-
Cabletron Systems NBR-420 - page 1
NBR-220 TWO PORT BRIDGE WITH LANVIEW ® RECEIVE TRANSMIT COLLISION STAND BY PORT B A PWR CPU COM RESET PORT B PORT A EPIM-A PWR EPIM-A PWR NBR-420 MULTI POR T BRIDGE ROUTER WITH LANVIEW ® RECEIVE TRANSMIT COLLISION STAND BY PORT B A PWR CPU COM 2 COM 1 DISPLAY RESET PORT B PORT A PORT F PORT E EPIM-A PWR EPIM-A PWR NBR-620 MULTI POR T BRIDGE ROUTE ...
-
Cabletron Systems NBR-420 - page 2
NBR-SERIES Installation Guide i 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 ha ve been made. The hardware, firmware, or software described in this m ...
-
Cabletron Systems NBR-420 - page 3
Notice ii NBR-SERIES Installation Guide DOC NOTICE This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites app ...
-
Cabletron Systems NBR-420 - page 4
Notice NBR-SERIES Installation Guide iii 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. Y ou may not copy , reproduce or transmit any part of the Program except as permitted by the Copyright Act of ...
-
Cabletron Systems NBR-420 - page 5
Notice iv NBR-SERIES Installation Guide DECLARATION OF CONFORMITY Application of Council Directiv e(s): 89/336/EEC 73/23/EEC Manufacturer’ s Name: Cabletron Systems, Inc. Manufacturer’ s Address: 35 Industrial Way PO Box 5005 Rochester, NH 03867 European Representativ e Name: Mr. J. Solari European Representativ e Address: Cabletron Systems Lim ...
-
Cabletron Systems NBR-420 - page 6
NBR-SERIES Installation Guide v CONTENTS CHAPTER 1 INTRODUCTION 1.1 Using This Manual ....................................................................... 1-2 1.2 NBR Features .............................................................................. 1-3 1.3 Conventions Used in This Document .......................................... 1-6 1.4 ...
-
Cabletron Systems NBR-420 - page 7
Contents vi NBR-SERIES Installation Guide CHAPTER 4 T ROUBLESHOOTING 4.1 Using LANVIEW ........................................................................... 4-1 4.2 Troubleshooting Checklist ............................................................ 4-4 4.3 Using the LCD ...................................................................... ...
-
Cabletron Systems NBR-420 - page 8
Contents NBR-SERIES Installation Guide vii APPENDIX D ADDITIONAL INF ORMATION D.1 NBR Overview .............................................................................D-1 D.2 Ethernet Channels A, B, C, and D ...............................................D-2 D.3 Channels E and F ................................................................. ...
-
Cabletron Systems NBR-420 - page 9
NBR-SERIES Installation Guide P age 1-1 CHAPTER 1 INTR ODUCTION The Cabletron Systems NBR-SERIES of Network Bridge Routers (NBR-220, NBR-420, NBR-620) provide bridging and routing solutions for Ethernet, token ring, FDDI, A TM, or wide area networks. The NBR-SERIES of standalone hubs consist of the follo wing three models: • NBR-220 – two Ether ...
-
Cabletron Systems NBR-420 - page 10
Chapter 1: Introduction P age 1-2 NBR-SERIES Installation Guide This manual explains the follo wing: • Installing the NBR • Connecting the NBR to an existing netw ork • T esting the NBR • T roubleshooting any installation/operational problems In addition, Appendices contain NBR and Ethernet Port Interface Module (EPIM) en vironmental and op ...
-
Cabletron Systems NBR-420 - page 11
NBR Features NBR-SERIES Installation Guide P age 1-3 Appendix A, NBR Specifications , provides the physical properties, en vironmental operating requirements, agency approv als, and power requirements. Appendix B, EPIM Specifications , details the specifications for the EPIMs that may be used with the NBR. Appendix C, Network Planning and Configur ...
-
Cabletron Systems NBR-420 - page 12
Chapter 1: Introduction P age 1-4 NBR-SERIES Installation Guide Bridging/Routing The NBR-420 and NBR-620 can support two optional Bridge/Router Interface Modules (BRIMs). These modules allo w for additional Ethernet connections, W ide Area (Full or Fractional T1; 56k DDS) access, or links to existing high-speed netw ork backbones such as Asynchrono ...
