Enterasys (TRMIM-24) Networking Hub
Contents
1. TRMIM 22 TRMIM 24 TRMIM 42 TRMIM 44 EE a i m ET l EF EF BE EE pu x L3 Eas jx x2 as E 3 E RB 3 sO AERE Hi Ji E el ws E EL E TOKEN RING TOKEN RING TOKEN RING Figure 1 1 The TRMIM 22 TRMIM 24 TRMIM 42 and TRMIM 44 Token Ring Concentrator Modules Features of the concentrator module include Number of Connections e TRMIM 22 12 Unshielded RJ 45 ports e TRMIM 42 12 Shielded 45 ports e TRMIM 24 24 Unshielded RJ 45 ports e TRMIM 44 24 Shielded RJ 45 ports Multiple concentrator modules can be installed into an MMAC to increase the number of UTP STP ports available on a token ring network Page 1 3 INTRODUCTION Multiple Concentrator Modules Several concentrator modules can be installed into a single and configured as independent rings or linked together into a single ring network Configuration guidelines can be found in Chapter 3 Installing the Concentrator Module Multiple MMACs in a Ring Network Several MMA2. 22 24 42 44 TOKEN RING MEDIA INTERFACE MODULES INSTALLATION GUIDE CaBICTROTD YSTEMS Complete Networking Solution CABLETRON SYSTEMS P O Box 5005 Rochester NH 03867 0505 Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made The hardware firmware or software described in this manual is subject to change without notice IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES WHATSOEVER INCLUDING BUT NOT LIMITED TO LOST PROFITS ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF KNOWN OR SHOULD HAVE KNOWN THE POSSIBILITY OF SUCH DAMAGES Copyright October 1992 by Cabletron Systems Inc P O Box 5005 Rochester NH 03867 0505 All Rights Reserved Printed in the United States of America Order Number 9030257 02 October 92 FNB Multi Media Access Center Remote LANVIEW and LANVIE W registered trademarks of Cabletron Systems Inc TRRMIM A TRRMIM 2A TRRMIM 4A TRMIM 22 TRMIM 24 TRMIM 42 44 Flexible Network Bus and MMAC are trademarks of Cabletron Systems Inc IBM is a registered trademark of International Bus
3. 5 compliant and compatible with products NOTE Theterm Concentrator Module is used throughout this manual when describing features and functions that are common to the TRMIM 22 TRMIM 24 TRMIM 42 and 44 Theterms TRMI M 22 TRMI M 24 TRMI M 42 and TRMI M 44 are used when it is necessary to describefeatures that areuniqueto any device L1 USING THIS MANUAL Prior to installing and operating your concentrator module read through this manual completely to familiarize yourself with its contents and to gain an understanding of the features of the concentrator module A general working knowledge of Token Ring IEEE 802 5 networks will be helpful when installing your concentrator module Page 1 1 INTRODUCTION Chapter 1 Introduction describes how to use this document provides an overview of the features and capabilities of each concentrator module and concludes with a list of related manuals Chapter 2 Installation Requirements Specifications lists the network requirements that must be met before you begin installing your concentrator module Detailed specifications for each of the concentrator modules is also provided Chapter 3 Installing the Concentrator Module contains instructions for installing a concentrator module into the MMAC and attaching token ring station cabling Chapter 4 Testing and Troubleshooting describes checks that you can perform if you encounter problems after installing a con
4. data connectors see Figure 2 3 Shield Data Connector RJ 45 MIC Orange A TX 6 _ 3 Black TRMIM 42 44 Patch Panel TCU Port LL Red Token Ring pose d Station Figure2 3 STP Adapter Patch Cable PN 9420002 2 3 2 Ring Speed The concentrator module ring speed can be set to either 4 Mbit s or 16 Mbit s The ring speed is automatically set to a default setting at power on The default ring speed can be selected by positioning a network speed jumper on the board Refer to Chapter 3 Installing the Concentrator Module to learn how to set the network speed jumper The default setting can be overridden by changing the ring speed through local or remote network management software 2 3 8 Ring Order When multiple Token Ring boards set to the same ring speed are installed in adjacent slots within an MMAC they can be attached via the FNB tocreate a larger ring network Multiple Token Ring boards are automatically attached when possible at power on but the configuration can be modified via network management software attaching or detaching adjacent boards and as a result changing the ring sequence Page 2 8 REQUIRE MENTS SPECIFICATIONS In anetwork using a concentrator module attached to other Token Ring boards via the FNB the ring order is in slot number order and then port number order within each Token Ring board Example TRMIM 22 in slot 1 with ports 2 5 8 amp 12in use TRMIM 22
