BRIM-E6 USER’S GUIDE CABLETRON SYSTEMS, P. O.
NOTICE 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 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 SYSTEMS, INC. PROGRAM LICENSE AGREEMENT IMPORTANT: Before utilizing this product, carefully read this License Agreement. This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (the “Program”) contained in this package. The Program may be contained in firmware, chips or other media.
NOTICE 2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
TABLE OF CONTENTS CHAPTER 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 USING THIS MANUAL ................................................................... 1 GETTING HELP ............................................................................. 2 BRIM-E6 OVERVIEW..................................................................... 2 BRIM-E6 FEATURES..................................................................... 2 BRIM-E6 SPECIFICATIONS ..........................................................
CONTENTS APPENDIX A A.1 A.2 A.3 A.4 A.5 EPIM-T (10BASE-T TWISTED PAIR PORT) ................................25 EPIM-F1 AND EPIM-F2 (MULTIMODE FIBER OPTIC PORTS) ..26 EPIM-F3 (SINGLE MODE FIBER OPTIC PORT) .........................27 EPIM-C (BNC PORT) ...................................................................29 EPIM-A AND EPIM-X (AUI PORTS) .............................................30 APPENDIX B B.1 EPIM SPECIFICATIONS EPIM CABLE REQUIREMENTS CABLE REQUIREMENTS ..............................
CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems BRIM-E6 User’s Guide. This manual explains how to install the Bridge/Router Interface Module (BRIM) for Ethernet into Cabletron products that support BRIM technology (e.g., the EMM-E6 or MicroMMAC). It also explains BRIM-E6 features and specifications. 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-E6.
CHAPTER 1: INTRODUCTION 1.2 GETTING HELP If you need additional support related to the BRIM-E6, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: By phone ..........................(603) 332-9400 Monday-Friday; 8am - 8pm EST By CompuServe® .............GO CTRON from any! prompt By Internet mail ...............support@ctron.com 1.
BRIM-E6 SPECIFICATIONS EPIM Connectivity EPIMs allow you to configure the BRIM-E6 to support a variety of media types. Cabletron Systems offers the EPIMs shown in Table 1-1. Table 1-1. EPIMs EPIM MEDIA TYPE CONNECTOR EPIM-A AUI DB15 (Female) EPIM-C 10BASE-2 Thin Coaxial BNC EPIM-T 10BASE-T Unshielded Twisted Pair RJ45 EPIM-X Standard Transceiver DB15 (Male) EPIM-F1 Multimode Fiber SMA EPIM-F2 Multimode Fiber ST EPIM-F3 Single Mode Fiber ST 1.
CHAPTER 1: INTRODUCTION 1.6 ETHERNET BRIDGING Bridging Overview Ethernet bridges read in packets and make decisions to filter or forward based on the destination address of the packet. The simple filter/forward decision process allows a bridge to segment traffic between two networks, keeping local traffic local. This process increases the availability of each network while still allowing traffic destined for the opposite side of the bridge to pass.
ETHERNET BRIDGING As with repeaters, IEEE recommends a maximum number of bridges that can be in a signal path. With repeaters we are able to have a signal path of 4 repeaters, 5 segments. With bridges we can have a signal path of 7 bridges, 8 networks. The bridge count includes both local and remote bridges.
CHAPTER 1: INTRODUCTION If Bridge 2 fails to receive the Bridge 1 BPDUs during the period defined by "Hello Time", Bridge 2 will initiate a re-span by transmitting a topology change BPDU and eventually come on line to carry the network load. Bridges using STA can be utilized to create very fault tolerant networks. This section has presented only basic information about bridges and Spanning Tree Algorithm. For additional information, refer to the IEEE 802.1d draft specification. 1.
CHAPTER 2 INSTALLATION This chapter contains instructions for installing your BRIM-E6 into a Media Interface Module (MIM) or stand-alone product. It also explains how to install an EPIM into the BRIM-E6. Caution: Observe all static precautions while handling MIMs and EPIMs. 2.1 UNPACKING THE BRIM Unpack the BRIM as follows: 1) Remove the shipping box material covering the BRIM. 2) Carefully remove the module from the shipping box. Leave the module in its non-conductive bag until you are ready to install.
