection ensure that newly-inserted modules do not disrupt ring operation.
Page 21: Reducing Internal (Corebuilder 5000) Jitter
Reducing Internal (CoreBuilder 5000) Jitter To minimize jitter and increase the number of stations allowed on each ring, each CoreBuilder 5000 Token Ring active port incorporates Dual Phase-Locked Loop (DPLL) circuitry. Dual PLL minimizes accumulated jitter and phase slope on the ring, and increases the number of attached stations to 250 (190 at 4 Mbps) on each ring.
Page 22: Automatic Beacon Recovery
NTRODUCTION Automatic Beacon CoreBuilder 5000 Token Rings Media Modules are equipped with: Recovery Automatic, hardware-based beacon recovery on each module. Beacon Recovery allows the modules to remove beaconing stations from both backplane (hub-wide) and isolated (module-level) rings. Beacon recovery software and the CoreBuilder 5000 Beacon Recovery ASIC, which aids in the removal of beaconing stations.
Page 23: Active Per-Port Switching Media Module (6218M-Atpp)
Simultaneous 4 and 16 Mbps Token Ring networks, when switched to the appropriate ring speed Can be switched on a per-port basis to any of 10 CoreBuilder 5000 backplane rings or 11 isolated rings Accepts one optional Jitter Attenuation Card, for use with the...
Page 24: Corebuilder 5000 Active Per-Port Switching Media Module
NTRODUCTION Figure 1-1 illustrates the CoreBuilder 5000 Token Ring Active Per-Port Switching Media Module. LED panel Actively-retimed lobe ports Ports 17 and 18 configurable as Ring-In/Ring-Out ports Figure 1-1 CoreBuilder 5000 Active Per-Port Switching Media Module...
Page 25: Active Per-Module Switching Media Module (6218M-Atp)
Support for either 4 or 16 Mbps Token Ring networks Can be switched on a per-module basis to any of ten CoreBuilder 5000 backplane rings or to the one isolated ring Accepts one optional Jitter Attenuation Card, for use with the...
Page 26: Ring Mapping On The Apm When Trunks Are Configured
MAC-less device. The address map information for the other modules on the same network is accurate. If you use fanout or MAC-less devices on an APM with trunks enabled, 3Com recommends that you insert the fanout and MAC-less device at the...
Page 27: Corebuilder 5000 Active Per-Module Switching Media Module
CoreBuilder 5000 Token Ring Modules Figure 1-2 illustrates the CoreBuilder 5000 Token Ring Active Per-Module Switching Media Module. LED panel Actively-retimed lobe ports Ports 17 and 18 configurable as Ring-In/Ring-Out ports Figure 1-2 CoreBuilder 5000 Active Per-Module Switching Media Module...
Page 28: Passive Media Module (6220M-Tp)
1-10 NTRODUCTION Passive Media The CoreBuilder 5000 Token Ring Passive Media Module is a single-slot Module (6220M-TP) module that provides 20 lobe ports per module, or up to 320 users per hub, with as many as 250 users on the same network ring.
Page 29: Corebuilder 5000 Token Ring Passive Media Module
CoreBuilder 5000 Token Ring Modules 1-11 Figure 1-3 illustrates the CoreBuilder 5000 Token Ring Passive Media Module. LED panel Passive media ports Figure 1-3 CoreBuilder 5000 Token Ring Passive Media Module...
Page 30: Dual Fiber Repeater Module (6210M-Dfr)
1-12 NTRODUCTION Dual Fiber Repeater The CoreBuilder 5000 Token Ring Dual Fiber Repeater (DFR) Module is a Module (6210M-DFR) 10-port, single-slot module that supports two sets of fully repeated fiber Ring-In/Ring-Out ports. Using the CoreBuilder 5000 hub in a collapsed backbone, each DFR Module can collapse two rings from remote locations into the central hub.