5. from the TCU port to the patch panel and from the local wall jack tothe station 6 only go 2 3 the distance of Type 1 Solution 100 meters maximum cable length if only Type 1 cable is used 60 meters of Type 1 40 meters of Type 1 max length 60 meters of Type 1 0 66 x 40 meters of Type 6 max length 26 4 meters of 6 for patch panel and wall jack connections 2 1 2 Cabling Recommendations Crosstalk noise and the number and quality of connections determine reliable data propagation and your network s error rate Crosstalk is interference caused by signal coupling between the different cable pairs contained within a multi pair cable bundle Multi pair cables should not be used for UTP lobe cabling STP lobe cabling should be dedicated to carrying token ring traffic Avoid mixing token ring signals with other applications voice etc within the same cable Noise can be caused by either crosstalk or externally induced impulses If noise induced errors are suspected it may be necessary tore route cabling away from potential noise sources motors switching equipment fluorescent lighting high amperage equipment or to ensure that the electrical wiring in the area is properly wired and grounded Page 2 5 REQUIRE MENTS SPECIFICATIONS In addition to complying with the preceding cable specifications the following recommendations should be followed to minimize errors and h
6. in slot 2 with ports 1 5 7 11 amp 12 in use An FNB is installed the Ring order for this example is Slot 1 ports 2 5 8 12 out to the FNB then to Slot 2 ports 1 5 7 11 12 out tothe FNB then returning to Slot 1 ports 2 5 etc 2 3 4 LANVIEWLEDs There are a number LEDs on the front panel of the concentrator modules While the quantity of port specific LEDs differ between the 12 and 24 port concentrator modules all four concentrator modules are equipped with the same indicators Three concentrator specific LEDs indicate the current ring speed 16M B bypass BYP and the current mode management MGMT or automatic and two port specific LEDs per port that indicate Port Enabled PEN and Port Linked LNK status These are illustrated in Figure 2 4 Figure 2 4 TRMIM 24LANVIEW LEDs Page 2 9 REQUIRE MENTS SPECIFICATIONS 16MB Ring Speed LED Y ellow is lit to indicate that the concentrator module ring speed is set to 16 Mbit s When this indicator is not lit the ring speed is set to 4 Mbit s BYP Error Yellow when lit indicates that the module is in bypass mode PEN Port Enabled Yellow 12 or 24 when lit indicates that the associated port is enabled by network management LNK Link Status Green 12 or 24 when lit indicates that the associated station is providing phantom current MGMT Management Green when lit indicates that the concentrator module is in Manageme
7. physical lobe connection from the concentrator module to the token ring station does not require the use of a crossover cable The TCU and token ring station connectors are wired such that the transmit pair from the concentrator module connects to the receive pair in the station and the receive pair from the concentrator module connects to the transmit pair in the station This provides the Page 3 4 INSTALLING THE CONCENTRATOR MODULE necessary signal crossover or null modem effect Table 3 1 provides a cross reference of pinouts for connections that may be encountered along the length of lobe cabling Table 3 1 Connector Pinout Cross reference Signal RJ 11 RJ 45 Data Connector DB 9 6 pin modular 8 modular MIC 9 pin D shell connector connector connector genderless TX 5 6 O Orange 9 TX 2 3 B Black 5 RX 3 4 R Red 1 RX 4 5 G Green 6 The lobe cabling used with the TRMIM 42 44 requires shielded RJ 45 connections to attain the maximum lobe lengths listed in Chapter 2 Installation Requirements Specifications Shielded patch cables that adapt a shielded RJ 45 to a Data Connector MIC are available from Cabletron Systems These adapter patch cables permit connecting to an existing patch panel equipped with data connectors see Figure 3 3 STP Lobe Cable TX RX 6 6 n g TX