-
Cabletron Systems NBR-420 - page 13
NBR Features NBR-SERIES Installation Guide P age 1-5 MIB Navigation NBR firmware supports a management tool which allo ws for MIB navigation from a remote station. Refer to the NBR-220, NBR-420, and NBR-620 Local Management Guide for more information regarding MIB navigation. Spanning T ree Protocol Support The NBR supports the follo wing spanning ...
-
Cabletron Systems NBR-420 - page 14
Chapter 1: Introduction P age 1-6 NBR-SERIES Installation Guide 1.3 CON VENTIONS USED IN THIS DOCUMENT The follo wing con ventions are used throughout this document: 1.4 RELATED MANUALS Use the follo wing manuals to supplement the procedures and other technical data provided in this manual. This manual references procedures in these manuals, where ...
-
Cabletron Systems NBR-420 - page 15
Getting Help NBR-SERIES Installation Guide P age 1-7 1.5 GETTING HELP If you need additional support related to this de vice, or if you hav e any questions, comments, or suggestions concerning this manual, contact Cabletron Systems T echnical Support: By phone (603) 332-9400 Monday – Friday; 8 A . M . – 8 P . M . Eastern T ime By CompuServe GO ...
-
Cabletron Systems NBR-420 - page 16
NBR-SERIES Installation Guide P age 2-1 CHAPTER 2 CONTR OLS AND INDICATORS This chapter provides descriptions of the controls and indicators of the Network Bridge Routers (NBR-220, NBR-420, NBR-620) . The models are as follo ws: • NBR-220 – two Ethernet Port Interface Module (EPIM) ports • NBR-420 – two EPIM ports, and two Bridge/Router Int ...
-
Cabletron Systems NBR-420 - page 17
Chapter 2: Controls and Indicators P age 2-2 NBR-SERIES Installation Guide 2.1 LANVIEW LEDs The NBR-220, NBR-420, and NBR-620 incorporate the Cabletron Systems LANVIEW status monitoring and diagnostics system. LANVIEW LEDs help diagnose problems, such as a po wer failure or a cable fault. Each NBR includes the follo wing LANVIEW LEDs: • A CPU LED ...
-
Cabletron Systems NBR-420 - page 18
NBR-SERIES Installation Guide P age 3-1 CHAPTER 3 INSTALLATION This chapter contains the follo wing procedures: • Unpacking the NBR • Preparing the NBR for installation • Installing the NBR • Connecting the NBR to the po wer source • Connecting the NBR to the network 3.1 UNPACKING THE NBR Unpack the NBR as follo ws: 1. Remove the packing ...
-
Cabletron Systems NBR-420 - page 19
Chapter 3: Installation P age 3-2 NBR-SERIES Installation Guide 3.2 PREPARING THE NBR FOR INSTALLATION This section contains the follo wing procedures: • Removing chassis co ver • Setting mode switches • Setting NVRAM reset switch • Installing SIMM upgrades • Installing FLASH SIMMs • Installing LDRAM and SDRAM SIMMs • Adding/replacing ...
-
Cabletron Systems NBR-420 - page 20
Preparing the NBR for Installation NBR-SERIES Installation Guide P age 3-3 T o remov e the chassis cov er, perform the following steps (see Figure 3-1): 1. Disconnect the NBR from the network as follows: a. Disconnect the po wer cord from the rear of the NBR. b. Disconnect all network cables attached to the NBR. Note the ports to which these cables ...
-
Cabletron Systems NBR-420 - page 21
Chapter 3: Installation P age 3-4 NBR-SERIES Installation Guide Figure 3-2 Switch, BRIM, and SIMM Locations NBR FRONT P ANEL LDRAM SDRAM BRIM (PORT F) BRIM (PORT E) NVRAM RESET SWITCH 1 2 3 4 5 6 7 8 MODE SWITCH BANK OFF ON Cabletron Use Only Cabletron Use Only Cabletron Use Only Cabletron Use Only Baud Rate Default Switch (Off=9600, On=2400) Cable ...
-
Cabletron Systems NBR-420 - page 22
Preparing the NBR for Installation NBR-SERIES Installation Guide P age 3-5 3.2.2 Setting Mode Switches Figure 3-2 sho ws the location and factory default settings of the mode switches. Check these switches to ensure that they are in the correct position for normal NBR operation. Switch definitions are as follo ws: • Switch 1 - Cabletron Systems ...