Page 31: Corebuilder 5000 Token Ring Dual Fiber Repeater Module
CoreBuilder 5000 Token Ring Modules 1-13 Figure 1-4 illustrates the CoreBuilder 5000 Token Ring Dual Fiber Repeater Module. MODULE STATUS LED panel Actively-retimed lobe ports Fiber Ring-In/Ring-Out ports Figure 1-4 CoreBuilder 5000 Token Ring Dual Fiber Repeater Module...
Page 32: Jitter Attenuator Card (6200D-Ja)
Jitter Reduction on page 1-2 for more information). The card has the following features: Ensures the integrity of CoreBuilder 5000 Token Ring networks by eliminating jitter from non-CoreBuilder 5000 device signals. Allows the connection to other non-CoreBuilder 5000 rings where jitter, or Phase Slope, may have built up to unacceptable levels.
Page 33: Designing And Expanding The Network
5000-based Token Ring network. Use the information in this chapter as a guide to plan your network. This chapter contains the following sections: Building a CoreBuilder 5000 Token Ring Network Determining the Maximum Number of Stations on a Ring Selecting Appropriate Cable Lengths...
Page 34: Building A Corebuilder 5000 Token Ring Network
ESIGNING AND XPANDING THE ETWORK Building a Table 2-1 lists general rules for building a CoreBuilder 5000 Token Ring CoreBuilder 5000 network. Token Ring Network Table 2-1 Building a CoreBuilder 5000 Token Ring Network Rule Definition Recommendation/Notes Understand your Understand the network you are developing network.
Page 35: Additional Configuration Information
Building a CoreBuilder 5000 Token Ring Network Table 2-1 Building a CoreBuilder 5000 Token Ring Network (continued) Rule Definition Recommendation/Notes Determine the This guide lists the recommended maximum lobe maximum lobe and and trunk cable lengths in Selecting Appropriate trunk cable lengths Cable Lengths on page 2-4.
Page 36: Determining The Maximum Number Of Stations On A Ring
Active Ports Passive Ports 4 Mbps UTP/STP 16 Mbps UTP/STP Selecting This section describes the cable lengths for CoreBuilder 5000 Token Appropriate Cable Ring Media Modules. It is divided into the following sections: Lengths Calculating Cable Lengths (Copper Wiring) Cabling Standards...
Page 37: Additional Cable And Lobe Length Recommendations
19 dB in any configuration. The channel is the transmission path from the medium interface connector (MIC) of one transmitter to the MIC of the next receiver in line. 3Com uses 19 dB as the maximum channel attenuation when computing cable lengths.
Page 38: Temperature
Planning and Installation Guide Customer Premises Cabling to Support Attachment of ISO 88025 Token Ring Stations 3Com supports these cabling practices and recommends customers follow these guidelines. Cable lengths listed in this chapter are valid only with cables as defined...
Page 39: Lobe Cabling Requirements
Selecting Appropriate Cable Lengths Table 2-3 Maximum Lobe Lengths (in Meters) Ring Speed UTP Level 5 UTP Level 4 UTP Level 3 Active (A)/ Passive (P) 4 Mbps 16 Mbps * With the exception of the 190 stations, which should be reduced if there are more than 25 stations with lobe lengths approaching 800 meters.
Page 40: Utp/Levels 3, 4, And 5 Lobe Cables
–44 dB 120 ohm (Screened Twisted Pair) Lobe Cables 3Com supports 120 ohm cable, often called screened twisted pair, using cable lengths recommended for Level 4 UTP cabling. When using 120 ohm wire, use only 120 ohm patch cables with 120 ohm "in the wall"...
Page 41: Connection Hardware
Connector hardware is specified in SP-2840: Commercial Building Telecommunications Cabling Standard (ANSI/TIA/EIA) and EIA/TIA TSB-40. 3Com Trunk Cable CoreBuilder 5000 Token Ring products have either copper or fiber trunk Recommendations (Ring-In/Ring-Out) ports. This section lists trunk cabling requirements for:...
