Cabletron Systems TRRMIM-2AT User Manual Download | Manualshive

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Configuration Specifications

Page A-6

ring and are not affected by the utilization of FNB rings 2, 3, or 4 by
other MIMs in the MMAC.

Port switching MIMs do not have the ability to wrap (segment) the
FNB; they are automatically and internally connected to the MIMs
adjacent to them via the MMAC chassis. However, a neighboring
single-ring MIM may wrap the connection between itself and a
port-switching MIM to isolate the port-switching MIMs from other
MIMs in the hub.

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Summary of Contents for TRRMIM-2AT

Page 1: ...CABLETRON SYSTEMS P O Box 5005 Rochester NH 03866 5005 The Complete Networking Solution TRXMIMTM USER S GUIDE MODELS 22A 24A 42A 44A ...

Page 2: ...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 February 1996 by Cabletron Systems Inc P O Box 5005 Rochester NH 03866 0505 All Rights Reserved Printed in the United States of America Part Number 9031265 February 1996 TRXMIM TRBMIM TDRMIM TRMIM TRMM 2 and TRMM 4 are tr...

Page 3: ... 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 to correct the interference at his own expense WARNING Changes or modifications made to this device which are not expressly approved by the party responsible for compliance could void the user s authority...

Page 4: ...ND DISCLAIMER OF LIABILITY IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT PROMPTLY RETURN THE UNUSED PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND CABLETRON SOFTWARE PROGRAM LICENSE 1 LICENSE You have the right to use only the one 1 copy of the Program provided in this package subject to the terms and conditions of this License Agreement You may not copy reproduce or transmit any part of ...

Page 5: ...TRON PRODUCT EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES OR ON THE DURATION OR LIMITATION OF IMPLIED WARRANTEES IN SOME INSTANCES THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU UNITED STATES GOVERNMENT RESTRICTED RIGHTS The enclosed product a was de...

Page 6: ...Related Manuals 1 12 1 3 2 Recommended Reading 1 12 1 3 3 Getting Help 1 13 CHAPTER 2 INSTALLATION REQUIREMENTS SPECIFICATIONS OF OPERATION 2 1 GENERAL CABLING CONSIDERATIONS 2 1 2 1 1 Network Performance Requirements 2 1 2 1 2 Installation Recommendations 2 2 2 1 3 Maximum Number of Stations 2 3 2 2 UTP CABLING SPECIFICATIONS 2 3 2 2 1 UTP Cable Categories 2 4 2 2 2 UTP Cable Lengths to Stations ...

Page 7: ...LATION 3 2 3 2 1 Unpacking the TRXMIM 3 2 3 2 2 Setting the Default Ring Speed Jumper 3 3 3 2 3 Installing the TRXMIM into an MMAC 3 4 3 2 4 Boot Up Check 3 5 3 2 5 Connecting Lobe Cabling 3 6 3 2 6 Pre Operational Testing 3 9 CHAPTER 4 TESTING AND TROUBLESHOOTING 4 1 INSTALLATION CHECKOUT 4 1 4 2 LANVIEW LED SIGNALS 4 2 4 2 1 LANVIEW LED Definitions Table 4 3 4 2 2 ERR Error 4 4 4 2 3 BYP Bypass ...

Page 8: ...NTRODUCTION TO FOUR RING FNB FUNCTIONALITY A 1 Introduction A 1 A 2 The Flexible Network Bus FNB A 1 A 3 FNB Operations Without Port Switching A 1 A 4 FNB Operations With Port Switching A 3 A 5 Configuration Specifications A 5 ...

Page 9: ...G3 16Mb RING2 16Mb RING1 16Mb BYP IN USE IN USE IN USE IN USE IN USE MGNT ERR PORTS TRXMIM 24A SWITCHING UTP TOKEN RING 12 6 11 5 10 4 9 3 8 2 7 1 IN USE AUX2 16Mb AUX1 16Mb RING4 16Mb RING3 16Mb RING2 16Mb RING1 16Mb BYP IN USE IN USE IN USE IN USE MGNT ERR PORTS 24 23 22 21 20 19 18 17 16 15 14 13 IN USE TRXMIM 42A 12 6 11 5 10 4 9 3 8 2 7 1 IN USE AUX2 16Mb AUX1 16Mb RING4 16Mb RING3 16Mb RING2...

