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Cabletron Systems BRIM-F6 - page 1
BRIM-F6 USER’S GUIDE BRIM-F Book Page 1 Monday, January 29, 1996 9:26 AM ...
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Cabletron Systems BRIM-F6 - page 2
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Cabletron Systems BRIM-F6 - page 3
BRIM-F6 User’s Guide i CONTENTS CHAPTER 1 INT R ODUCTIO N ........................................................ . 1-1 1.1 Using Thi s Manua l ...................................................................... . 1-2 1.2 Getting Hel p ................................................................................ . 1-2 1.3 BRIM-F6 O v e r v ...
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Cabletron Systems BRIM-F6 - page 4
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Cabletron Systems BRIM-F6 - page 5
BRIM-F6 User’s Guide Page 1-1 CHAPTER 1 INTR ODUCTION Welcome to the Cabletron Systems BRIM-F6 User’s Guide . This manual describes features, explains installation procedures, and pro vides specifications for the BRIM-F6 — Cabletron Systems FDDI Bridge/ Router Interface Module (BRIM). The BRIM-F6 resides in, and provides additional connectiv ...
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Cabletron Systems BRIM-F6 - page 6
CHAPTER 1: INTRODUCTION Page 1-2 BRIM-F6 User’s Guide 1.1 Using This Manual Read through this manual completely to familiarize yourself with its content and to gain an understanding of the features and capabilities of the BRIM-F6. In addition to having a general w orking kno wledge of Ethernet and IEEE 802.3 type data communications networks and ...
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Cabletron Systems BRIM-F6 - page 7
BRIM-F6 Overview BRIM-F6 User’s Guide Page 1-3 1.3 BRIM-F6 Overview The BRIM-F6 is an FDDI Bridge Router Interface Module (BRIM) de veloped for use in Cabletron’ s MMAC-FNB and MicroMMA C. The BRIM-F6 can be used to provide a high-speed uplink from lo wer speed networks such as Ethernet to a 100 Mbps FDDI backbone. 1.4 BRIM-F6 Features Connecti ...
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Cabletron Systems BRIM-F6 - page 8
CHAPTER 1: INTRODUCTION Page 1-4 BRIM-F6 User’s Guide LANVIEW Diagnostic LEDs The BRIM-F6’ s front panel LEDs help you diagnose Bridge, Port, and Network status. 1.5 Related Documentation Use the follo wing documentation to supplement the procedures, and other technical data in this manual. This manual may reference procedures in these document ...
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Cabletron Systems BRIM-F6 - page 9
BRIM-F6 User’s Guide Page 2-1 CHAPTER 2 INST ALLA TION This chapter contains instructions for unpacking the BRIM-F6, installing FPIMs, and installing the BRIM-F6 into Cabletron de vices that support BRIM technology . Note : The BRIM-F6 is not shipped with the FPIMs installed. Y ou must or der the corr ect FDDI Port Interface Modules based upon yo ...
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Cabletron Systems BRIM-F6 - page 10
CHAPTER 2: INSTALLATION Page 2-2 BRIM-F6 User’s Guide 2.2 Installing the FPIMs T o install an FPIM into the BRIM-F6: 1. Remove the screws securing the FPIM coverplate and the coverplate. See Figure 2-1. 2. Insert the connector pins of the FPIM into the connector on the BRIM-F6. See Figure 2-2. Figure 2-1. Removing the FPIM Co verplate 3. Press do ...
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Cabletron Systems BRIM-F6 - page 11
Installing the BRIM-F6 BRIM-F6 User’s Guide Page 2-3 Figure 2-2. Installing FPIMs 2.3 Installing the BRIM-F6 This section contains procedures on ho w to install a BRIM-F6 to upgrade or change the capabilities of a de vice’ s motherboard. Note: Cabletr on pr ovides disposable wrist straps and faceplate and standoff scr ews in both the BRIM packa ...
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Cabletron Systems BRIM-F6 - page 12
CHAPTER 2: INSTALLATION Page 2-4 BRIM-F6 User’s Guide 2.3.1 Installing a BRIM-F6 into a MIM T o install a BRIM-F6 in a Media Interface Module (MIM) that supports BRIM technology (e.g., EMM-E6): Note : W e recommend that you power down your hub even though Cabletr on MIMs have “hot swap” capabilities. 1. Po wer-do wn your MMAC hub . 2. Disconn ...