-
Cabletron Systems NBR-420 - page 23
Chapter 3: Installation P age 3-6 NBR-SERIES Installation Guide After changing the state of this switch, and repowering the device, the NBR requests a new image until it either receives a new image, or you reset the NBR again by using the RESET button on the front panel. After resetting the NBR, the device attempts to locate a BOOTP server again. H ...
-
Cabletron Systems NBR-420 - page 24
Preparing the NBR for Installation NBR-SERIES Installation Guide P age 3-7 3.2.4 Installing SIMM Upgrades The NBR allo ws memory upgrades for FLASH Electrically Erasable Programmable Read only Memory (FLASH EEPR OM), Shared Dynamic Random Access Memory (SDRAM), and Local Dynamic Random Access Memory (LDRAM). This section e xplains how to locate and ...
-
Cabletron Systems NBR-420 - page 25
Chapter 3: Installation P age 3-8 NBR-SERIES Installation Guide Figure 3-3 Installing a FLASH SIMM Install a FLASH SIMM as follo ws: 1. Insert the SIMM between the connector teeth in the SIMM slot. 2. Pivot the SIMM back until it locks into the clips in the SIMM slot, and the SIMM holes fit over the SIMM slot posts. The components and boards associ ...
-
Cabletron Systems NBR-420 - page 26
Preparing the NBR for Installation NBR-SERIES Installation Guide P age 3-9 3.2.4.2 Installing LDRAM and SDRAM SIMMs T o install an LDRAM or SDRAM SIMM, see Figure 3-4 and the steps belo w . Figure 3-4 Installing an LDRAM or SDRAM SIMM Install an LDRAM or SDRAM SIMM as follo ws: 1. Insert the SIMM between the connector teeth in the SIMM slot. 2. Piv ...
-
Cabletron Systems NBR-420 - page 27
Chapter 3: Installation P age 3-10 NBR-SERIES Installation Guide Install an EPIM as follo ws: 1. Remove the coverplate or the EPIM (whichever applies). 2. Slide your new EPIM into place, making sure the connectors on the rear of the module and inside the HUB attach properly. 3. Fasten the EPIM to the NBR using the mounting screws. Figure 3-5 Instal ...
-
Cabletron Systems NBR-420 - page 28
Preparing the NBR for Installation NBR-SERIES Installation Guide P age 3-11 3.2.7 T esting the NBR Before installing the NBR in a li ve netw ork, test the hub in a controlled situation to ensure that it is bridging packets. Perform this test with two workstations (see Figure 3-6), as follo ws: 1. Connect the first workstation to an NBR EPIM or BRIM ...
-
Cabletron Systems NBR-420 - page 29
Chapter 3: Installation P age 3-12 NBR-SERIES Installation Guide Figure 3-6 Installation Check-out 3.3 INSTALLING THE NBR Y ou can install the NBR on any horizontal surf ace. In addition, Cabletron Systems provides an accessory kit with the NBR that includes hardw are to install the NBR in a 19-inch rack. Select one of the follo wing subsections an ...
-
Cabletron Systems NBR-420 - page 30
Installing the NBR NBR-SERIES Installation Guide P age 3-13 • If a shelving unit is to be used, it must be able to support 30 pounds (13.6 kg) of static weight. • The temperature for the selected location must be maintained between 5 ° and 40 ° C, and less than 10 ° C per hour temperature change. 3.3.1 Attaching the Strain-Relief Brac ket At ...
-
Cabletron Systems NBR-420 - page 31
Chapter 3: Installation P age 3-14 NBR-SERIES Installation Guide 3.3.2 Rack Mounting the NBR Install the NBR in a 19-inch rack as follo ws: 1. Remove four cover screws (two from each side) located along the front edges of each side of the NBR. See Figure 3-8. 2. Using the four 6-32 x 3/8-inch replacement flathead screws, attach the rack mounting br ...
-
Cabletron Systems NBR-420 - page 32
Connecting the NBR to the P ower Source NBR-SERIES Installation Guide P age 3-15 3.3.3 Free-Standing Installation For a free-standing shelf or tabletop installation, locate the NBR within 7 feet of its po wer source and with an unrestricted free surface area 21 inches wide, 18 inches deep and 6 inches high, as sho wn in Figure 3-10. Figure 3-10 Fre ...