Page 42: Determining Fiber Cable Lengths Using Alternate Fiber Diameters
2-10 ESIGNING AND XPANDING THE ETWORK The fiber must comply with the specifications listed in Table 2-9 with ANSI/EIA/TIA - 492AAAA. You can use cables of this type up to 2 km long. Table 2-9 Multimode Fiber Specifications Maximum Maximum into Transmission Capacity Wavelength Attenuation (MHz-km)
Page 43: Using Media Filters
Using Media Filters 2-11 Using Media Filters 3Com Token Ring products do not require media filters. You may, however, need to use a media filter when attaching a DTE device, only when the installed cable’s impedance does not match the Network Interface Card’s (NIC) impedance.
Page 44: Configuration Examples
3 The backbone ring extends through the riser of the building through the CoreBuilder 5000 Dual Fiber Repeater Modules. In the traditional backbone ring scenario, the CoreBuilder 5000 Dual Fiber Repeater Modules are interconnected through their Ring-In/Ring-Out ports. The following conditions exist: All Repeater Modules are assigned to the same backplane ring or are set to isolated mode.
Page 45 Configuration Examples 2-13 Figure 2-1 illustrates a backbone ring connecting three CoreBuilder 5000 hubs on different floors of a building. A A A A A A A A A A Bridge A A AA AA AA AA A A A...
Page 46: Collapsed Backbone Configuration
Figure 2-2 illustrates the following configuration: 1 A master CoreBuilder 5000 hub is located in the central computer room on floor 1 of a 3-story building. 2 The CoreBuilder 5000 hubs on floors 2 and 3 both contain...
Page 47: Collapsed Backbone Configuration
Configuration Examples 2-15 A description of each ring assignment follows Figure 2-2. TR-NMC TR-NMC TR-NMC = Installed Daughter Cards TR-NMC T-JIT A A A Ring 1 A A A A A Floor 3 AA AA A AA A A A A A AA AA AA A A T-JIT TR-NMC Ring 2...
Page 48: Ring 1 Description
The end nodes on Ring 1 attach to Active Per Port Switching Modules in the floor 3 hub. The following is a list of assignments for Ring 1: Each port on Ring 1 is assigned to the CoreBuilder 5000 hub’s backplane Token Ring 1 network.
Page 49: Devices Internetworked In The Master Hub
Token Ring LAN. Dual Fiber Repeater Modules provide main trunk connectivity between distant CoreBuilder 5000 hubs. Figure 2-3 shows an extended ring that spans several hubs in a building. The Token Ring Passive Media Modules in each hub on floor 1 and floor 2 are configured on the same backplane ring (in this case, all modules are assigned to Ring 1).
Page 50: Where To Go From Here
Single Extended Ring Configuration Where to Go From Once you complete this chapter, proceed to Chapter 3. Chapter 3, Here Installing the Module, describes installation procedures for CoreBuilder 5000 Token Ring Media Modules and optional daughter cards and how to set DIP switches.
Page 51: Nstalling The
For your convenience, a module reference card is included with each module. These cards list management commands, LED indicators, and other module information. Store this card in the CoreBuilder 5000 Integrated System Hub binder in the Reference Card area. This chapter contains the following topics:...
Page 52: Quick Installation
Quick Installation Table 3-1 outlines the steps necessary to complete the installation of your module. If you are familiar with installing CoreBuilder 5000 modules, use this table as a checklist. Otherwise, consult the remainder of this chapter. Table 3-1...
Page 53: Unpacking Procedures
Verify LED status for normal operation. Chapter 4, LED and Network Verification Refer to the CoreBuilder 5000 Integrated System Hub Installation and Operation Guide for more details on hub power requirements. For information about potential problems, consult the troubleshooting techniques in...