8. Cs can be connected into the same ring network by installing token ring concentrators TRMIM 10R 20R with externally accessible Ring l n Ring Out ports or token ring repeaters TRRMIM A 2A 4A The choice between using concentrators or repeaters depends on specific network configurations Refer to Cabletron Systems TRMI M 10R 20R Installation Guideor TRRMI M A 2A 4A Installation Guide for more information on the use of these products or contact Cabletron Systems Technical Support A variety of network management tools can be used to control and monitor these repeaters including Cabletron Systems Local Management Remote LANVIEW Windows and SPECTRUM LANVIEWLEDs Several LEDs on the front panel of the concentrator module are used to indicate the ring speed a bypass condition status and management statistics for each of the TCU ports LANVIEW is an effective tool to help you quickly diagnose your physical layer network problems Page 1 4 INTRODUCTION 13 RELATED MANUALS The manuals listed below should be used to supplement the procedures and other technical data provided in this manual The procedures in them will be referenced where appropriate but will not be repeated Cabletron Systems Multi Media Access Center Overview and Set Up Guide Cabletron Systems TRRMIM A TRRMIM 2A amp TRRMIM 4A Token Ring Repeaters Installation Guide Cabletron Systems TRMIM 10R STP Token Ring Concentrator Installation Guide Cablet
9. TX m 3 8 5 TX TRMIM 42 44 Token Ring Station TCU Port x 4 4 1 RX 5 5 RX p DB 9 RJ 45 Token Ring Station ed red Lobe Cable TX RX e e 516 TX TX TX TRMIM 22 24 rx 3 3 peg 5 7 TCU Port MEDIA RX RX 4 4 4 FILTER 1 RX 5 5 8 PX 6 RX Sale SSS SS T ope Figure 3 3 Token Ring Station Cabling Page 3 5 INSTALLING THE CONCENTRATOR MODULE A Type 3 Media Filter see Figure 2 1 must be used when connecting the UTP lobe cable from either of the active UTP concentrator modules TRMIM 22 24 to a token ring station that is not equipped with an internal filter A Type 3 Media Filter such as the Cabletron Systems TRMF provides impedance matching from the Type 3 UTP lobe cabling to the Type 1 STP interface provided with many token ring stations Attaching the Lobe Cabling at the Concentrator Module Thetwisted pair lobe cabling from the token ring station can be connected to any concentrator module port To attach the station cable at the concentrator module 1 Locatethelobe cable or patch cable that will be used to attach the token ring station to the concentrator module 2 Insert the male RJ 45 connector from one end of the stati on cabling into any TCU port 1X through 12X or 24X at the front of the concentrator module see Figure 3 4 3 Ifa patch panel is being used attach the other end of the cable to th
10. This section contains procedures to verify that the connections between the concentrator module and the token ring stations are functioning properly A description of the LANVIEW LEDs is also provided 4 1 INSTALLATION CHECKOUT Perform the following to check the installation of the concentrator module 1 Besure that the token ring stations and the match the AC power source 120 Vac or 240 Vac and are powered on 2 Trace the ring path through the network to be sure that there are no breaks in the ring and that it is free from logical design errors While tracing the ring a Check each cable connection at the MIM b Verify the pinouts for every connection c Check the cable conductors for continuity Cable testers are available for this task d Check that cable connections at patch panels and wall plates are secure 3 Check the network ring speed a Verify that the ring speed matches the station and cable specifications mentioned in Chapter 2 Installation Requirements Specifications b Besure that all devices in the ring network are set tothe same ring speed Check all MIMs and stations in the network Page 4 1 TESTING AND TROUBLESHOOTING Check that the MIMs in the are grouped together according to network type and data rate For example Ethernet MIMs together 4 Mbit s token ring MIMs together and 16 Mbit s token ring MIMs together 4 Ensurethat the maximum cable length for EACH st