-
Cabletron Systems NBR-420 - page 33
Chapter 3: Installation P age 3-16 NBR-SERIES Installation Guide 2. Observe the status of the LANVIEW LEDs on the NBR. When the CPU LED is flashing, the STAND BY LEDs indicate the boot state of the NBR. During this period (up to 5 minutes), the LEDs cycle through a series of internal diagnostics. Figure 3-11 shows the LEDs. Figure 3-11 NBR LANVIEW ...
-
Cabletron Systems NBR-420 - page 34
Connecting the NBR to the Network NBR-SERIES Installation Guide P age 3-17 3.5 CONNECTING THE NBR TO THE NETWORK This section gi ves procedures for connecting the NBR to the netw ork using the v arious EPIMs av ailable. Once you hav e successfully powered up your NBR, you can add network connections. The procedure for connecting Ethernet se gments ...
-
Cabletron Systems NBR-420 - page 35
Chapter 3: Installation P age 3-18 NBR-SERIES Installation Guide Connect an EPIM-T to a T wisted Pair Segment as follo ws: 1. Connect the twisted pair segment to the module by inserting the RJ45 connector on the twisted pair segment into the RJ45 port on the module. See Figure 3-12. 2. Check that the LNK LED for the port is on. If the LED is not on ...
-
Cabletron Systems NBR-420 - page 36
Connecting the NBR to the Network NBR-SERIES Installation Guide P age 3-19 3.5.2 Connecting an A UI Cable to an EPIM-X Connect an EPIM-X to a de vice not requiring SQE as follo ws: 1. Check that the SQE LED on the EPIM-X is OFF. If the SQE LED is ON, check the position of the SQE switch. 2. Attach one end of an AUI cable, no longer than 50 meters i ...
-
Cabletron Systems NBR-420 - page 37
Chapter 3: Installation P age 3-20 NBR-SERIES Installation Guide 3.5.3 Connecting a Fiber Optic Cable to an EPIM-F1/F2 or EPIM-F3 When connecting a fiber optic link segment to an EPIM-F1/F2 or EPIM-F3 keep the follo wing in mind: • When connecting a fiber optic link segment with SMA 906 connectors to an EPIM-F1 with SMA ports, make sure each co ...
-
Cabletron Systems NBR-420 - page 38
Connecting the NBR to the Network NBR-SERIES Installation Guide P age 3-21 Connect a fiber optic link segment to an EPIM-F1/F2 or an EPIM-F3 as follo ws: 1. Remove the protective plastic covers from the fiber optic ports on the applicable port on the module, and from the ends of the connectors on each fiber strand. 2. Attach the fiber labeled 1 to ...
-
Cabletron Systems NBR-420 - page 39
Chapter 3: Installation P age 3-22 NBR-SERIES Installation Guide 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 LNK LED on the app ...
-
Cabletron Systems NBR-420 - page 40
Connecting the NBR to the Network NBR-SERIES Installation Guide P age 3-23 b. Attach the thin-net segment to one (1) of the female connectors on the tee-connector. c. Attach another thin-coax segment or a terminator to the other female connector on the tee-connector. Figure 3-16 The EPIM-C 3.5.5 Connecting an A UI Cable to an EPIM-A F ailure to ter ...
-
Cabletron Systems NBR-420 - page 41
Chapter 3: Installation P age 3-24 NBR-SERIES Installation Guide Connect an EPIM-A to an external netw ork segment as follo ws: 1. Check that the PWR LED on the EPIM-A is on. If the PWR LED is off, contact Cabletron Systems Technical Support. 2. Attach an external transceiver to the network segment intended for AUI port connection. For additional i ...
-
Cabletron Systems NBR-420 - page 42
NBR-SERIES Installation Guide P age 4-1 CHAPTER 4 T ROUB LESHOOTING This chapter provides information for troubleshooting netw ork and NBR operational problems. The follo wing sections describe the LANVIEW LEDs, provide a troubleshooting checklist, and e xplain how to use the LCD and the RESET button. 4.1 USING LANVIEW The NBR uses the Cabletron Sy ...
-
Cabletron Systems NBR-420 - page 43
Chapter 4: T roubleshooting P age 4-2 NBR-SERIES Installation Guide T able 4-1 LANVIEW LEDs LED Color Description Error Condition/ Recommended Action PWR Green Indicates that the NBR is receiving power . If OFF , chec k the input power source (circuit breaker , fuse, etc.). CPU Multi- Color Green Y ellow Red Flashing Green, indicates that the NBR i ...
