TDRMIM-22A/42ATM TOKEN RING DUAL REPEATER MIM USER’S GUIDE
TDRMIM Quick Reference Card SW1 Front Panel Switchblock SW1 Motherboard Daughterboard Side View of the TDRMIM OFF Fiber Optic Keying Sequence 8 8 7 7 6 6 [Unused] 5 5 [Unused] 4 4 [Leave OFF] 3 3 FNB Ring 1 Speed Default: ON = 16 Mbps; OFF = 4 Mbps 2 2 1 1 ON Ring Ports 1 Ring In Ring Ports 1 Ring Out Ring Ports 2 Ring In ON = 802.
ALL LED SIGNALS Normal operation ERR ERR R Hardware error condition, or reset in process BYP G Module Bypass—No ports inserted in FNB rings FNB interfaces active BYP G MGMT Hardware defaults in effect MGMT Y 16 MB G IN USE Ring inactive (no lobes connected) G 12 G Port enabled and transmitting Port linked but disabled by management Port in standby state 12 12 Ring active Ring active but bypassed from FNB G IN USE 12 16 Mbps ring speed in effect 4 Mbps ring speed in effect 16 MB IN
NOTICE NOTICE 1 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.
NOTICE FCC NOTICE 2 This device complies with Part 15 of the 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 received, 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 the FCC rules.
NOTICE CABLETRON SOFTWARE PROGRAM LICENSE 1. 5 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 the Program except as permitted by the Copyright Act of the United States or as authorized in writing by Cabletron. 2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the Program. 3. APPLICABLE LAW.
NOTICE UNITED STATES GOVERNMENT RESTRICTED RIGHTS 7 The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer software” submitted with restricted rights in accordance with Section 52227-19 (a) through (d) of the Commercial Computer Software Restricted Rights Clause and its successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its suppliers.
CONTENTS CHAPTER 1 1.1 1.2 1.3 Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 About the TDRMIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2.1 Ring In/Ring Out Ports . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2.2 Lobe Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1.2.3 Cluster Switching . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1.2.4 Automatic Configuration at Power-Up. . . . . . . . . . 1-7 1.2.
CONTENTS 2.6 2.5.5 LANVIEW LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 Other Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 2.6.1 Hardware Specifications . . . . . . . . . . . . . . . . . . . . 2-12 2.6.2 Environmental Requirements . . . . . . . . . . . . . . . . 2-12 2.6.3 Safety Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 2.6.4 Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 CHAPTER 3 3.1 3.
CHAPTER 1 Introduction Welcome to the Token Ring Dual Port Repeater/Concentrator Switching Media Interface Module User’s Guide. This manual is a reference for the installation and troubleshooting of Cabletron Systems’ TDRMIM-22A and TDRMIM-42A modules, represented in Figure 1-1. The TDRMIM is an active cluster-switching twisted pair concentrator with dual multimode fiber Ring In/Out repeater ports for Token Ring expansions. The IEEE 802.
Using This Manual 1.1 Using This Manual Prior to installing and operating the TDRMIM, read through this manual completely. If you are not familiar with port switching and four-ring FNB applications, read Appendix A, Introduction to Port Switching. This manual assumes users to have a working knowledge of Token Ring (IEEE 802.5) networks.
About the TDRMIM • Cable fault Autowrap on fiber optic trunk ports • Multi Ring Out connectivity for passive MAU workgroups • LANVIEW LEDs for “at-a-glance” diagnostic monitoring 1.2.1 Ring In/Ring Out Ports The dual multimode fiber Ring Port sets (Ring Ports 1 and Ring Ports 2) support two fully redundant ring extensions to other hubs up to 2 Km away from the MMAC.
About the TDRMIM Repeater Circuitry 1 The Ring Port sets provide circuitry that completely retimes and repeats all received signals before transmitting them to the next point on the ring. This enhances signal integrity and makes adjusted ring length (ARL) computations unnecessary: maximum trunk cable distances are extended to 2 Km.
About the TDRMIM result is enhanced signal integrity and extended maximum lobe cable distances. For length specifications for UTP and STP lobe cables, see Section 2.2.2, UTP Cable Lengths to Stations and Section 2.3.2, STP Cable Lengths to Stations. Ring Speed Fault Protection 3 TDRMIMs provide Ring Speed Fault Protection on each lobe port to protect against beaconing conditions caused by stations inserting at the wrong ring speed.