11. ade Type 3 Specifications Frequency Impedance Attenuation 1 Mhz 100Q 15 lt 26 dB km 8 dB 1000 ft 4Mhz 1002 15 lt 56 dB km 16 dB 1000 ft 10 Mhz 100Q 15 lt 98 dB km 30 dB 1000 ft 16 Mhz 100Q 15 lt 131 dB km 40 dB 1000 ft NOTE Type3 Consists of four Unshieded Twisted Pairs of 24 AWG solid wire for data or voice communication and is typically used to wirecableruns within the walls of buildings In some installations existing UTP building wiring can be used for token ring cabling DO NOT connect UTP cabling to any non token ring network conductors telephone etc or ground If in doubt test wiring before using WARNING Telephone Battery and Ringing voltages used in UTP teleohone circuits could present a shock hazard and can damage token ring equipment when connected to token ring cabling Type 3 Media Filter When connecting token ring devices that are not equipped with a Type 3 Media Filter to either of the active UTP concentrator modules TRMIM 22 24 a Type 3 Media Filter such as the Cabletron Systems TRMF see Figure 2 1 or TRMF 2 must be installed in line with the lobe cable at the connection to token ring station Page 2 2 REQUIRE MENTS SPECIFICATIONS STP CABLE TYPES WITH LANVIEW lp CABLETRON TRMF 802 5 MEDIA FILTER Figure 2 1 Cabletron Systems Both STP TRMIM 42 amp 44 concentr
12. ation and the maximum number of stations are not exceeded When these checks have been successfully completed for each connection the concentrator module is ready for normal operation If further problems occur contact Cabletron Systems T echnical Support 42 USING LANVIEW LANVIEW is Cabletron Systems built in visual diagnostic and status monitoring system Using LANVIEW your network troubleshooting personnel can quickly scan the LANVIEW LEDs to determine network status diagnose network problems and isolate faulty nodes or trunk segments TheLANVIEW LED locations are shown in Figure 4 1 Whilethe TRMIM 24 is shown in the illustration the locations and definitions apply to all four concentrator modules except that for the TRMIM 22 and TRMI M 42 ports 13 through 24 and the LEDs associated with them are not present e 16MB TheRing Speed LED Yellow is lit to indicate that the concentrator module ring speed is set to 16 Mbit s When this indicator is not lit the ring speed is set to 4Mbit s Thering speed is set to a default setting by hardware jumper J 1 refer to Chapter 3 Installing the Concentrator Module for setting this jumper The concentrator module is set to the default ring speed at power on Thering speed can be changed via network management software BYP Theerror indicator Red should not lit under normal operating conditions When lit this LED indicates the detection of a concentrator module hardwa
13. ator modules support Type 2 6 and 9 STP cabling as described in Table 2 2 STP cabling must conform to the limits shown in Table 2 3 Table 2 2 IBM Cable Types Type 1 Type 2 Type 6 Type 9 Two shielded twisted pairs STP of 22 AWG solid wire for data Used for the longest cable runs within the walls of buildings Similar to Type 1 data cable but having four additional unshielded twisted pairs of 22 AWG solid wire These are carried outside of the shield casing and are typically used for voice communication Frequently used to wire cable runs within the walls of buildings Two STP of 26 AWG stranded wire for data This type is used in patch panels or to connect devices to from wall jacks Attenuation for Type 6 cable is 3 2 x Type 1 cable 66 m of Type 6 100 meters of Type 1 Similar to Type 1 but uses 26 AWG solid wire Attenuation for Type 9 cable is 3 2 x Type 1 cable 66 m of Type 9 100 meters of Type 1 Page 2 3 REQUIRE MENTS SPECIFICATIONS Attenuation and Impedance The maximum attenuation for specific STP cable types is shown in Table 2 3 The attenuation values include the attenuation of the cables connectors patch panels and reflection losses due to impedance mismatches in the segment Table 2 3 STP Cable Specifications Frequency Impedance Attenuation Types 1 amp 2 4Mhz 150Q 15 lt 22 dB km 6 7 dB 1000 ft 16 Mhz 1500 15 45 dB km 13 7 dB 1000 ft T