CHAPTER 2: INSTALLATION 2.2.1 Installing a BRIM-E6 in a MIM To install a BRIM-E6 in a MIM that supports BRIM technology (e.g., EMM-E6 or ESXMIM): Note: We recommend that you power-down your hub even though Cabletron MIMs have “hot swap” capabilities. 1. Power-down your MMAC hub. 2. Disconnect all cables from the MIM. Note the ports to which these cables attach. 3. Unscrew the top and bottom knurled knobs of the MIM face plate. 4.
INSTALLING BRIMs 6. Place your BRIM behind the MIM face plate. (See Figure 2-2.) -E6 IM BR K LN -T IM EP MT X B ST V N CL RC Figure 2-2. Installing the BRIM 7. Insert the connector pins of the BRIM-E6 into the mother board connector on the MIM. 8. Press down firmly on the back of the BRIM until the pins slide all the way into the connector holes. Note: The BRIM-E6 connector must fit securely on the mother board connector. 9.
CHAPTER 2: INSTALLATION 2.2.2 Installing a BRIM in a Hub To install a BRIM-E6 into a stand-alone hub that supports BRIM technology (e.g., MicroMMAC or NBR-620): 1. Power-down your hub. 2. Disconnect all cables from the hub. Note the ports to which these cables attach. 3. Remove the hub chassis cover. Note: Refer to your specific hub documentation for instructions on removing the hub chassis cover. 4. Remove the BRIM coverplate screws and the BRIM coverplate. (See Figure 2-1.) 5.
INSTALLING BRIMs 2.2.3 Installing an EPIM into the BRIM To install an EPIM into the BRIM: 1. Slide the EPIM into the BRIM slot. See Figure 2-3. BRIM-E6 STB XMT CLN RCV Figure 2-3. Installing an EPIM into the BRIM-E6 2. Press the EPIM connector firmly into the connector on the BRIM. 3. Tighten the EPIM screw.
CHAPTER 3 CONNECTING TO THE NETWORK This chapter outlines the procedure for connecting the BRIM-E6 to a network. 3.1 CONNECTING THE BRIM TO THE NETWORK The procedure for connecting network segments to the BRIM-E6 depends on which EPIM you install. Refer to the following list and perform the procedure described in the subsections that apply to your configuration: • • • • • EPIM-T EPIM-F1, F2, F3 EPIM-C EPIM-A EPIM-X 3.1.1 3.1.2 3.1.3 3.1.4 3.1.
CHAPTER 3: CONNECTING TO THE NETWORK Position X (crossed over) 1. RX+ 2. RX3. TX+ 4. NC 5. NC 6. TX7. NC 8. NC Position = (not crossed over) 1. TX+ 2. TX3. RX+ 4. NC 5. NC 6. RX7. NC 8. NC Figure 3-1. EPIM-T Cross-over Switch To connect an EPIM-T to a Twisted Pair Segment: 1. Insert the RJ45 connector on the twisted pair segment into the RJ45 port on the EPIM. See Figure 3-1. 2. Check that the EPIM’s LNK LED is on. If the LED is not on, perform each of the following steps until it is: a.
CONNECTING THE BRIM TO THE NETWORK 3.1.2 Connecting a Fiber Optic Link Segment to an EPIM-F1, EPIM-F2, or EPIM-F3 When connecting a fiber optic link segment to an EPIM-F1, F2, or F3 keep the following in mind: • If you are connecting a fiber optic link segment with SMA 906 connectors to an EPIM-F1 with SMA ports, ensure that half alignment sleeves are in place on each connector. A full alignment sleeve will damage the receive port. SMA 905 connectors do not need alignment sleeves.
CHAPTER 3: CONNECTING TO THE NETWORK Caution: Do not touch the ends of the fiber optic strands, and do not let the ends come in contact with dust, dirt, or other contaminants. Contamination of the ends can cause problems in data transmissions. If the ends become contaminated, clean them with alcohol using a soft, clean, lint free cloth. To connect a fiber optic link segment to an EPIM-F1, EPIM-F2, or EPIM-F3: 1.
CONNECTING THE BRIM TO THE NETWORK 3. Attach the fiber labeled 2 to the applicable transmit port labeled TX, on the module. 4. At the other end of the fiber optic cable, attach the fiber labeled 1 to the transmit port of the device. 5. Attach the fiber labeled 2 to the receive port. 6. Check that the EPIM’s LNK LED is on. If the LED is not on, perform the following steps until it is: a. Check that the power is turned on for the device at the other end of the link. b.