Page 10: ... TRXMIM model Chapter 3 Installing the TRXMIM contains instructions for installing the TRXMIM into a Multi Media Access Center MMAC and attaching Token Ring station cabling Chapter 4 Testing and Troubleshooting describes diagnostic checks to assist in the correction of post installation problems and provides detailed descriptions of LANVIEW Cabletron Systems built in visual diagnostic and status m...

Page 11: ...le RJ 45 modular connector jack to support the attachment of either STP shielded twisted pair or UTP unshielded twisted pair cabling with RJ 45 connector plugs Models that support STP cabling use RJ 45 connectors that provide a grounded connection for the cabling shield Lobe Port and Ring Out Port Configurations Each TCU port on the TRXMIM is internally defaulted to operate as a lobe interface to ...

Page 12: ...ated from the ring The TRXMIM then provides a simple visible LED signal to indicate to network managers that Speed Fault Protection has disabled the port The port stays disabled until re enabled by management Refer to Section 4 2 LANVIEW LED SIGNALS for information on the LANVIEW LED visual status monitoring system 1 2 2 Port Assignments and Port Switching The TRXMIM requires the support of a port...

Page 13: ...l vertically stacked FNB rings as shown in Figure 1 3 The FNB itself does not change but these modules change the way it is used Figure 1 3 FNB Expanded to Four Rings by Port Switching MIMs TRXMIMs are thus able to offer flexible network connectivity eliminating the need to change cable connections when switching TRMIM TRMIM TRMIM TRMM TRMIM TRMIM TRMIM TRMMIM FNB ring wrapped at TRMMIM s right FN...

Page 14: ... the FNB they function as complete independent Token Rings within the module This brings the connectivity total to six Token Rings accessible from any TRXMIM port two isolated auxiliary rings within the module itself and four rings on the FNB which can be used to intercommunicate with other stations devices connected to the same FNB rings via other MIMs in the hub FNB ring 1 FNB ring 2 FNB ring 4 ...

Page 15: ...re not available the device uses the configurations dictated by its hardware default settings Assignments from a management module always override the TRXMIM s hardware defaults Default Port Assignments All TRXMIM TCU ports are assigned by default to FNB ring 1 This default is not user configurable Default Ring Speeds The FNB ring 1 default ring speed is set by the position of the Default Ring Spe...

Page 16: ...AU Multi Station Access Unit workgroups Note The output of the TRXMIM s LANVIEW LEDs for a Ring Out port is quite different from the output for a station lobe port See Section 4 2 LANVIEW LED SIGNALS for a discussion of this and all other LED signal details Improved Protection from Beaconing The TRXMIM provides enhanced reliability for existing networks which use passive MAUs because Multiple Ring...

Page 17: ...MAU station The 8 stations on that MAU still go down but the remaining MAUs and their stations stay operational 8 Stations 8 Stations 8 Stations 8 Stations Multi Station Access Units MIM with Ring In Ring Out Ring Out Ring Out Ring Out Ring Out Ring In Ring In Ring In Ring In Ring Out Ring In When MAUs are daisy chained they are connected as single collective entity The entire chain must be bypass...

Page 18: ...nto an MMAC to increase the number of ports available on a Token Ring network Any TRXMIM installed within an MMAC may be connected to other Token Ring MIMs repeaters bridges and management modules within the hub When installed contiguously in the MMAC and configured with identical ring speed settings port switching MIMs automatically attach to each other via the continuous FNB rings on the backpla...

Page 19: ... FNB rings 2 3 and 4 require contiguous contact with other port switching MIMs to maintain ring continuity 1 2 6 LANVIEW LEDs The LANVIEW LED system is Cabletron Systems built in at a glance visual diagnostic and status monitoring system which facilitates the quick diagnosis of physical layer network problems The LANVIEW LED system comprises several LEDs located on the front panel of the TRXMIM wh...

Page 20: ...1428 1 3 2 Recommended Reading The following publications are recommended if more information is required regarding the implementation of Token Ring networks 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 EIA TIA 568 LAN Troubleshooting Handbook Mark Miller 1989 M T Publishing ...

Page 21: ...etting Help Page 1 13 By CompuServe GO CTRON from any prompt By Internet mail support ctron com By Fax 603 337 3075 By BBS 603 337 3750 By mail Cabletron Systems Inc P O Box 5005 Rochester NH 03866 5005 ...