14. bling is used anywhere on the ring the number of stations is limited to 72 stations regardless of the ring speed 2 3 OPERATING SPECIFICATIONS This section describes the operating specifications for each of the active token ring concentrator modules Cabletron Systems reserves the right to change these specifications at any time without notice 2 3 1 Connector Types The concentrator module TCU ports are internally crossed over to provide connection of station lobe cabling via female RJ 45 receptacles on the front panel Figure 2 2 shows the pinouts required for the mating male RJ 45 connectors for both UTP and STP versions of the concentrator modules The RJ 45 connectors male and female used with the TRMIM 42 and TRMIM 44 are encased in a metallic shield that is connected to the cable shield TRMIM 22 24 TRMIM 42 44 Trunk Coupling Unit Cable Shield TCU Port TX RX RX TX 2 Cable Shield Figure 2 2 Concentrator Module TCU Port Pinouts Page 2 7 REQUIRE MENTS SPECIFICATIONS The shield continuity is maintained by contacts within the female RJ 45 that contact the metallic casing of the male RJ 45 on the STP lobe cabling Shielded patch cables that adapt a shielded RJ 45 toa Data Connector MIC are available from Cabletron Systems in eight foot lengths These adapter patch cables permit connecting to an existing patch panel equipped with
15. centrator module Instructions for using LANVIEW Cabletron Systems built in visual diagnostic and status monitoring system are also included 12 THE CONCENTRATOR MODULES The TRMIM 22 TRMI M 24 TRMIM 42 and TRMIM 44 shown Figure 1 1 can be installed as a free standing token ring network or to provide UTP or STP connectivity to an existing token ring network All four concentrator modules are designed for installation into Cabletron Systems MMAC Since they do not have externally accessible Ring I n and Ring Out ports they are considered concentrator modules A concentrator in token ring applications is defined as a device with multiple TCU ports bounded by externally accessible Ring I n and Ring Out ports four concentrator modules are designed for installation into Cabletron Systems where they be used to create an independent 12 or 24 port ring or to expand an existing token ring network When any concentrator module is used within an MMAC the concentrator module is connected through the MMAC backplane via the Flexible Network Bus FNB to other token ring MIMs repeaters bridges or management modules MIMs automatically attach to each other through the FNB when positioned in adjacent slots and configured with identical ring speed settings Page 1 2 INTRODUCTION
16. ch circuits If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the F ederal Communication Commission helpful Interference andbook This booklet is available from the U S Government Printing Office Washington D C 20402 Stock No 004 000 00482 5 INTRODUCTION CHAPTER 1 INTRODUCTION Welcome to the Token Ring Media Interface Modules Installation Guide This manual serves as a reference for installing and troubleshooting Cabletron Systems TRMIM 22 TRMIM 24 TRMIM 42 and TRMIM 44 TRMIM 22 TRMI M 24 TRMIM 42 and TRMI M 44 comprise a family of Token Ring Concentrator modules The TRMIM 22 and TRMIM 24 provide 12 and 24 trunk coupling unit TCU ports respectively that support voice grade unshielded twisted pair UTP cabling The TRMIM 42 and TRMIM 44 have 12 and 24 TCU ports respectively supporting BM type 1 2 6 and 9 shielded twisted pair STP cabling Both UTP concentrator modules and both STP concentrator modules are equipped with RJ 45 modular connectors The STP concentrator module RJ 45 connectors provide for connection of the cabling shield four concentrator modules are designed for installation in any Cabletron Systems Multi Media Access Center M M AC equipped with a Flexible Network Bus FNB All four concentrator modules IEEE 802
17. e appropriate patch panel jack 4 Repeat these steps for each station CONCENTRATOR MODULE RJ 45 PORT STATION CABLE Figure 3 4 Connecting Stations to the Concentrator Module Page 3 6 INSTALLING THE CONCENTRATOR MODULE Attaching the Lobe Cable at the Station Connect the stations to the concentrator module using a Type 3 patch cable Attach one end of the patch cable at the wall plate and the other to the station port see Figure 3 4 NOTE A Type 3 Media Filter must be installed at the station end of thelobe cable when connecting UTP lobe cabling between an active UTP concentrator module and a token ring station without an internal filter 3 5 FINISHING THE INSTALLATION With power on at the MMAC and the attached stations the green Link Attached LEDs on the MIM should be illuminated for each station that is inserted intothering The yellow 16MB LED should only be on if the concentrator module is set for 16 Mbit s ring speed If these conditions do not exist proceed to Chapter 4 Testing and Troubleshooting The concentrator is now ready for operation Before placing the network into service test the installation thoroughly to be sure that all stations are able to be addressed and that the data is being relayed without error Verify that the networking software is configured properly to match the installed network Page 3 7 TESTING AND TROUBLESHOOTING CHAPTER 4 TESTING AND TROUBLESHOOTING