Page 54: Module Overview
Using Network Monitor Cards The CoreBuilder 5000 scalable network management architecture enables users to add a CoreBuilder 5000 Token Ring Network Monitor Card (TR NMC) to the module. This card enables users to achieve SNMP network connectivity and gather network statistics for any of the CoreBuilder 5000 Token Ring backplane networks, as well as for any individual isolated (module-level) network.
Page 55: Setting The Dip Switches
It is not possible to use the DIP switches on Token Ring Media Modules to assign individual ports to different networks. If you do not have a CoreBuilder 5000 network management module installed in your hub, your hub’s configuration defaults to the DIP switch settings on the module.
Page 56: Corebuilder 5000 Token Ring Module Dip Switch Locations
NSTALLING THE ODULE switch Active Per-Port Switching Module Dual Fiber Repeater Module switch Passive Module Active Per-Module Switching Module Figure 3-1 CoreBuilder 5000 Token Ring Module DIP Switch Locations...
Page 57: Network Select Dip Switch Settings
Setting the DIP Switches Table 3-2 Table 3-3 describe the DIP switch settings as follows: Table 3-2 describes the switches used for selecting a default network connection. Switches 1 through 4 enable users to configure all ports for one of the backplane segments (token_ring_1 through token_ring_10) or as a module-level ring (isolated).
Page 58: Dip Switch Setting, Switches 5 Through
NSTALLING THE ODULE Table 3-3 DIP Switch Setting, Switches 5 through 8 Switch Number Definition ON configures modules from NVRAM. OFF configures the module from DIP settings. By default, Switch 5 is set to ON. ON disables the Passive Media Module’s speed detection algorithm. Not Used by other Token Ring Media Modules.
Page 59: Setting The Lobe/Trunk Jumper (6218M-Atpp And 6218M-Atp)
Setting the Lobe/Trunk Jumper (6218M-ATPP and 6218M-ATP) Setting the On-board jumpers determine whether ports 17 and 18 on the module Lobe/Trunk Jumper are lobe ports or Ring-In/Ring-Out ports. Setting the jumper to the: (6218M-ATPP and Left – Selects Ring-In/Ring-Out 6218M-ATP) Right –...
Page 60: Installing Optional Daughter Cards
Token Ring Jitter Attenuator – Removes jitter coming into the CoreBuilder 5000 hub. Installing a Token To install a TR NMC on a CoreBuilder 5000 Token Ring Media Module Ring Network (Figure 3-3):...
Page 61: Location Of Corebuilder 5000 Token Ring Network Monitor Cards
Installing Optional Daughter Cards 3-11 Connector Network Dual Fiber Repeater Module Monitor Active Per-Port Switching Module Card Orientation Connector Passive Module Active Per-Module Switching Module Figure 3-3 Location of CoreBuilder 5000 Token Ring Network Monitor Cards...
Page 62: Installing A Token Ring Jitter Attenuator Card
Token Ring Network Monitor Card connectors. To install a Jitter Attenuator Card on a CoreBuilder 5000 Token Ring Media Module: 1 Match the card’s connector pins to the corresponding pins on the host CoreBuilder 5000 Token Ring Media Module.
Page 63: Installing A Corebuilder 5000 Token Ring Jitter Attenuator Card
Connector Connector Jitter Attenuator Active Per-Port Switching Module Dual Fiber Repeater Module Card Orientation (relative to Standoffs the standoffs Connector connector) Standoffs Connector Passive Module Active Per-Module Switching Module Figure 3-4 Installing a CoreBuilder 5000 Token Ring Jitter Attenuator Card...
Page 64: Installing The Module
NSTALLING THE ODULE Installing the You do not need to power off the CoreBuilder 5000 Integrated System Module Hub to install or remove media modules. You can insert the module while the hub is operating (this is called a hot swap).