-
Cabletron Systems NBR-420 - page 44
Using LANVIEW NBR-SERIES Installation Guide P age 4-3 COLLISION A, B, C , D Red Collision detected on a segment. When the LAN is operating properly , occasional flashing is normal. Excessive flashing, or a solid light, indicates an inordinate number of collisions. This ma y be normal if there is a high amount of traffic. Ensure that the SQE test ...
-
Cabletron Systems NBR-420 - page 45
Chapter 4: T roubleshooting P age 4-4 NBR-SERIES Installation Guide 4.2 T ROUBLESHOOTING CHEC KLIST If your NBR is not operating properly , the following checklist describes some of the problems that may occur , possible causes for the problem, and suggestions for resolving the problem. T able 4-2 T roub leshooting Checklist Prob lem P ossible Caus ...
-
Cabletron Systems NBR-420 - page 46
T roubleshooting Chec klist NBR-SERIES Installation Guide P age 4-5 User parameters (IP address, De vice and Module name, etc.) are lost when de vice is powered do wn. NVRAM reset s witch has been toggled and user-entered parameters ha ve been reset to f actor y def ault. NVRAM ma y be def ective . See Chapter 3 f or proper use of the NVRAM s witch ...
-
Cabletron Systems NBR-420 - page 47
Chapter 4: T roubleshooting P age 4-6 NBR-SERIES Installation Guide 4.3 USING THE LCD The NBR-420 and NBR-620 are equipped with a front panel LCD as sho wn in Figure 4-2. The LCD pro vides network statistics and diagnostic information such as Po wer up diagnostics, Re vision le vels, MA C and IP Addresses, and Error Alerts. Figure 4-2 The LCD Fi ve ...
-
Cabletron Systems NBR-420 - page 48
Using the LCD NBR-SERIES Installation Guide P age 4-7 4.3.1 Unsaved Initialization Messa ges Unsav ed Initialization messages are generated during power -up and appear as the e vent occurs. These messages track the boot up sequence. They are not sa ved and cannot be recalled. 4.3.2 Static System Messages Static System messages provide NBR configur ...
-
Cabletron Systems NBR-420 - page 49
Chapter 4: T roubleshooting P age 4-8 NBR-SERIES Installation Guide T o Exit There are three ways to e xit the Static System messages: • From the last Static System message Momentarily press the DISPLAY button while the last message “COM 2 Port Function xxxxx” is displayed. The display automatically returns to the product name. • Automatic ...
-
Cabletron Systems NBR-420 - page 50
Using the LCD NBR-SERIES Installation Guide P age 4-9 4.3.3 Alarm Messages Alarm messages pertain to e vents that occur within the NBR. The messages that can be displayed are sho wn in this section. T o Display the Messages There are two ways to gain access and display the Alarm messages: • From the product name display Press and hold the DISPLAY ...
-
Cabletron Systems NBR-420 - page 51
Chapter 4: T roubleshooting P age 4-10 NBR-SERIES Installation Guide 4.3.4 Saved System Messa ges Sav ed System messages are de vice related startup or boot strap messages, BOO TP/TFTP host, or startup error messages. The follo wing messages can be displayed: T o Display Messages There are two ways to access and display the Sa ved System messages: ...
-
Cabletron Systems NBR-420 - page 52
Using the LCD NBR-SERIES Installation Guide P age 4-11 • From the product name display Press and hold the DISPLAY button for 3 seconds while the product name is displayed. When the button is released, the display steps to the Alarm messages. Then press and hold the DISPLAY button for another 3 seconds. When the button is released, the display ste ...
-
Cabletron Systems NBR-420 - page 53
Chapter 4: T roubleshooting P age 4-12 NBR-SERIES Installation Guide 4.3.5 Failure or Err or Messages Failure or Error Messages appear when an unreco verable condition occurs. These messages are not sa ved and cannot be recalled by using the DISLA Y button. When one of these messages appear call Cabletron Systems T echnical Support. The Failure or ...
-
Cabletron Systems NBR-420 - page 54
NBR-SERIES Installation Guide P age A-1 APPENDIX A NBR SPECIFICATIONS This appendix provides the operating specifications for the Cabletron Systems NBR. Cabletron Systems reserves the right to change these specifications at any time without notice. A.1 OPERATING SPECIFICATIONS FLASH Memory: 2 MB Shared Memory: 4 MB (expandable to 12 MB) Internal ...