18. elp to obtain optimum performance from your network UTP cabling should be free of splices stubs or bridged taps No more than two punch down blocks between TCU ports and wall outlets Metal troughs ducts etc carrying token ring signals should be properly grounded Route cables away from sources of electrical noise such as Power lines Fluorescent lights Electric motors Radiointerference Heavy machinery Do not use UTP as main trunk cabling Token ring signals should not be routed through UTP cables that exit a building or which are adjacent to cables either exiting a building or exposed to lightning strikes and power surges UTP cables that contain token ring signals should not be simultaneously used for applications which may impress high voltages greater than 5 volts with sharp rise or fall times since the noise coupling from such signals could directly cause errors on the token ring network For single telecommunications closet rings lobe lengths should not exceed 100 meters or 22 to 24 AWG wire from the attaching device and the TCU port When possible use dedicated UTP cablefor token ring signals Page 2 6 REQUIRE MENTS SPECIFICATIONS 2 2 MAXIMUM NUMBER OF STATIONS The maximum number of stations in a single ring using STP lobe cabling is dependent on the ring speed At 4 Mbit s up to 250 stations can be connected At 16 Mbit s up to 136 stations can be connected When UTP lobe ca
19. g boards set to different ring speeds requires the use of a bridging device e Toestablish a network path between a token ring network another network type i e FDDI or Ethernet requires the use of a bridging device 3 1 UNPACKING THE CONCENTRATOR MODULE Prior toinstallation unpack and visually inspect your concentrator module for damage CAUTION Elecrostatic Discharge ESD can damage your concentrator module Observe all precautions to prevent dectrostatic discharges and when handling the concentrator module Hold only the edges of the board or the metal front panel Avoid touching the components or surface of the board l Carefully remove the concentrator module from the shipping box Save the box and materials for possible future repackaging and shipment 2 Removethe concentrator module from its protective plastic bag and set it on top of its protective bag in a static free area This will help to prevent ESD damage Contact Cabletron Systems Technical Support immediately if you encounter any problems unpacking or installing your concentrator Page 3 2 INSTALLING THE CONCENTRATOR MODULE 3 2 CONFIGURING THE CONCENTRATOR MODULE 1 Position the hardware jumper on the proper pins on the concentrator module to select either 4 or 16 Mbit s as the default network ring speed see Figure 3 1 The speed setting is a factor in determining the maximum lobe length Refer to Chapter 2 Installation Requirements Specif
20. ications for additional information NOTE Thenetwork speed is also selectable by software The software sd ection overrides the hardware jumper sd ection 12 24 RJ 45 TCU Port Connectors 4 Mbit sec 16 Mbit sec J1 Network Speed Jumper Mother board Front Panel Figure 3 1 Network Speed J umper 3 3 INSTALLING THE CONCENTRATOR MODULE INTO THE MMAC Install the concentrator module into the MMAC as follows 1 If it is not already powered off power off the chassis by unplugging the AC power cord from the wall outlet Remove the selected blank panel from the MMAC and slide the concentrator module into the MMAC card cage see Figure 3 2 Be sure that the card is in the card guides at the top and bottom slots of the card cage NOTE Themodule may be Hot Swapped when servicing Page 3 3 INSTALLING THE CONCENTRATOR MODULE 3 Secure the module to the by tightening the knurled knobs Failure to firmly secure the MIM may result in improper operation 4 Power on the MMAC chassis by plugging the AC power cord into the wall outlet MMAC 8 CONCENTRATOR MODULE KNURLED KNOBS BOARD SLOT Figure 3 2 Installing the Concentrator Module 3 4 CONNECTING LOBE CABLING Prior to connecting cables check that the pinouts and maximum cable lengths throughout the system conform to the requirements described in Chapter 2 Installation Requirements Specifications The