Page 22: ...s the reliability of data propagation on the network The quality of the connections the length of cables and other conditions of the installation are critical factors in determining the reliability of the network 2 1 1 Network Performance Requirements The overall cabling system used in a Token Ring network must meet the following performance requirements All STP cables of IBM Type 1 2 6 and 9 meet...

Page 23: ...lity of cable connections contribute considerably to noise levels If noise induced errors are suspected it may be necessary to re route cabling away from potential noise sources or to ensure that the electrical wiring in the area is properly wired and grounded or to replace connectors along affected segments Total attenuation is reduced by lobe length reductions cable upgrades and connector improv...

Page 24: ...CU port Where practical dedicated cable should be used for Token Ring signals Work area wall plates and outlets used for the Token Ring network should be clearly labeled as Token Ring network lobe connections 2 1 3 Maximum Number of Stations The maximum number of stations in a single ring using STP lobe cabling is 250 stations Although higher numbers are possible with better quality cabling when U...

Page 25: ...At 16 Mb s ring speeds some Category 3 cable does not meet the performance requirements of a Token Ring network This may impose lower limits on lobe cable distances and ring node counts See Table 2 2 Categories 4 and 5 are higher quality versions of category 3 They use the same gauge of wire but demonstrate superior performance due to improvements in material quality and assembly e g more twists p...

Page 26: ...a station to a TCU port on the concentrator is referred to as the lobe length The maximum lobe length attainable with the concentrator under ideal conditions is shown in Table 2 3 Cable routing connector attenuation noise and crosstalk can adversely affect the maximum lobe length Some UTP category 3 cables fail to meet the performance minimums required to support a Token Ring network Whereas categ...

Page 27: ...pe 1 consists of two shielded twisted pairs STP of 22 AWG solid wire for data Used for the longest cable runs within the walls of buildings IBM Type 2 consists of six pairs of unshielded twisted pairs of 24 AWG solid wire and a shield casing The two pairs carried within the shield casing are used to carry Token Ring data The four pairs carried outside of the shield casing are typically used for vo...

Page 28: ... 9 100 m of Type 1 2 3 2 STP Cable Lengths to Stations The physical length of the cable connecting a station to a TCU port on the concentrator is referred to as the lobe length The maximum lobe length attainable with the concentrator under ideal conditions is shown in Table 2 5 Cable routing connector attenuation noise and crosstalk can adversely affect the maximum lobe length Mixed STP Cable Type...

Page 29: ...M 22A 24A a Type 3 Media Filter such as the Cabletron Systems TRMF or TRMF 2 must be installed in line with the lobe cable at the Token Ring station connection 2 4 2 Connector Types The concentrator modules TCU ports are internally crossed over to provide connection of straight through station lobe cabling via female RJ 45 receptacles on the front panel Figure 2 6 shows the pinouts required for th...

Page 30: ... Figure 2 7 STP Adapter Patch Cable PN 9372057 8 2 4 3 Ring Speeds The default ring speed for FNB ring 1 which is used in the absence of configuration commands from a management module is selected by the position of the Default Ring Speed Jumper on the board of the TRXMIM The process for setting the default ring speed for FNB 1 is defined and illustrated in Section 3 2 2 Setting the Default Ring S...

Page 31: ...to the specified ring Begin with the lowest numbered right most slot and list in numerical order each port inserted into the ring Repeatedly move to the next slot one position to the left and list the inserted ports in numerical order until all ports inserted into the ring have been listed The order is continuous wrapping directly from the MMAC s last inserted port to the first from the bottom of ...

Page 32: ... 2 Environmental Requirements Environmental Operating Temperature 5 to 40 C Storage Temperature 30 to 90 C Relative Humidity 5 to 95 non condensing 2 5 3 Safety Issues WARNING It is the responsibility of the vendor of the system to which the TRXMIM 22A TRXMIM 24A TRXMIM 42A TRXMIM 44A will be a part to ensure that the total system meets allowed limits of conducted and radiated emissions This equip...

Page 33: ...OTHER SPECIFICATIONS Page 2 12 2 5 4 Service Projections TRXMIM 22A 42A TRXMIM 24A 44A MTBF Mean Time Between Failure 592 098 hrs 563 987 hrs MTTR Mean Time To Repair 0 5 hr 0 5 hr ...