-
Cabletron Systems NBR-420 - page 55
Appendix A: NBR Specifications P age A-2 NBR-SERIES Installation Guide A.2 COM P OR T PINOUTS COM 1 PORT PINOUTS COM 2 PORT PINOUTS COM PORT (NBR-220 Onl y) PINOUTS T ype: Standard RJ45 port Pin 1 T ransmit Data (XMT) From COM 1 Port 2 Data Carrier Detect (DCD) From COM 1 Port 3 Data Set Ready (DSR) T o COM 1 Port 4 Recei ve Data (RCV) T o COM 1 P ...
-
Cabletron Systems NBR-420 - page 56
Physical Pr oper ties NBR-SERIES Installation Guide P age A-3 A.3 PHYSICAL PR OPER TIES Dimensions: 7.2H x 43.6W x 34.6D (cm) 2.8H x 17W x 13.5D (in) W eight (unit): 3.18 kg (7 lbs) A.4 EN VIRONMENTAL REQUIREMENTS Operating T emperature: 5 ° to 40 ° C (41 ° to 104 ° F) Non-operating T emperature: -30 ° to 90 ° C (-22 ° to 194 ° F) Operating ...
-
Cabletron Systems NBR-420 - page 57
NBR-SERIES Installation Guide P age B-1 APPENDIX B EPIM SPECIFICATIONS B.1 EPIM SPECIFICATIONS EPIMs enable the connection of the NBR to dif ferent media types. Cabletron Systems of fers a v ariety of EPIMs. The follo wing sections explain specifications for each EPIM. B.2 EPIM-T The EPIM-T is an RJ45 connector supporting UTP cabling. It has an in ...
-
Cabletron Systems NBR-420 - page 58
Appendix B: EPIM Specifications P age B-2 NBR-SERIES Installation Guide B.3 EPIM-F1/F2 The EPIM-F1 and EPIM-F2 sho wn in Figure B-2 support Multimode Fiber Optic cabling. Each EPIM has an internal Cabletron Systems FOT-F Fiber Optic Transceiver . The EPIM-F1 is equipped with SMA Connectors and the EPIM-F2 is equipped with ST Connectors. Specifica ...
-
Cabletron Systems NBR-420 - page 59
EPIM-F3 NBR-SERIES Installation Guide P age B-3 B.4 EPIM-F3 The EPIM-F3 sho wn in Figure B-3 supports Single Mode Fiber Optic cabling. It has an internal Cabletron Systems FOT-F Fiber Optic Transceiver and is equipped with ST Connectors. Specif ications for the EPIM-F3 are listed belo w . Figure B-3 EPIM-F3 T ransmitter Power decreases as temperatu ...
-
Cabletron Systems NBR-420 - page 60
Appendix B: EPIM Specifications P age B-4 NBR-SERIES Installation Guide The transmitter po wer le vels gi ven abov e are Peak Power Le vels after optical ov ershoot. Use a Peak Power Meter to compare the v alues given abov e to those measured on any particular port. T o measure power le vels with an A verage Po wer Meter, add 3 dBm to the a verage ...
-
Cabletron Systems NBR-420 - page 61
EPIM-C NBR-SERIES Installation Guide P age B-5 B.5 EPIM-C The EPIM-C supports thin coaxial cabling and is equipped with an internal Cabletron Systems TMS-3 Transceiver . Use the TERM switch on the front of the EPIM-C to set the internal 50 Ohm terminator . This eliminates the need to connect the port to a T -connector and terminator . Figure B-1 sh ...
-
Cabletron Systems NBR-420 - page 62
Appendix B: EPIM Specifications P age B-6 NBR-SERIES Installation Guide B.6 EPIM-A AND EPIM-X The EPIM-A is a DB15 female connector used to attach segments to an external transcei ver . The EPIM-X is equipped with dual internal transcei vers. It has a DB15 male connector used to attach se gments to an A UI cable. Figure B-5 sho ws both modules. Fi ...
-
Cabletron Systems NBR-420 - page 63
NBR-SERIES Installation Guide P age C-1 APPENDIX C NETW ORK PLANNING AND CONFIGURATION This appendix contains general networking guidelines. Before attempting to install the NBR or any additional EPIMs or BRIMs, re view the requirements and specifications outlined in this appendix. C.1 NETWORK CAB LE REQUIREMENTS T ake care in planning and prepari ...