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Cabletron Systems BRIM-F6 - page 13
Installing the BRIM-F6 BRIM-F6 User’s Guide Page 2-5 Figure 2-3. Installing the BRIM-F6 The BRIM-F6 requires a special 24 pin ribbon connector in addition to the standard 96 pin BRIM connector . This ribbon connector allo ws the BRIM-F6 to use in-line filtering functionality . BRIM-F6 XMT PWR RCV STS FPIM A WRP LNK TWR LNK FPIM B Coverplate/ Scr ...
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Cabletron Systems BRIM-F6 - page 14
CHAPTER 2: INSTALLATION Page 2-6 BRIM-F6 User’s Guide T o install the BRIM-F6 ribbon cable: 1. Insert one ribbon cable connector into the ribbon cable jack on the BRIM. (See Figure 2-4.) Figure 2-4. Installing the BRIM-F6 Ribbon Cable Caution: The ribbon cable connector only fits into the ribbon cable jack one way . Fit the tab on the connector ...
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Cabletron Systems BRIM-F6 - page 15
Installing the BRIM-F6 BRIM-F6 User’s Guide Page 2-7 3. Insert the remaining ribbon cable connector into the ribbon cable jack on the MIM. 4. Press down on the connector until the clips on the jack snap into a vertical locked position. After returning the MIM to the chassis, returning po wer to your hub, and reconnecting to the network, the BRIM- ...
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Cabletron Systems BRIM-F6 - page 16
CHAPTER 2: INSTALLATION Page 2-8 BRIM-F6 User’s Guide 9. Press down firmly on the back of the BRIM until the pins slide all the way into the connector holes. Note: Make sur e that the standoffs align with the standoff scr ew holes. 10. Reinstall the coverplate/faceplate screws and standoff screws. Note: Faceplate and support post scr ews ar e pr ...
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Cabletron Systems BRIM-F6 - page 17
BRIM-F6 User’s Guide Page 3-1 CHAPTER 3 USING LANVIEW LANVIEW is a visual diagnostic and status monitoring system de veloped by Cabletron Systems. LANVIEW LEDs (see Figure 3-1) help you troubleshoot Bridge, Port, and Network problems. The follo wing sections describe BRIM-F6 LEDs. Figure 3-1. BRIM-F6 LANVIEW LEDs PWR (P o wer) When ON, this Green ...
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Cabletron Systems BRIM-F6 - page 18
CHAPTER 3: USING LANVIEW Page 3-2 BRIM-F6 User’s Guide TWR (T wisted Ring) When ON, this Red LED indicates an undesirable cable connection. TWR illuminates when you connect A to A, or B to B, instead of A to B, or B to A. The BRIM-F6 supports undesirable configurations, b ut alerts you to them. (Appendix A summarizes FDDI connection rules.) WRP ...
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Cabletron Systems BRIM-F6 - page 19
BRIM-F6 User’s Guide Page 4-1 CHAPTER 4 SPECIFICA TIONS This chapter lists the operating specifications for the BRIM-F6. Cabletron Systems reserves the right to change these specifications at an y time, without notice. 4.1 Fiber Optic Interface Depending on the FPIM, interfaces ha ve the follo wing characteristics: Multimode Specifications Mul ...
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Cabletron Systems BRIM-F6 - page 20
CHAPTER 4: SPECIFICATIONS Page 4-2 BRIM-F6 User’s Guide Single Mode Specifications Multimode Receiver (Signal Detect) Assert power: -33.0 dBm typical -31.0 dBm maximum Assert time: 10 µ sec typical 100 µ sec maximum Deassert power: -36.0 dBm typical -45.0 dBm minimum Deassert time: 10 µ sec typical 350 µ sec maximum Hysteresis: 1.5 dB minimu ...
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Cabletron Systems BRIM-F6 - page 21
Single Mode Specifications BRIM-F6 User’s Guide Page 4-3 Single Mode Receiver Optical wavelength: 1330 nm typical Optical input: (avg. sensitivity) -31.0 dBm minimum -14.0 dBm maximum Output rise time: 3 nsec maximum Output fall time: 3 nsec maximum Supply current: 115 mAmps maximum Single Mode Receiver (Signal Detect) Assert power: -33.0 dBm typ ...
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Cabletron Systems BRIM-F6 - page 22
CHAPTER 4: SPECIFICATIONS Page 4-4 BRIM-F6 User’s Guide Unshielded T wisted Pair Specifications Unshielded Twisted Pair Transmitter Amplitude 1.080 Vpk maximum 0.920 Vpk minimum Rise time 2 nsec minimum 4 nsec maximum Fall time 2 nsec minimum 4 nsec maximum Rise/Fall variation 0.5 nsec maximum Overshoot 5% maximum Droop (14 symbols) 3% maximum U ...