About the TDRMIM As with port-switching MIMs, the cluster-switching TDRMIM requires the support of a port-assigning management module such as the TRMM-2 or TRMM-4 to switch its connections. With this support, the Clusters may be individually assigned to any of the four vertically stacked FNB rings (illustrated in Figure 1-4) on the MMAC backplane. Port-Switching MIMs TRMM-4 TRXMIM TRXMIM TRXMIM TRXMIM TDRMIM TSXMIM CRM2-R/T FNB ring 1 FNB ring 2 FNB ring 3 FNB ring 4 Figure 1-4.
About the TDRMIM FNB 1 while the TRMM-2’s STATION port interface is operating through that Cluster. For if allowed, such a switch would create the prohibited condition of redundant management on FNB 1. 1.2.4 Automatic Configuration at Power-Up The management module in the TDRMIM’s host MMAC stores all user-configured ring assignments and speed settings in its battery-backed NVRAM (Non-Volatile Random Access Memory).
About the TDRMIM 1.2.5 Support for Passive MAU Workgroups The TDRMIM’s RJ45 lobe ports default to their TCU configuration to support station connections, but they also offer a Multi Ring Out override to support connections to passive MAU (Multi-Station Access Unit) workgroups.
About the TDRMIM DAISY-CHAIN CONFIGURATION Ring In (8 Stations) Ring Out Ring Out Ring In (8 Stations) Ring Out Ring In Ring In (8 Stations) Ring Out Ring In (8 Stations) Ring Out Multi-Station Access Units When MAUs are daisy-chained, they are connected as a single collective entity. To isolate the hub from a beaconing MAU station, the entire chain must be bypassed. All MAU stations lose their connection to the hub if beaconing occurs on just one MAU station.
Supplemental Information 1.2.7 LANVIEW LEDs The LANVIEW LED system comprises several LEDs, located on the front panel of the TDRMIM. Operating as an “at-a-glance,” visual diagnostic and status monitoring system, they light, blink, and flash in various colors to indicate various network and module-specific conditions, thereby facilitating the quick diagnosis of physical layer network problems. The system is discussed in detail in Section 4.2, LANVIEW LED Signals. 1.2.
Supplemental Information 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) 1.3.
CHAPTER 2 Requirements and Specifications Before installing the TDRMIM, review the recommendations and requirements outlined in this chapter. Failure to follow these guidelines could result in poor network performance. 2.1 General Cabling Considerations Take care in planning and preparing the cabling and connections for the network. The reliability of data transmission on the network depends on the LAN’s susceptibility to error-inducing crosstalk and noise.
General Cabling Considerations 2.1.3 Installation Recommendations For optimum network performance, make sure that twisted pair cabling installations comply with the following recommendations: • Keep UTP cabling free of splices, stubs, or bridged taps. • Do not use more than two punch-down blocks between TCU ports and wall outlets. • Properly ground all metal troughs, ducts, etc. carrying Token Ring cabling.
UTP Cabling Specifications Table 2-1. Token Ring Network Performance Requirements Maximum Total Signal Attenuation Maximum Total Ambient Noise Minimum NEXT* loss per 100 m ≤ 14.5dB ≤ 20 dBmV ≥ 30.5 dB *NEXT = Near-End Crosstalk All STP cables of IBM Type 1, 2, 6, and 9 meet Token Ring network performance requirements. All category 5, all category 4, and some category 3 (see Section 2.2.2, UTP Cable Lengths to Stations) UTP cables also meet these requirements.
UTP Cabling Specifications Table 2-2. UTP Cable Category Specifications UTP Cat. Operating Frequency Electrical Impedance Signal Attenuation per 100m NEXT loss (@ ≥100m) 3 4 MHz ≤ 100Ω ±15% ≤ 5.6 dB ≥ 32 dB 16 MHz ≤ 100Ω ±15% ≤ 13.1 dB ≥ 23 dB* 4 MHz ≤ 100Ω ±15% ≤ 4.3 dB ≥ 47 dB 16 MHz ≤ 100Ω ±15% ≤ 8.9 dB ≥ 38 dB 4 MHz ≤ 100Ω ±15% ≤ 4.3 dB ≥ 63 dB 16 MHz ≤ 100Ω ±15% ≤ 8.2 dB ≥ 44 dB 4 5 *below Token Ring performance requirement of ≥ 30.5 dB.