Page 65: Installing A Media Module
Installing the Module 3-15 5 Insert (see the arrow in Figure 3-5) the module into the board guides at the top and bottom of the slot and slide it into the hub by pressing firmly at the top and bottom of the faceplate. Figure 3-5 shows the installation of the module.
Page 66: Opened And Closed Module Ejectors
3-16 NSTALLING THE ODULE 6 Close the media module ejectors (Figure 3-6). Closed Opened position position Half-height level Apply pressure here Figure 3-6 Opened and Closed Module Ejectors 7 Fasten the spring-loaded screws on the front of the media module faceplate to the hub using your fingers (do not over-tighten).
Page 67: Copper Lobe Port Connections
Network, for wiring specifications. Copper Ring-In/Ring-Out Trunk Connections When connecting Ring-In/Ring-Out ports to a non-CoreBuilder 5000 ring, for example, ONline System Concentrator, IBM 8230 CAU, install a Jitter Attenuator Daughter Card. To connect Ring-In/Ring-Out ports: 1 Attach one end of the twisted pair cable (STP-type only) to the copper Ring-Out port.
Page 68: Fiber Ring-In/Ring-Out Connections
5 If connecting to an ONline System Concentrator or IBM 8230, issue the SET TRUNK {slot} {RING_IN/RING_OUT} COMPATIBILITY_MODE command from the DMM in the CoreBuilder 5000 hub to ensure compatibility. Where to Go From...
Page 69: Configuring The Module
Showing Module Configurations Monitoring the Front Panel LED and Network Verification For additional information on network management commands described in this section, refer to the CoreBuilder 5000 Distributed Management Module Commands Guide. Configuration CoreBuilder 5000 network management modules provide network...
Page 70: Before You Begin
Enabling Speed Detect (Passive Module Only) Setting Module Speed Threshold (Passive Module Only) For additional information on any network management command described in this section, refer to the CoreBuilder 5000 Distributed Management Commands Guide. Configuring the This section describes network management commands to help you...
Page 71: Setting Network Ring Speed
Configuring the Modules Setting Beacon Threshold Enabling Static Ring Switching Enabling Mismatch Resolution (Passive and Active Per-Module Media Modules Only) Moving Rings from Module-Level to Hub-Level Setting Port Alert Filters Enabling Speed Detect (Passive Module Only) Setting Module Speed Threshold (Passive Module Only) Setting Network Ring Use the SET NETWORK TOKEN_RING RING_SPEED command to set the Speed...
Page 72: Selecting A Network
(collectively) on the module to network 1 through 10 or to an isolated segment. Network management, however, assigns one or more ports to a network. If you have a CoreBuilder 5000 TR NMC, Network Management also assigns the NMC to a network.
Page 73: Enabling Ports
Enabling Beacon Use the SET NETWORK TOKEN_RING BCN_RECOVERY command to Recovery enable or disable the beacon recovery mechanism on a CoreBuilder 5000 network. The default is enabled. The command sequence is: SET NETWORK TOKEN_RING {network} BCN_RECOVERY {mode} Where: network = token_ring_1 - token_ring_10...
Page 74: Setting Beacon Threshold
ONFIGURING THE ODULE Statistics are not accurate on a beaconing ring. To correct this condition, resolve beaconing and then clear all statistics. This is normal operation. Setting Beacon Use the SET MODULE BCN_THRESHOLD to set the number of times Threshold that a phantom transition, caused by a beaconing condition, is allowed to cause a port or trunk to unwrap before the port or trunk is removed from the ring.
Page 75: Enabling Mismatch Resolution
Enable the mismatch resolution algorithm for the specified network. Per-Module Media Modules Only) Perform address-to-port mapping when you use a splitter or fan-out device on a CoreBuilder 5000 Token Ring port. The default is disable. The command sequence is: SET NETWORK TOKEN_RING {network} MISMATCH_RESOLUTION...