CHAPTER 3: CONNECTING TO THE NETWORK 2. If the Internal Termination switch is in the On position, connect the thin-net segment directly to the BNC port as shown in Figure 4-3. 3. If the Internal Termination switch is in the Off position: a. Attach a BNC tee-connector to the BNC port on the module. b. Attach the thin-net segment to one of the female connectors on the tee-connector. Note: You must terminate each segment attached to the tee-connector.
CONNECTING THE BRIM TO THE NETWORK 3.1.4 Connecting an AUI Cable to an EPIM-A Caution: Ensure that the external transceiver to which the BRIM-E6 PW will be connected does not have the signal quality error (SQE or R “heartbeat”) test function enabled. The BRIM-E6 will not operate if the transceiver E P I M - Ahas the SQE test function enabled, and the network will be unusable. Refer to the applicable transceiver manual. To connect an EPIM-A to an external network segment: 1.
CHAPTER 3: CONNECTING TO THE NETWORK 6. If the PWR LED is on with the AUI cable disconnected, continue with the following checks: a. Check the AUI connections for proper pinouts. The pinouts for the transceiver connection are listed in Appendix A. b. Check the cable for continuity. c. Reconnect the AUI cable to the BRIM-E6 and the device. If the LED is still not on after reconnecting the segment, contact Cabletron Systems Technical Support. 3.1.
FINISHING THE INSTALLATION ON Position (Toward Back of EPIM) ON OFF OFF Position (Toward Front of EPIM) Figure 3-5. The EPIM-X 3.2 FINISHING THE INSTALLATION The BRIM-E6 is now ready for operation. Before placing the network into service, test the installation thoroughly, making sure that you can address all stations and that the BRIM-E6 and all stations are indicating normal operation. Ensure that the networking software is configured properly to match the installed network.
CHAPTER 4 USING THE LANVIEW LEDS This chapter describes how to use the LANVIEW Diagnostic LEDs to monitor BRIM status and diagnose BRIM problems. BRIM-E6 STB XMT CLN RCV Figure 4-1. LANVIEW LEDS 4.1 • • 4.2 • • 4.3 • • 4.4 • • STB (Standby) On - The bridge port is in the non-forwarding state. Possible causes of this condition are: redundancy detected by Spanning Tree, data link layer down, physical layer down, or port disabled. Off - The bridge port is in the forwarding state.
APPENDIX A EPIM SPECIFICATIONS This appendix provides specifications for Cabletron’s Ethernet Port Interface Modules (EPIMs). A.1 EPIM-T (10BASE-T TWISTED PAIR PORT) Internal Transceiver: Cabletron Systems TPT 10BASE-T Twisted Pair Transceiver Type: 8 Pin RJ-45 Jack A slide switch on the EPIM-T determines the cross over status of the cable pairs. The switch residing on the X side indicates the pairs internally cross over. If the switch resides on the = side, the pairs do not internally cross over.
APPENDIX A: EPIM SPECIFICATIONS A.2 EPIM-F1 AND EPIM-F2 (MULTIMODE FIBER OPTIC PORTS) Internal Transceiver: Cabletron Systems FOT-F™ Fiber Optic Transceiver Connector Type: EPIM-F1: SMA fiber optic ports EPIM-F2: ST fiber optic ports Figure A-2. EPIM-F1 and EPIM-F2 Receive Sensitivity: -29.5 dBm Maximum Receive Power: -8.2 dBm Transmitter Power Into – 50/125 µm fiber: -13.0 dBm 62.5/125 µm fiber: -10.0 dBm 100/140 µm fiber: -7.
EPIM-F3 (SINGLE MODE FIBER OPTIC PORT) (e.g., -29.5 dBm peak = -32.5 dBm average). A.3 EPIM-F3 (SINGLE MODE FIBER OPTIC PORT) Internal Transceiver: Cabletron Systems FOT-F3™ Fiber Optic Transceiver Connector Type: ST fiber optic ports Figure A-3. EPIM-F3 Parameter Typical Minimum Maximum Transmitter Peak Wave Length: 1300 nm 1270 nm 1330 nm Spectral Width: 60 nm — 100 nm Rise Time: 3.0 ns 2.7 ns 5.0 ns Fall Time: 2.5 ns 2.2 ns 5.0 ns Duty Cycle: 50.1% 49.6% 50.