STP Cabling Specifications 2.2.2 UTP 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 2-3. Cable routing, connector attenuation, noise, and crosstalk can adversely affect the maximum lobe length. Table 2-3. UTP Maximum Lobe Lengths.
STP Cabling Specifications Table 2-4. STP Cable Type Specifications. Attenuation per... IBM Type Operational Frequency Impedance 1&2 4 MHz 6&9 1000 m (1000 ft) ≤ 150Ω ±15% ≤ 22 dB (≤ 6.7 dB) 16 MHz ≤ 150Ω ±15% ≤ 45 dB (≤ 13.7 dB) 4 MHz ≤ 150Ω ±15% ≤ 33 dB (≤ 10.0 dB) 16 MHz ≤ 150Ω ±15% ≤ 66 dB (≤ 20.0 dB) IBM Type 1 consists of two shielded twisted pairs (STP) of 22 AWG solid wire for data. It is often used for the longest cable runs within the walls of buildings.
Fiber Optic Cable Specifications Table 2-5. STP Maximum Lobe Lengths. Maximum Length STP Types @ 4 Mbps @ 16 Mbps meters (feet) meters (feet) 1&2 300 (984) 150 (492) 6&9 200 (656) 100 (328) Mixed STP Cable Types 1 If cable types are to be mixed in the installation, compensations must be made for the different cable attenuations. For example, Type 6 & 9 cables can be run for only 2/3 the distance of Type 1: 100 meters (Type 1) ≈ 66 meters (Types 6, 9). 2.
TDRMIM Operating Specifications 2.5 TDRMIM 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. 2.5.1 Switchblock SW1 The TDRMIM has a switchblock called SW1 (see Figure 2-1).
TDRMIM Operating Specifications OFF Fiber Optic Keying Sequence 8 8 7 7 6 6 [Unused] 5 5 [Unused] 4 4 [Leave OFF] 3 3 FNB Ring 1 Speed Default: ON = 16 Mbps; OFF = 4 Mbps 2 2 1 1 ON Ring Ports 1 Ring In Ring Ports 1 Ring Out Ring Ports 2 Ring In ON = 802.5 OFF = ctron Ring Ports 2 Ring Out Figure 2-2. Switchblock SW1 with Factory Default Settings Default Ring Speed of FNB Ring 1 1 Use Switch #1 to set the default ring speed for FNB ring 1: ON for 16 Mbps, and OFF for 4 Mbps.
TDRMIM Operating Specifications 2.5.2 Media Filters When connecting Token Ring stations that are not equipped with a Type 3 Media Filter to the TDRMIM-22A (UTP), install a Type 3 Media Filter (such as the Cabletron Systems TRMF or TRMF-2) in line with the lobe cable at the Token Ring station connection. 2.5.3 Connector Types TCUs for Twisted Pair Cabling 1 The TDRMIM’s lobe ports are internally crossed-over to provide connection of straight-through station lobe cabling.
TDRMIM Operating Specifications MIC Connector RJ45 Plug 8 Black Green 1 Orange Transmit -..... Receive +..... Receive -..... Transmit +..... Blue Pin 3 ....... to ......Black ....... Transmit Pin 4 ....... to ......Blue ......... Receive + Pin 5 ....... to ......Green ..... Receive Pin 6 ....... to ......Orange... Transmit + Figure 2-4.
Other Specifications order is continuous, wrapping directly from the MMAC’s last inserted port to the first—from the bottom of the list, right back to the top. 2.5.5 LANVIEW LEDs There are a number LEDs on the front panel of each TDRMIM. Each individually labelled LED uses a simple combination of colors and ON/OFF states to provide information about its attributed component.
Other Specifications This product conforms to the following standards: Safety 1 • UL 1950 • CSA C22.2 No.950 • EN 60950 EMI 2 • FCC Part 15 Class A • EN 55022 Class A • VCCI Class I EMC 3 • EN 50082-1 • IEC 801-2 • IEC 801-3 • IEC 801-4 2.6.4 Service MTBF (Mean Time Between Failure): 603,339 hrs.