Page 76: Moving Rings From Module-Level To Hub-Level
You can implement each of the 10 available token rings on CoreBuilder 5000 port-switching media modules either on a backplane (hub-wide) or an isolated (module-level) network. Use this command to toggle sets of ports between backplane and isolated. You may only toggle rings 1 through 10.
Page 77: Setting Port Alert Filters
AAAA AAAA AAAA AAAA Figure 4-1 CoreBuilder 5000 Token Ring Network Mode Setting Port Alert Use the SET ALERT PORT ALERT_FILTER command to enable or disable Filters port up and port down trap generation for a specific port. This command works in conjunction with the SET ALERT (PORT_UP_DOWN_FILTER) command.
Page 78: Enabling Speed Detect (Passive Module Only)
4-10 ONFIGURING THE ODULE Use the following command to enable or disable the port up and port down trap generation (alerts) for a port: SET PORT { slot.port } ALERT_FILTER {enable} { slot. all} {disable} The following command sets alert filter on port 1 of a module in slot 1: CB5000>...
Page 79: Setting Module Speed Threshold (Passive Module Only)
Only) ring. This command applies to the CoreBuilder 5000 Passive Token Ring Media Module (Model Number 6220M-TP). Use the Set Port Speed Detect command to enable speed detection. The default is 7.
Page 80: Trunk Enable
{isolated_1..._11} Trunk Compatibility Mode Use the SET TRUNK RING_IN/RING_OUT COMPATIBILITY_MODE command to ensure that the signalling used by a CoreBuilder 5000 trunk port is compatible with the trunk port connected at the other end of the copper or fiber cable.
Page 81: Saving The Configuration
SET TRUNK{ slot } ring_in.{1 or 2} COMPATIBILITY_MODE { mode } ring_out.{1 or 2} {slot} = slot containing the trunk port Where: {mode} = disable, enable, CoreBuilder 5000, ONline, 8230, 8260, 8250 Saving the After you make configuration changes to a module and ports, you Configuration must issue the SAVE MODULE_PORT command to save the new settings.
Page 82: Using The Show Module Command
4-14 ONFIGURING THE ODULE Using the Show The SHOW MODULE command enables you to display both brief and Module Command verbose information about a particular module. The command sequence is: SHOW MODULE {slot.subslot} {verbose} { slot. all} {no_verbose} The following output is an example of the SHOW MODULE VERBOSE Example: command issued for a media module installed in slot 10: CB5000>...
Page 83: Using The Show Port Command
Showing Module Configurations 4-15 Using the Show Port The SHOW PORT command enables you to display both brief and Command verbose information on both individual ports and all ports collectively. The command sequence is: SHOW PORT { slot.port } {verbose} { slot.
Page 84: Monitoring The Front Panel
4-16 ONFIGURING THE ODULE Monitoring the The LEDs on the front panel of the media module allow you to monitor Front Panel the status of each port. Each media module has a Status LED for each port. Figure 4-2 shows the location of the LEDs. Each LED indicates the state of a port as described in Table 4-3.
Page 85: Led And Network Verification
For more information on the DMM, refer to the Distributed Management Module User Guide. Using the The CoreBuilder 5000 hub's controller module is equipped with an LED CoreBuilder 5000 Test button on the front panel. Use the LED Test button to verify LED Controller Module operation.
Page 86: Using The Dmm To Verify Network Connections
ONFIGURING THE ODULE Using the DMM to The DMM enables you to verify each network connection (both active and isolated) for all CoreBuilder 5000 modules and NMC cards installed Verify Network Connections in your hub. To initiate the verification process: 1 Press the Display Control Toggle button on the front of the module.
Page 87: Troubleshooting
ROUBLESHOOTING This chapter describes troubleshooting procedures for the ™ CoreBuilder 5000 Token Ring Module. Information on troubleshooting may assist you in verifying the module's operation. This chapter is divided into the following parts: General Troubleshooting Tips Troubleshooting Using the Status LEDs Troubleshooting Ring Problems Trunk Interoperability Problems Technical Assistance...