21. ific management bridging repeater modules When the concentrator module is being installed into an MMAC 8 or MMAC 8FNB be surethat a PSM or PSM R is installed in the associated rear power supply slot The PSM or PSM R Power Supply Module is the source of power for MMAC modules One Power Supply Module is required for every two MIMs NOTE ThePSM R Redundant Power Supply Module is recommended for use with the MM AC 8F NB with a Flexible Network Bus e Multiple token ring products within an are automatically linked at power on provided that the following conditions are met must be configured with an FNB either an MMAC 3FNB MMAC 5 or an MMAC 8FNB Without the FNB the individual MIMs will not be linked but will form independent Token Ring networks Page 3 1 INSTALLING THE CONCENTRATOR MODULE NOTE TheFNB isa full haght full width backplane that links Cabletron Systems Token Ring products MMAC 3s and MMAC 8s without an FNB beupgraded with an FNB providing greater flexibility in configuring your systen Contact Cabletron Systens Technical Support for more information The boards being linked must be arranged sequentially in adjacent MMAC slots 0 slots 2 3 and 4 Tolink Token Ring boards the boards must be set to the same ring speed Token Ring boards operating at different ring speeds 4 Mbit s and 16 Mbit s cannot be attached into the same ring network Linkin
22. iness Machines Corporation This device complies with Part 15 of FCC rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference re ceived including interference that may cause undesired operation NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment uses generates and can radiate radio frequency energy and if not installed in accordance with the operator s manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause interference in which case the user will be required at his own expense to correct the interference If this equipment does cause interference to radio or television which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Re orient the receiving antenna Relocate the equipment with respect to the receiving antenna Move the equipment away from the receiver Plug the equipment into a different outlet so that the equipment and the receiver are on different bran
23. nt Mode Settings are stored by the management module in slot 0 2 3 5 General Specifications SAFETY WARNING It is theresponsibility of the person who sells the system to which the TRMIM 22 TRMIM 24 TRMIM 42 TRMIM 44 will be a part to ensurethat thetotal system meets allowed limits of conducted and radiated emissions This equipment is designed in accordance with UL478 UL910 NEC 725 2 b CSA IEC TUV VDE Class A and meets FCC Part 15 Class A limits SERVICE TRMIM 22 42 TRMIM 24 44 MTBF MHBK 217E TBD TBD MTTR 0 5 hr 0 5 hr Page 2 10 REQUIRE MENTS SPECIFICATIONS PHYSICAL Dimensions 13 4D x 11 5H x 2 0W inches includes front panel 34 0D x 29 2H x 5 1W centimeters Weight 2 Ibs 2 oz 963 9 grams Page 2 11 INSTALLING THE CONCENTRATOR MODULE CHAPTER 3 INSTALLING THE CONCENTRATOR MODULE This chapter contains instructions for installing your concentrator module into a Cabletron Systems MMAC product and connecting token ring stations at the concentrator module s trunk coupling unit TCU ports Check that all requirements listed in Chapter 2 Installation Requirements Specifications have been met before installing and operating the concentrator module When you install your concentrator module the following guidelines will help you to properly configure your system e concentrator module cannot be installed into the rightmost slot Slot O Slot O is reserved for spec
24. onnections the length of cables and other conditions of the installation are critical factors in determining the reliability of your network Work area wall plates outlets used for your token ring network should be clearly labeled as token ring network lobe connections The following sections describe network requirements for this equipment 2 1 1 Cable Specifications The media used for station lobe cabling depends on your specific concentrator module e TheTRMIM 22 TRMIM 24 support voice grade UTP cable as described in EIA Standard Proposal 1907 A Type 3 UTP cabling TheTRMIM 42 and TRMIM 44 support shielded twisted pair STP cable Types 1 2 6 and 9 at their trunk coupling unit TCU ports Page 2 1 REQUIRE MENTS SPECIFICATIONS UTP CABLE TYPES Both UTP concentrator modules 22 amp 24 support D inside wiring DIW voice grade Unshielded Twisted Pair UTP cable as described in SP 1907B Voice grade UTP cabling e g Type 3 UTP must conform to the limits shown in Table 2 1 The increased popularity and cost advantages of UTP cable have driven refinements to UTP cable design As a result better grades of UTP cable known as supergrade or level 4 that exhibit improved transmission characteristics are becoming available These improved grades of UTP can often be used to permit operation at 16 Mbit s on longer lobe cables Table 2 1 UTP Voice Gr