APPENDIX A: EPIM SPECIFICATIONS power output at 25C equals -16.4 dBm. For a 4C temperature increase, multiply the typical coefficient (-0.15 dBm) by four, and add the result to typical output power (4 x -0.15 dBm + -16.4 dBm = -17.0 dBm) Parameter Typical Transmit Power: -15.1 dBm Transmit Budget: 14.4 dBm Receive Sensitivity: -29.5 dBm Maximum Receive Power: -6.
EPIM-C (BNC PORT) Power Meter, you must subtract 3 dBm from the measurement to correctly compare those measured values to the values listed above (e.g., -29.5 dBm peak = -32.5 dBm average). A.4 EPIM-C (BNC PORT) Internal Transceiver: Cabletron Systems TMS-3™ Transceiver Connector Type: BNC receptacle, with gold center contact, for use with BNC type tee-connectors and RG-58 thin-net cable. Internal Termination Switch = On (internally terminated) = Off (need external termination) Figure A-4.
APPENDIX A: EPIM SPECIFICATIONS Warning: Connecting a thin-net segment to earth ground at more than one point could produce dangerous ground currents. A.5 EPIM-A AND EPIM-X (AUI PORTS) Connector Type: DB-15 (15 position D type receptacle) EPIM-A: Female Connector EPIM-X: Male Connector Figure A-5. EPIM-A and EPIM-X (AUI Port) Pin 1 Logic Ref. 2 9 Collision - Collision + 10 Transmit - 3 Transmit + 11 Logic Ref. 4 Logic Ref.
APPENDIX B EPIM CABLE REQUIREMENTS This appendix describes cable specifications and requirements for the EPIMs. Your network must meet the requirements and conditions specified in this chapter to obtain satisfactory performance from this equipment. Failure to follow these guidelines could result in poor network performance. B.
APPENDIX B: EPIM CABLE REQUIREMENTS Insertion Loss The maximum insertion loss allowed for a 10BASE-T link is 11.5 dB at all frequencies between 5.0 and 10 MHz. This includes the attenuation of the cables, connectors, patch panels, and reflection losses due to impedance mismatches in the link segment. Impedance Cabletron Systems 10BASE-T Twisted Pair products will work on twisted pair cable with 75 to 165 ohms impedance. Unshielded twisted pair cables typically have an impedance of between 85 to 110 ohms.
CABLE REQUIREMENTS Temperature Multi-pair PVC 24 AWG telephone cables typically have an attenuation of approximately 8 to 10 dB/100m at 20°C (78°F). The attenuation of PVC insulated cable varies significantly with temperature. At temperatures greater than 40°C (104°F), we strongly recommend that you use plenum-rated cables to ensure that cable attenuation remains within specification. B.1.
APPENDIX B: EPIM CABLE REQUIREMENTS Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device. Total propagation delay allowed for the entire network is 25.6 µsec, if the total propagation delay between any two nodes on the network exceeds 25.6 µsec, then bridges should be used. B.1.3 FOIRL/10BASE-FL Single Mode Fiber Optic Cable Requirements Table B-2 shows Single Mode Fiber Optic cable specifications for the EPIM-F3. Table B-2.
CABLE REQUIREMENTS Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device. Total propagation delay allowed for the entire network is 25.6 µsec, if the total propagation delay between any two nodes on the network exceeds 25.6 µsec, then bridges should be used. B.1.
APPENDIX B: EPIM CABLE REQUIREMENTS B.1.5 AUI Cable Requirements When you connect an external network segment to t an EPIM-A or EPIMX, the AUI cable must meet the following requirements: AUI Cable The AUI cable connecting the module to a device must be IEEE 802.3 type cable. Length The AUI Cable must not exceed 50 meters in length. If 28 AWG thin office drop AUI cable is used, then the maximum cable length is limited to 50 feet (15.24 meters).
INDEX C I Cabletron Systems Technical Support 2 Installation Installing a BRIM in a Hub 10 Installing a BRIM-E6 in a MIM 8 Installing an EPIM into the BRIM 11 E Environmental Requirements 3 EPIMs Available Modules 3 Cable Requirements AUI 36 Multimode Fiber 33 Single Mode Fiber 34 Thin-net 35 UTP and STP 31 Connecting to the Network EPIM-A 19 EPIM-C 17 EPIM-F1 15 EPIM-F2 15 EPIM-F3 15 EPIM-T 13 EPIM-X 20 Specifications EPIM-A 30 EPIM-C 29 EPIM-F1 26 EPIM-F2 26 EPIM-F3 27 EPIM-T 25 EPIM-X 30 Ethernet Bri