Page 88: General Troubleshooting Tips
Fiber Ring-In port connects to a fiber Ring-Out port Fiber ports on the module are used to connect only to other CoreBuilder 5000 devices, ONline devices, or to an IBM 8230 Controlled Access Unit (CAU) Jitter Attenuator Card is attached to Ring-In/Ring-Out ports that...
Page 89: Troubleshooting Using The Status Leds
Troubleshooting Using the Status LEDs Troubleshooting In certain situations, the status LEDs may not light. This section Using the Status describes the following: LEDs Troubleshooting Using the Module Status LED Troubleshooting Using the Port Status LEDs Troubleshooting Table 5-1 outlines possible causes and some solutions for Using the Module troubleshooting the Module Status LED.
Page 90: Troubleshooting Using The Port Status Leds
ROUBLESHOOTING Troubleshooting Table 5-2 outlines possible causes and some solutions for Using the Port troubleshooting the Port Status LEDs. A blinking Port Status indicator Status LEDs signals a problem with a port or link connected to a port. Table 5-2 Troubleshooting Using the Port Status LEDs State Indication...
Page 91: Troubleshooting Ring Problems
Troubleshooting Ring Problems Troubleshooting This section provides remedies for problems you could encounter when Ring Problems working with Token Ring Networks. Problems Adding a Problems may arise when using the lobe ports to add a new station to New Station to an an operating ring.
Page 92: Intermittent Errors On An Operating Ring
ROUBLESHOOTING Intermittent Errors An operating ring may experience occasional soft errors. This on an Operating Ring occurrence is normal in Token Ring devices. Usually, these errors are caused by stations removing themselves from and inserting themselves on the ring. A low soft-error level does not affect network performance.
Page 93: Trunk Interoperability Problems
(see Chapter 4 for more information). 2 Install a jitter attenuator card on the CoreBuilder 5000 module if connecting to a non-CoreBuilder 5000 ring. 3 Only connect CoreBuilder 5000 fiber trunks to 3Com ONline System Concentrator, 3Com CoreBuilder 5000 hub, IBM 8250 hub, IBM 8260 hub, or IBM 8230 CAU trunk ports.
Page 94: Technical Assistance
ROUBLESHOOTING Technical You can receive assistance for installing and troubleshooting the Token Assistance Ring Media Module by calling either your 3Com reseller or 3Com Technical Support. Be prepared to supply a representative with the following information: Description of the problem...
Page 95: Pecifications
PECIFICATIONS This appendix lists specifications for the Token Ring Media Modules. The module specifications included are: Token Ring Active Per-Port Switching Media Module Specifications Token Ring Active Per-Module Switching Media Module Specifications Token Ring Dual Fiber Repeater Module Specifications Token Ring Passive Media Module Specifications Token Ring Jitter Attenuator Card Specifications Twisted Pair (Copper) Connector Pinouts Active Per-Port and Active Per-Module Media Module Ring-In Port...
Page 96: Token Ring Dual Fiber Repeater Module Specifications
PECIFICATIONS Token Ring Active Per-Module Data Rate 4 and 16 Mbps Switching Media Connectors Shielded RJ-45 (pinout appears later in this Module appendix) Specifications Cable Requirements Supports UTP, STP, and 120 ohm Cabling Systems Power Requirements 28 w +5 V DC, 0.5 w +12 V DC Mechanical Occupies 1 Slot Daughter Card Support...
Page 97: Token Ring Passive Media Module Specifications
Token Ring Passive Media Module Specifications Fiber Transmitter Light Source: LED at wavelength 850 nm Transmit Power: -13 to -19 dBm average Fiber Receiver Light Detector: Silicon PIN photodiode Input Range: Optical power input of -12 to -28 dBm Dynamic Range: 16 dBm Bit Error Rate: 1 in 10 over dynamic range Fiber Connectors...