-
Cabletron Systems NBR-420 - page 64
Appendix C: Network Planning and Configuration P age C-2 NBR-SERIES Installation Guide • Insertion Loss - Between frequencies of 5.0 and 10.0 MHz, the maximum insertion loss must not exceed 11.5 dB. This includes the attenuation of the cables, connectors, patch panels, and reflection losses due to impedance mismatches in the link segment. • I ...
-
Cabletron Systems NBR-420 - page 65
Network Cab le Requirements NBR-SERIES Installation Guide P age C-3 • Temperature - Multi-pair PVC 24 A WG telephone cables typically hav e an attenuation of approximately 8-10 dB/100 m at 20 ° C (68 ° F). The attenuation of PVC insulated cable v aries significantly with temperature. At temperatures greater than 40 ° C (104 ° F), we strongly ...
-
Cabletron Systems NBR-420 - page 66
Appendix C: Network Planning and Configuration P age C-4 NBR-SERIES Installation Guide - Network propagation delay is the amount of time it takes a packet to trav el from the sending device to the recei ving device. T otal propagation delay allo wed for the entire network must not exceed 25.6 µ s in one direction (51.2 µ s round trip). If the to ...
-
Cabletron Systems NBR-420 - page 67
Network Cab le Requirements NBR-SERIES Installation Guide P age C-5 - Network propagation delay is the amount of time it takes a packet to trav el from the sending device to the recei ving device. T otal propagation delay for the entire network must not e xceed 25.6 µ s in one direction (51.2 µ s round trip). If the total propagation delay exceed ...
-
Cabletron Systems NBR-420 - page 68
Appendix C: Network Planning and Configuration P age C-6 NBR-SERIES Installation Guide C.2 T RANSCEIVER REQUIREMENTS When you connect an external netw ork segment to an EPIM-A in your hub through a transcei ver , that transcei ver must meet IEEE 802.3 standards or Ethernet version 1.0 or 2.0 requirements. The transceiver must also hav e SQE disabl ...
-
Cabletron Systems NBR-420 - page 69
NBR-SERIES Installation Guide P age D-1 APPENDIX D ADDITIONAL INF ORMATION D .1 NBR OVERVIEW The NBR provides bridging and management for up to four separate Ethernet channels (A, B, C, and D). The follo wing list contains the currently av ailable EPIMs: • EPIM-T – 10B ASE-T T wisted Pair Se gment Interface Module • EPIM-F1/EPIM-F2 – Multim ...
-
Cabletron Systems NBR-420 - page 70
Appendix D: Additional Information P age D-2 NBR-SERIES Installation Guide Since the NBR is SNMP compliant, you can control and monitor the de vice remotely and locally using dif ferent SNMP Network Management packages. NBR firmware also supports DLM and all RMON groups, including: • Alarms • Hosts T op N • Events • Matrix • History • ...
-
Cabletron Systems NBR-420 - page 71
Bridging Functionality NBR-SERIES Installation Guide P age D-3 D .4 BRIDGING FUNCTIONALITY The NBR automatically configures itself as a bridge between channels A, B, C, D, E, and F for a six port bridge maximum. The IEEE 802.1d compliant bridge function supports multi-port bridging, the IETF Bridge MIB, Special Filtering Database, and Spanning T r ...
-
Cabletron Systems NBR-420 - page 72
NBR-SERIES Installation Guide Index-1 INDEX C Certification A-3 COM port pinouts A-2 E Environmental requirements A-3 H Help 1-7 L LANVIEW LEDs 1-3, 2-2 LCD 1-3, 2-2, 4-6 N NBR connecting to the network 3-17 features 1-3 installation 3-1 overview D-1 Network cable requirements C-1 connection 3-17 operating specifications A-1 transceiver requirement ...
-
Cabletron Systems NBR-420 - page 73
POWER SUPPLY CORD The mains cord used with this equipment must be a 2 conductor plus ground type with minimum 0.75 mm square conductors and must incorporate a standard IEC appliance coupler on one end and a mains plug on the other end which is suitable for the use and application of the product and that is approv ed for use in the country of applic ...
Do you have a question concerning Cabletron Systems NBR-420?
Use the form below
If you did not solve your problem by using a manual Cabletron Systems NBR-420, ask a question using the form below. If a user had a similar problem with Cabletron Systems NBR-420 it is likely that he will want to share the way to solve it.