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Cabletron Systems BRIM-F6 - page 23
Shielded Twisted Pair Transmitter Specifications BRIM-F6 User’s Guide Page 4-5 Shielded T wisted Pair T ransmitter Specifications 4.2 Cable Specifications The FDDI Physical Layer Medium Dependent (PMD), T wisted Pair Physical Layer Medium Dependent (TP-PMD), and Single Mode Fiber Physical Layer Medium Dependent (SMF-PMD) ANSI standards define c ...
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Cabletron Systems BRIM-F6 - page 24
CHAPTER 4: SPECIFICATIONS Page 4-6 BRIM-F6 User’s Guide Multimode Fiber: Core diameter: 62.5 µ m nominal Cladding diameter: 128.0 µ m maximum 122.0 µ m minimum Cable attenuation: ≤ 2.5 dB/km typical Single Mode Fiber: Core diameter: 8.7 µ m +/- 0.5 µ m Cladding diameter: 127.0 µ m maximum Cable attenuation: ≤ 0.5 dB/km typical Multimode ...
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Cabletron Systems BRIM-F6 - page 25
Twisted Pair Cable Length BRIM-F6 User’s Guide Page 4-7 Maximum total cable length: 100 km (62 miles) — dual ring 200 km (124 miles) — wrapped Maximum twisted pair cable length between adjacent nodes: 100 m (328.1 feet) 4.3 Twisted Pair Pinout Configuration This section provides the RJ-45 pinout configuration for Unshielded T wisted Pair (UT ...
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Cabletron Systems BRIM-F6 - page 26
CHAPTER 4: SPECIFICATIONS Page 4-8 BRIM-F6 User’s Guide 4.4 Environment Storage temperature: -40 ° C minimum 85 ° C maximum Operating temperature: 5 ° C minimum 40 ° C maximum Operating humidity: 5% to 95% non-condensing 4.5 Safety This unit meets the safety requirements of UL 1950, CSA C22.2 No. 950, and EN 60950; the EMI requirements of FCC ...
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Cabletron Systems BRIM-F6 - page 27
BRIM-F6 User’s Guide Page A-1 APPENDIX A B ASIC FDDI NETW ORKS This Appendix covers basic Fiber Distrib uted Data Interf ace (FDDI) network concepts relating to FDDI network design and installation. ANSI Standard X3T9.5 provides greater detail on FDDI access methods. Reference this standard whene ver you need more complete information. Specific ...
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Cabletron Systems BRIM-F6 - page 28
APPENDIX A: BASIC FDDI NETWORKS Page A-2 BRIM-F6 User’s Guide When a station has a frame waiting to transmit, the station captures the token at the ne xt opportunity , transmits the data frame, and then reissues the token. (A T oken Holding T imer (THT) controls the maximum length of time that any station may retain the tok en.) Each station rece ...
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Cabletron Systems BRIM-F6 - page 29
Reliability BRIM-F6 User’s Guide Page A-3 Figure A-1. T ypical FDDI Physical Installation A.3 Reliability FDDI networks employ a ring topology and are inherently vulnerable to the frailties of each ring segment and f ailures of indi vidual stations. The ring of trees topology reduces the risk of a single node bringing the entire network do wn. A ...
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Cabletron Systems BRIM-F6 - page 30
APPENDIX A: BASIC FDDI NETWORKS Page A-4 BRIM-F6 User’s Guide Figure A-2. Wrapping a Broken Ring A.4 ANSI Standard X3T9.5 The X3T9.5 standard includes: Station Management (SMT), Media Access Control (MA C), Physical Layer Medium Dependent (PMD) standards and Physical Layer Protocol (PHY). Each section defines a unique entity of the FDDI station ...
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Cabletron Systems BRIM-F6 - page 31
ANSI Standard X3T9.5 BRIM-F6 User’s Guide Page A-5 Figure A-3. FDDI Structure and the OSI Network Model The PMD standard establishes the physical characteristics of the network connection, including the fiber optic transmitter po wer le vels, recei v er sensiti vity , the fiber optic cable type, the type of connectors, and acceptable losses bet ...
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Cabletron Systems BRIM-F6 - page 32
APPENDIX A: BASIC FDDI NETWORKS Page A-6 BRIM-F6 User’s Guide Other functions of the PHY include generation of a 125 Mhz transmit clock, synchronization of the recei ve clock with an upstream transmitter , encoding and decoding for media control symbols, and in some applications, buf fering for the incoming bit stream. The MA C entity resides on ...