Page 98: Twisted Pair (Copper) Connector Pinouts
PECIFICATIONS Twisted Pair You must use the IEEE 802.5 Token Ring standard for pinouts. The (Copper) following cable standard must be used for an 8-pin connector. Token Connector Pinouts Ring uses 2 pairs of wire: pins 3 & 6 and pins 4 & 5 (see Figure A-1).
Page 99: Pinout
Active Per-Port and Active Per-Module Media Module Ring-In Port Adapter Pinout Active Per-Port and Active Per-Module Media Module Ring-In You do not need to refer to this wiring diagram if you use cable Port Adapter adapter 6200ADT-RI. Pinout Use the wiring diagram below (Figure A-2) to create a device that imitates the function the optional ring-in port adapter when you do...
Page 101: B Technical Support
3Com provides access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix is correct at time of publication. For the very latest, access 3Com Corporation’s World Wide Web site as described below. This appendix describes:...
Page 102: World Wide Web Site
ECHNICAL UPPORT World Wide Web Site Access the latest networking information on 3Com Corporation’s World Wide Web site by entering our URL into your Internet browser: http://www.3Com.com/ This service features news and information about 3Com products, customer service and support, 3Com Corporation’s latest news releases, NetAge Magazine, and more.
Page 103: 3Comfacts Automated Fax Service
, provides data Automated Fax sheets, technical articles, diagrams, and troubleshooting instructions on Service 3Com products 24 hours a day, 7 days a week. Call 3ComFacts using your Touch-Tone telephone using one of these international access numbers: Country Telephone Number...
Page 104: Support From Your Network Supplier
Support From Your If additional assistance is required, contact your network supplier. Network Supplier Several suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services.
Page 105: Support From 3Com Corporation
If you are unable to receive support from your network supplier, 3Com Corporation technical support contracts are available from 3Com. Contact your local 3Com sales office to locate your authorized service provider using one of the following numbers: Regional Sales Office...
Page 106: Returning Products For Repair
ECHNICAL UPPORT Returning Products Before you send a product directly to 3Com for repair, you must first for Repair obtain a Return Materials Authorization (RMA) number. Products sent to 3Com without RMA numbers are returned to the sender unopened, at the sender’s expense.
Page 107: Contacting 3Com Technical Publications
Contacting 3Com Technical Publications Contacting 3Com If you have comments or questions on 3Com Technical Publications Technical documents, contact the Technical Publications group by fax at Publications (508) 229-1551. 02/06/97...
Page 109 NDEX CompuServe Numerics Configuration media module 120 Ohm cable specifications Configuration commands 3Com Bulletin Board Service (3ComBBS) assign module 3Com sales offices assign ports 3Com URL enable ports 3ComFacts enable static ring switching 3ComForum set network ring speed 8-pin connector...
Page 110 LEDs 4-17 Media module LEDs interpreting 4-17 Media modules listed Medium Interface Connector (MIC) How to unpack module MIBs 3Com Mismatch resolution Module configurations Installation saving 4-13 hot swap capabilities 3-14 4-13 showing 3-15, 3-16 installing the module...
Page 111 PLL (Phase-Locked Loop) Port 4-12 1-2, 2-4 active passive retiming Technical Assistance Port switching technical support Ports 3Com URL assigning bulletin board service configuring fax service 4-12 connecting trunk ports network suppliers enabling product repair using CompuServe Token Ring Active Per-Module Switching Media...
Page 112 NDEX Verification LEDs 4-17 4-17 network assignments Wiring copper in the wall World Wide Web...
Page 113 For purposes of this warranty, the CoreBuilder 5000 Token Ring Media Module is considered an Internetworking product. ARDWARE 3Com warrants its hardware products to be free from defects in workmanship and materials, under normal use and service, for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller: Internetworking products...
Page 114 IMITATION OF IABILITY TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE...

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