Page 34: ...default to and have access only to FNB ring 1 Check that all requirements listed in Chapter 2 Installation Requirements Specifications have been met before installing and operating the TRXMIM The following guidelines will be helpful in properly configuring the system at installation The TRXMIM can be installed into any slot in the MMAC except the rightmost Slot 1 This slot is reserved for specific...

Page 35: ...res the use of a bridging device 3 2 INSTALLATION Contact Cabletron Systems Technical Support immediately if you encounter any problems unpacking or installing the module 3 2 1 Unpacking the TRXMIM Unpack and visually inspect the TRXMIM for damage CAUTION Electrostatic Discharge ESD can damage the module Observe all precautions to prevent electrostatic discharges When handling the module hold only...

Page 36: ...ly FNB rings 2 3 4 and Auxiliary rings 1 2 always default to 16 Mb s Position the jumper on the proper pins on the TRXMIM as illustrated in Figure 3 8 to select either 4 or 16 Mb s as the default network ring speed for FNB ring 1 Note The network speed is also selectable via the management module Management selections will override hardware jumper selections Note The ring speed setting is a factor...

Page 37: ...ve the coverplate from the selected MMAC slot and slide the TRXMIM into the MMAC chassis see Figure 3 9 Be sure that the card is in the card guides at the top and bottom of the chassis 2 Secure the module to the MMAC by tightening the knurled knobs Failure to firmly secure the MIM may result in improper operation The TRXMIM is now installed BOARD SLOT 2 MMAC M8FNB TRMM 2 SN XMT LWRP 16Mb RCV CPU C...

Page 38: ...tivity see Section 4 2 LANVIEW LED SIGNALS When the Port LEDs turn from RED to off start up is complete Boot up may take a few minutes If the boot up does not proceed as described above refer to Chapter 4 Testing and Troubleshooting Table 2 6 LANVIEW LED Activity at First Boot up LED label at moment of Power on After Management Module boot up After Default boot up management module not present ERR...

Page 39: ...s been programmed by management or has gone to default mode the TRXMIM returns to normal operations 3 2 5 Connecting Lobe Cabling The physical lobe connection from the TRXMIM to the Token Ring station does not require the use of a crossover cable To provide the necessary signal crossover or null modem effect the TCU and Token Ring station connectors are wired so that the transmit pair from the TRX...

Page 40: ...patch cables that adapt a shielded RJ 45 to a Data Connector MIC are available from Cabletron Systems These adapter patch cables permit connection to a pre existing patch panel equipped with data connectors see Figure 3 10 Figure 3 10 Token Ring Station Cable Wiring Schematic Token Ring Station STP lobe cable TRXMIM 42A 44A TX TX RX RX TX TX RX RX Shield Shield 4 5 6 3 RJ 45 plug TX TX RX RX TCU p...

Page 41: ...f the cable to the appropriate patch panel jack 3 Repeat these steps for each station Attaching Lobe Cabling at the Station Connect stations to the TRXMIM using Type 3 patch cables Attach one end of the patch cable at the wall plate and the other to the station port see Figure 3 11 NOTE A Type 3 Media Filter must be installed at the station end of the lobe cable when connecting UTP lobe cabling be...

Page 42: ...e placing the network into service proceed to Chapter 4 Testing and Troubleshooting and test the installation thoroughly to be sure that all stations are able to be addressed and that data is being relayed without error Verify also that the networking software is configured properly to match the installed network ...

Page 43: ...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 each connection c Check all cable conductors for continuity Cable testers are available for this task d Check that all cable connections at patch panels and wall plates are s...

Page 44: ...l operation If further problems are encountered contact Cabletron Systems Technical Support 4 2 LANVIEW LED SIGNALS LANVIEW is Cabletron Systems built in visual diagnostic and status monitoring system Using LANVIEW network trouble shooting personnel can quickly scan the LANVIEW LEDs shown in Figure 4 12 to determine network status diagnose network problems and isolate faulty nodes or trunk segment...

Page 45: ...Status Descriptions LED LED status Meaning ERR off Normal operation RED Hardware Error condition BYP YELLOW No ports inserted in FNB rings MGMT off Internal default settings in effect GREEN TRXMIM has been configured by management module 16Mb off Ring speed set to 4Mb s YELLOW Ring speed set to 16Mb s IN USE off No ports inserted in ring GREEN At least one port inserted in ring Blinking GREEN At l...

