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SEH-22, SEH-24, SEH-32, AND SEH-34 10BASE-T STACKABLE HUB USER’S GUIDE CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005 The Complete Networking Solution™.
NOTICE 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 have been made.
NOTICE ii 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.
NOTICE iii 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.
NOTICE iv EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY 1. EXCLUSION OF WARRANTY. Except as may be specifically provided by Cabletron in writing, Cabletron makes no warranty, expressed or implied, concerning the Program (including Its documentation and media).
CONTENTS v T ABLE OF CONTENTS APPENDIX A TABLE OF CONTENTS v CHAPTER 1 INTRODUCTION 1.1 USING THIS MANUAL ............................................................ 1-1 1.2 GETTING HELP ...............................................................
CONTENTS vi CHAPTER 3 INSTALLATION 3.1 UNPACKING THE SEH ............................................................ 3-1 3.2 INSTALLING THE SEH............................................................ 3-1 3.2.1 Stacking the SEH ...................
INTRODUCTION Page 1-1 CHAPTER 1 INTRODUCTION W elcome to the Cabletron Systems SEH-22, SEH-24, SEH-32, and SEH-34 10BASE-T Stackable Hub User’s Guide . This manual explains installation instructions and provides reference information for the SEH-22, 24, 32, and 34.
INTRODUCTION Page 1-2 1.2 GETTING HELP If you need additional support related to the Cabletron Systems SEH, or if you have any questions , comments, or suggestions concerning this manual, contact Cabletron Systems T echnical Support: By phone ........
INTRODUCTION Page 1-3 Y ou can stack together up to five SEH hubs using Cabletron Systems’ external HubSTACK Interconnect cables . If you w ant to add management to the stack, Cabletron Systems offers the MicroMMAC and the SEHI intelligent hubs. Y ou can stack up to four SEHs with one intelligent hub.
INTRODUCTION Page 1-4 LANVIEW LEDs Cabletron Systems’ LANVIEW Status Monitoring and Diagnostics System is a troubleshooting tool that helps you diagnose power failures , collisions, cable faults, and link problems. The LANVIEW LEDs are conveniently located on the front panel.
INTRODUCTION Page 1-5 Daughter Board Upgrade Kit Y ou can upgrade the SEH-22 and the SEH-32 to 24 ports using the daughter board upgrade kit. The Cabletron part numbers for the upgrades are: • SEH-2.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-1 CHAPTER 2 INST ALLA TION REQUIREMENTS/SPECIFICA TIONS This chapter describes network guidelines , power requirements, and operating specifications for the SEH. Be sure to read this chapter before you install the SEH.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-2 2.1.2 UTP and STP Cable Specifications for the Network P orts and EPIM-T Module The device at the other end of the twisted pair segment must meet IEEE 802.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-3 Delay The maximum propagation delay of a 10B ASE-T link segment must not exceed 1000 nsec. This 1000 nsec.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-4 2.1.3 Multimode Fiber Optic Cable Specifications for the EPIM-F1 and EPIM-F2 Modules T able 2-1 shows Multimode Fiber Optic Cable specifications for the EPIM-F1 and EPIM-F2 modules.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-5 2.1.4 Single Mode Fiber Optic Cable Specifications for the EPIM-F3 Module T able 2-2 shows Single Mode Fiber Optic Cable specifications for the EPIM-F3. Attenuation Y ou must test the fiber optic cable with a fiber optic attenuation test set adjusted for an 1300 nm wa velength.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-6 2.1.5 Thin-net Network Requirements for the EPIM-C Module When you connect a thin-net segment to the SEH (via an EPIM-C), your network must meet the following requirements: Cable Type 50 ohm RG-58A/U type coaxial cable must be used when making up a thin-net cable segment.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-7 2.1.6 AUI Cable Requirements for the EPIM-A and EPIM-X Modules When you connect an external network segment to the SEH (via an EPIM-A or EPIM-X), the A UI cable must meet the following requirements: AUI Cable The A UI cable connecting the module to a device must be IEEE 802.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-8 2.2.1 SEH-22 and SEH-24 Network P ort Specifications The SEH-22 and SEH-24 provide RJ45 connections for network connections.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-9 Table 2-3. Champ Connector Pinouts 50 Pin Champ Connector Pin Signal Wire Color Pin Signal Wire Color 1 RX 1- Blue/White 26 RX 1+ White/Blue 2 TX 1- O.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-10 2.3 EPIM SPECIFICATIONS EPIMs let you connect the SEH to the main network using different media types . Cabletron Systems offers a variety of EPIMs. The following sections explain specifications for each EPIM.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-11 2.3.2 EPIM-F1/F2 The EPIM-F1 and EPIM-F2 shown in Figure 2-4 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.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-12 2.3.3 EPIM-F3 The EPIM-F3 shown in Figure 2-5 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 below .