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Cabletron Systems BRIM-F6 - page 33
ANSI Standard X3T9.5 BRIM-F6 User’s Guide Page A-7 SMT (Station Management) manages the FDDI station. It controls internal FDDI station processes and protocol compliance and provides an interface for human interv ention. Internal SMT management functions consist of three major categories: SMT Frame Services, Ring Management (RMT), and Connection ...
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Cabletron Systems BRIM-F6 - page 34
APPENDIX A: BASIC FDDI NETWORKS Page A-8 BRIM-F6 User’s Guide Connection Management (CMT) controls physical layer insertion and remov al of stations. CMT has three main components: • Entity Coordination Management (ECM) controls bypass switches and coordinates trace (recov ery) functions. • Configuration Management (CFM) controls PHY and MA ...
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Cabletron Systems BRIM-F6 - page 35
FDDI Devices BRIM-F6 User’s Guide Page A-9 Figure A-6. Dual Homing T opology Concentrator 3 in Figure A-6 has redundant connections to the main ring through either concentrator 1 or 2. The FDDI connection rules only permit one acti ve connection, Port B. If a cable failure se vers concentrator 3’ s connection to concentrator 2, CFM activ ates P ...
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Cabletron Systems BRIM-F6 - page 36
APPENDIX A: BASIC FDDI NETWORKS Page A-10 BRIM-F6 User’s Guide Each physical ring connection requires: • one PMD • one PHY . A SAS consists of: • one SMT • one MA C • one PMD • one PHY . A D AS consists of: • two PMDs • two PHYs. Figure A-7. V alid Station Configurations PHY PMD Single Attached Concentrator Dual Attached Concentr ...
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Cabletron Systems BRIM-F6 - page 37
FDDI Devices BRIM-F6 User’s Guide Page A-11 FDDI de vices physically attach to the ring using Fixed Shroud Duple x (FSD) media interface connectors. The X3T9.5 Physical Layer , PMD standard defines four connector types (see Figure A-7). These connectors provide proper trunk fiber alignment for each of the v alid configurations. T ypes A, B, an ...
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Cabletron Systems BRIM-F6 - page 38
APPENDIX A: BASIC FDDI NETWORKS Page A-12 BRIM-F6 User’s Guide Optical bypass switches, concentrators, and bridges exist throughout FDDI networks. These devices allo w creation of ring topologies that meet the specific needs of dif ferent network applications. Repeaters, often found in other network topologies, do not e xist as entities for FDDI ...
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Cabletron Systems BRIM-F6 - page 39
FDDI Devices BRIM-F6 User’s Guide Page A-13 Figure A-9. Optical Bypass Switch A concentrator is a hub . It pro vides connections to the dual ring for single attached stations and controls their access to the ring. The netw ork can optically bypass each main ring connection if the attached station becomes disabled or when the branch cable is disco ...
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Cabletron Systems BRIM-F6 - page 40
APPENDIX A: BASIC FDDI NETWORKS Page A-14 BRIM-F6 User’s Guide Figure A-10. FDDI Devices A.7 Design Considerations For FDDI Networks The main v ariables of interest to the FDDI network designer include ring length, dri ve distance (distance between nodes), and the maximum number of stations. While many f actors determine the limits for these desi ...
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Cabletron Systems BRIM-F6 - page 41
Design Considerations For FDDI Networks BRIM-F6 User’s Guide Page A-15 T o translate fiber path to ring length, remember that FDDI networks contain two counter -rotating rings. Under normal conditions (no failed segment), the ring length remains the same as the fiber path length. Ho we ver , if a wrap occurs, the length of the fiber path lengt ...
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Cabletron Systems BRIM-F6 - page 42
APPENDIX A: BASIC FDDI NETWORKS Page A-16 BRIM-F6 User’s Guide The attenuation of the typical multimode fiber optic cable used in FDDI networks is 2.5 dB/km or 5 dB for the 2 km maximum node separation. When installing optical bypass switches, each switch could add 2.5 dB to the attenuation. W ith an 11 dB budget to work with, and 5 dB e xpended ...
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Cabletron Systems BRIM-F6 - page 43
Design Considerations For FDDI Networks BRIM-F6 User’s Guide Page A-17 Figure A-11. Physical Device Connections DAS 2 DAC 2 SAC SAS SAS SAS SAS SAS 16 PHYSICAL CONNECTIONS 2 2 2 1 + 1 2 2 2 2 BRIM-F Book Page 17 Monday, January 29, 1996 9:26 AM ...
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