25. re failure If the problem persists contact Cabletron Systems Technical Support Page 4 2 TESTING AND TROUBLESHOOTING BYP MGMT Figure 4 1 Concentrator Module LANVIEW LEDs PEN Port Enabled Status Yellow 12 or 24 indicates that the associated port is enabled by network management A port that is enabled is set to permit insertion of the attached token ring station When both the PEN and LNK LED arelit for the same port the token ring station attached to that TCU port is inserted thering When this LED is not lit the associated port is disabled and insertion onto the ring is inhibited LNK Link Status Green 12 or 24 provides a visual indication of phantom current from the associated token ring station When this LED is lit the associated station is providing phantom current When this LED is not lit the associated station has removed phantom current from the TCU port connection MGMT Management Green when lit indicates that the concentrator module is in Management M ode Page 4 3
26. ron Systems TRMIM 12 Token Ring Media Interface Module Installation Guide 14 RECOMMENDED READING The following publications are recommended if more information is required on implementing a token ring network Local Area Networks Token Ring Access Method IEEE Standard 802 5 1989 Commercial Building Wiring Standard EIA Standard Proposal No 1907 B if approved to be published as El A TIA 568 LAN Troubleshooting Handbook Mark Miller 1989 M amp T Publishing Page 1 5 INTRODUCTION 15 GETTING HELP If you need additional support related to the Cabletron Systems Token Ring products or if you have any questions comments or suggestions related to this manual contact Cabletron Systems Technical Support at Cabletron Systems P O Box 5005 Rochester NH 03867 0505 Phone 603 332 9400 Page 1 6 REQUIRE MENTS SPECIFICATIONS CHAPTER 2 INSTALLATION REQUIREMENTS SPECIFICATIONS Before you attempt to install your concentrator module review the installation requirements and operating specifications that are outlined in this chapter Your network installation must meet the conditions guidelines specifications and requirements included in this chapter to obtain satisfactory performance from this equipment Failure to follow these guidelines could produce poor network performance 2 1 NETWORK REQUIREMENTS Take carein planning and preparing the cabling and connections for your network The quality of the c
27. ypes 6 amp 9 4Mhz 1500 15 33 dB km 10 dB 1000 ft 16 Mhz 1500 15 lt 66 dB km 20 dB 1000 ft Cable Lengths to Stations The physical length of the cable connecting a station to the trunk coupling unit TCU port on the concentrator module is referred to as lobe length The maximum lobe length attainable under ideal conditions with the concentrator module is shown in Table 2 4 Cable routing connector attenuation noise and crosstalk can adversely influence the maximum lobe length Table 2 4 Maximum Lobe Length Maximum Lobe Length Cable Type 4 Mbit s 16 Mbit s TRRMIM 22 24 Voice Grade UTP 200 meters 100 meters or Type 3 656 feet 328 feet TRRMIM 42 44 STP IBM Types 1 amp 2 300 meters 150 meters 984 feet 492 feet STP IBM Type 6 amp 9 200 meters 100 meters only for station to wall 656 feet 328 feet jack and patch panels Page 2 4 REQUIRE MENTS SPECIFICATIONS Mixed Cable Types If you mix cable types in your installation you must compensate for the different cable attenuations Type 6 and Type 9 cables can be run for only 2 3 the distance of Type 1 This means 10 meters Type 1 6 6 meters Types 6 9 Sample Problem Determine the maximum length for mixed cabling installation 16 Mbit s ring speed and 130 stations The building has 60 meters of Type 1 cable the wall What is the length of Type 6 cable available to connect
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