Page 46: ...of its ports in loopback while it awaits configuration settings from a management module After the TRXMIM completes its start up procedure either the TRXMIM has been programmed by management or has gone to default mode all ports will be switched to appropriate rings and bypass will be dependent on the following conditions No ports are linked to the TRXMIM All lobe ports are without phantom current...

Page 47: ...with FNB ring 1 speed set according to the Default Ring Speed Jumper This LED may also be OFF during normal boot up before communications have been established between the TRXMIM and a management module When this LED is GREEN the TRXMIM has received configuration information such as port assignments and ring speeds from a management module in slot 1 Configuration settings such as port assignment a...

Page 48: ...ring It does not reflect ring activity that excludes this TRXMIM e g on rings bypassed from the TRXMIM If the LED is OFF no ports are inserted into the associated ring GREEN at least one port on the module is successfully inserted into the associated ring BLINKING GREEN at least one port is inserted into the ring but the ring itself is bypassed from the FNB by management command Because Auxiliary ...

Page 49: ... out of bypass mode and returns to normal operations When the TRXMIM is ready the ports will be switched to their respective rings and all suspended ports will be inserted into those rings If during normal operation the LED for a lobe port is GREEN the port is inserted into its assigned ring BLINKING GREEN a Token Ring station is phantom linked to the port but the port is disabled by management co...

Page 50: ...nserted into the ring BLINKING RED the Ring Out port is in a normal inactive state This is equivalent to OFF for a lobe port during normal operation Refer to Section 1 2 4 Support for Passive MAU Workgroups for an explanation of the operational difference between a Ring Out port and a lobe port RED the port is disabled by management command ...

Page 51: ...MIM and all Management Modules e g TRMM 2 that support port switching A 2 The Flexible Network Bus FNB The FNB is a data bus which spans the entire width of the backplane of the Multi Media Access Center MMAC providing Ring In Ring Out connections between each module and forming continuous channels for the inter communication of data between modules within the MMAC A 3 FNB Operations Without Port ...

Page 52: ...ing LANs as illustrated in Figure A 1 Figure A 1 FNB segmentation produces two isolated FNB rings Figure A 2 Four vertically stacked FNB rings TRMIM TRMIM TRMIM TRMM TRMIM TRMIM TRMIM TRMMIM FNB ring wrapped at TRMMIM s right FNB interface FNB ring segment A FNB ring segment B Port Switching MIMs FNB ring 1 FNB ring 2 FNB ring 3 FNB ring 4 TRMM 4 TRXMIM TRXMIM TRXMIM TRXMIM TRXMIM TDRMIM TDRMIM ...

Page 53: ...l pins in its FNB connector to create four vertically stacked parallel FNB rings as illustrated in Figure A 2 With simultaneous access to four rings port switching MIMs assign each of their concentrator ports on an individual basis to connect to any of four FNB rings providing multiple users with access to multiple rings Refer to Figure A 3 for a comparative illustration of the connectivity afford...

Page 54: ...1 TRMM 2 FNB ring 1 FNB ring 2 FNB ring 4 FNB ring 3 Port Assignments made by Token Ring Management Module are executed internally by TRXMIM Electronic reassignment of Port 12 from Ring 2 to Ring 4 TRXMIM 22A SWITCHING UTP TOKEN RING 7 X 8 X 9 X 10 X 11 X 12 X 1 X 2 X 3 X 4 X 5 X 6 X 12 6 11 5 10 4 9 3 8 2 7 1 IN USE AUX2 16Mb AUX1 16Mb RING4 16Mb RING3 16Mb RING2 16Mb RING1 16Mb BYP IN USE IN USE...

Page 55: ...NB rings 1 2 3 and 4 FNB ring 1 is the same ring that has connected all earlier generation single ring MIMs e g TRMIM and was addressed in earlier manuals as the FNB ring or simply the FNB The term the FNB now refers collectively to the channels and connectors of the MMAC backplane s communications bus which supports FNB rings interconnects MIMs and carries all user data A 5 Configuration Specific...

Page 56: ...C Port switching MIMs do not have the ability to wrap segment the FNB they are automatically and internally connected to the MIMs adjacent to them via the MMAC chassis However a neighboring single ring MIM may wrap the connection between itself and a port switching MIM to isolate the port switching MIMs from other MIMs in the hub ...

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