CHAPTER 3 Installation This chapter explains how to install the TDRMIM into a Cabletron Systems MMAC product and to connect network devices to the TDRMIM’s lobe ports. ! This unit must be installed by qualified personnel only. Failure to follow instructions could result in the presence of a shock hazard. CAUTION 3.1 General Considerations Before installing and operating the TDRMIM, confirm that the network meets the requirements listed in Chapter 2, Requirements and Specifications.
Installation 3.2.1 Unpacking the TDRMIM Unpack and visually inspect the TDRMIM for damage: ! CAUTION Electrostatic Discharge (ESD) can damage the module. Take precautions against ESD. When handling the module, hold only the edges of the board or the metal front panel. Avoid touching the components or surface of the board. 1. Carefully remove the TDRMIM from the shipping box. Save the box and materials for future transport. 2.
Installation TRMM-4 SN RESET CPU LWRP LWRP NSRT NSRT 16Mb 16Mb XMT MMAC M8 FNB XMT RCV RCV R I N G R I N G 1 2 TDRMIM-22A SN LWRP LWRP NSRT NSRT 16Mb 16Mb XMT XMT RCV RCV R I N G R I N G 3 4 BYP RING 1 16Mb RING 2 16Mb RING 3 16Mb IN USE IN USE IN USE IN USE IN USE IN USE 7 8 9 4 5 6 10 11 12 1 X PEN 2 X LNK TX RI 3 X 4 X ERR MGMT RING 4 16Mb AUX 1 16Mb AUX 2 16Mb 1 2 3 RX R I N G C O P O R T S PEN LNK 1 5M X1 TX KNURLED KNOBS RO 6 X RX C O M 7 X PEN
Installation Table 3-1. LANVIEW LED Activity at First Boot-up (Continued) At moment of Power-on After Management Module boot-up After Default boot-up (management module not present) determined by Switch #1 determined by management determined by Switch #1 other rings 16 Mb YELLOW determined by management YELLOW IN USE (all) off off off Port (all) RED off off PEN (all) GREEN determined by management GREEN LNK (all) off off off LED label Ring 1 16 Mb Boot-up may take a few minutes.
Installation signal crossover or null modem effect, the TCU and Token Ring station connectors are wired so that the transmit pair from the TDRMIM connects to the receive pair in the station and the receive pair from the TDRMIM connects to the transmit pair in the station. Table 3-2 provides a cross-reference of pinouts for connections that may be encountered along the length of lobe cabling. Table 3-2.
Installation Token Ring Station TDRMIM-22A RX+ 6 6 RX– 3 3 TX+ 4 4 TX– 5 5 TCU port RJ45 jack UTP Lobe Cable TX+ TX+ TX– TX– RX+ RX+ RX– RX– 6 3 4 5 TYPE 3 MEDIA FILTER (internal or external) TX+ 5 TX– 1 RX+ 6 RX– Token Ring Station MIC coupling 6 RX– 3 3 TX+ 4 4 TX– 5 5 STP lobe cable TX+ TX+ TX– TX– RX+ RX+ RX– RX– Shield O O B B R R G G Shield STP jumper cable TX+ TX+ TX– TX– RX+ RX+ RX– RX– Shield RJ45 plug 9 9 TX+ 5 5 TX– 1 1 RX
Installation 3.2.6 Connecting Ring In/Ring Out Cables The fiber cable ends should be color-coded so that the colors are switched at either end of the cable (as in Figure 3-3) ensuring that if the user keeps the color/port connection consistent, the cables will be properly crossed over (as in Figure 3-4). TRANSMIT RECEIVE RECEIVE TRANSMIT Figure 3-3. Cross-Coded Cable Ends TX RX TRANSMIT TRANSMIT RECEIVE RECEIVE TX RX Figure 3-4.
Installation and test the installation thoroughly to ensure that all stations are able to receive and that data is being relayed without error. Verify also that the networking software is configured properly to match the installed network.
CHAPTER 4 Testing and Troubleshooting This section contains procedures to verify that the connections between the TDRMIM and the Token Ring stations are functioning properly. A description of the LANVIEW LED system is also provided. 4.1 Installation Checkout Perform the following check to confirm proper installation of the TDRMIM: 1. Confirm that power settings for all connected Token Ring stations and the MMAC match the AC power source (120 Vac or 240 Vac) and are powered on. 2.
LANVIEW LED Signals When these checks have been successfully cleared, the TDRMIM is ready for normal 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 4-1) to determine network status, diagnose network problems, and isolate faulty nodes or trunk segments.
LANVIEW LED Signals ERR—Error 1 This LED should be off during normal operations. ERR ERR R If the LED is RED, there is a hardware failure within the module. If this occurs, contact Cabletron Systems Technical Support. BYP—Bypass If the LED is off, at least one port is inserted into the FNB rings. BYP BYP 2 G If the LED is GREEN, no ports are inserted into the FNB rings. This occurs under the following conditions: • The module is executing normal start-up procedure.
LANVIEW LED Signals 16MB—Ring Speed YELLOW indicates that the ring speed is set to 16 Mbps. Y 16 MB 4 OFF indicates that the ring speed is set to 4 Mbps. 16 MB IN USE—Ring In Use 5 These LEDs indicate the status of network communications on the associated ring. They do not reflect ring activity that excludes this TDRMIM (e.g. on rings bypassed from the TDRMIM), nor do they indicate whether a Ring Port connection has been made to an FNB ring.
LANVIEW LED Signals During normal operation, the LEDs for TCU ports operate as follows: G 12 GREEN indicates that the TCU port is inserted into its assigned ring. 12 G BLINKING GREEN indicates that a Token Ring station is phantom linked to the port, but the TCU port is disabled by management command.
LANVIEW LED Signals LNK Page 4-6 G GREEN indicates that the associated RI or RO port is linked.
APPENDIX A Introduction to Port Switching A.1 Introduction This appendix introduces the concepts of port switching, port assignment, and the four-ring Flexible Network Bus (FNB). These concepts are fundamental to the basic functionality of a growing number of Cabletron Systems Token Ring products. A.2 The Flexible Network Bus (FNB) The FNB is a data bus that spans the entire width of the backplane of the Multi Media Access Center (MMAC).
With Port Switching TRMM TRMIM TRMIM TRMIM TRMMIM TRMIM TRMIM TRMIM FNB ring segment B FNB ring segment A FNB ring wrapped at TRMMIM’s right FNB interface. Figure A-1. FNB Segmentation Produces Two Isolated FNB Rings Management of Segmented FNB Rings When the FNB is segmented, as shown in Figure A-1., the modules on one segment are isolated from modules on another FNB segment, and management interfaces with one ring are isolated from other FNB segments as well.
Port-Switching MIMs TRMM-4 TRXMIM TRXMIM TRXMIM TRXMIM TDRMIM TSXMIM CRM2-R/T FNB ring 1 FNB ring 2 FNB ring 3 FNB ring 4 Figure A-2. Four Vertically Stacked FNB Rings Port-switching MIMs can assign ports on an individual basis to connect to any of four FNB rings, thereby providing multiple users with access to multiple rings through a single MIM. Refer to Figure A-3. for a comparative illustration of the connectivity afforded by each kind of MIM.
With Port Switching TRMIMs TRXMIMs TRMM-2 TRXMIM TRXMIM TRXMIM TRMIM TRMIM TRMIM TRMIM External Mgmt. Interface Segmented FNB ring 1 FNB ring 1 FNB ring 2 FNB ring 3 FNB ring 4 Figure A-3. Mixed MIMs (In this example, only FNB ring 1 and the Segment are managed.) Management For a management module to fully manage a ring, it requires a network-monitoring interface with the ring.
TRXMIM-44A SN ERR BYP RING 1 16Mb RING 2 16Mb RING 3 16Mb RING 4 16Mb AUX 1 16Mb AUX 2 16Mb MGMT IN USE IN USE IN USE IN USE IN USE IN USE 13 14 15 19 20 21 1 7 2 3 8 9 16 17 18 22 23 24 4 5 6 -PORTS- 10 11 12 13 X 1 X 14 X 2 X 15 X 3 X 16 X 4 X 17 X 5 X 18 X 6 X 19 X 7 X 20 X 8 X 21 X 9 X 22 X 10 X 23 X 11 X 24 X Port assignments made by the Management Module are executed internally by the multi-ring (port-switching or cluster-switching) MIM.
Configuration Specifications should be grouped together in the right-most slots of the MMAC as shown in Figure A-3. Single-ring MIMs still have the ability to segment FNB ring 1 (as shown in Figure A-3.). They still view the FNB as having only one ring and are not affected by the utilization of FNB rings 2, 3, or 4 by other MIMs in the MMAC.