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-13 Parameter Typical Minimum Maximum Transmitter Peak Wave Length 1300 nm 1270 nm 1330 nm Spectral Width 60 nm - 100 nm Rise Time/ 3.0 nsec 2.7 nsec 5.0 nsec Fall Time 2.5 nsec 2.2 nsec 5.0 nsec Duty Cycle 50.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-14 2.3.4 EPIM-C The EPIM-C supports thin-net coaxial cabling and is equipped with an internal Cabletron Systems TMS-3™ Transceiver . Y ou can use the TERM switch on the front of the EPIM-C to set the internal 50 Ohm terminator .
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-15 2.3.5 EPIM-A and EPIM-X (AUI P ort) The EPIM-A is a DB15 female connector used to attach segments to an external transceiver . The EPIM-X is equipped with dual internal transceivers . It has a DB15 male connector used to attach segments to an A UI cable.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-16 2.4 TRANSCEIVER REQUIREMENTS When you connect an external network segment, via a transceiver , to the SEH with an EPIM-A, the following requirements must be met: • The transceiver or Ethernet Device to which the module will be connected must meet IEEE 802.
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-17 JAM Output : Collisions are propagated through the network using the JAM signal of an alternating pattern of 1's and 0's in accordance with 802.3 specifications for a repeater unit. Fragment Extension : Packet fragments are extended to a minimum of 96 bits using the JAM [1,0].
INSTALLATION REQUIREMENTS/SPECIFICATIONS Page 2-18 ENVIRONMENTAL REQUIREMENTS Operating T emperature: +5 ° to +50 ° C Non-operating T emperature: -30 ° to +90 ° C Operating Humidity: 5 to 95% (non-condensing) SAFETY This unit meets the safety requirements of UL 1950, CSA C22.
INSTALLATION Page 3-1 CHAPTER 3 INST ALLA TION This chapter outlines the procedure for installing your SEH and connecting it to a network. Y ou can install the SEH as a stackable or stand-alone device.
INSTALLATION Page 3-2 Free-standing and shelf installations must be within in reach of the network cabling and meet the requirements listed below: • A single phase 120V ac, 15A, grounded power receptac le must be located within 7 feet of the location.
INSTALLATION Page 3-3 T o stack SEHs together , refer to Figure 3-1 and perform the following steps: 1. Attach the SEH HubSTACK Interconnect cable to the bus port labeled “OUT” on the rear panel of the SEH. 2. Attach the other end of SEH HubSTACK Interconnect cable to the bus port labeled “IN” on the rear panel of the SEH next in the stack.
INSTALLATION Page 3-4 If you disconnect one end of a HubSTACK Interconnect cable and leave the other end attached to the hub , ensure that you disconnect the cable from the “OUT” port as shown in Figure 3-2. This ensures that the HubSTACK Interconnect cable is terminated properly .
INSTALLATION Page 3-5 3.2.3 Rack Mounting the SEH Refer to Figure 3-4 and perform these steps to install the SEH in a 19-inch rack. 1. Remove four cover screws (two from each side) located along the front edges of each side of the SEH. 2. Using the four cover screws removed in step 1, attach the rack mounting brackets to each end of the SEH.
INSTALLATION Page 3-6 3.2.4 W all Mounting the SEH When you wall mount the SEH, the cable connections must face down. Refer to Figure 3-6 and perform the following steps to w all mount the SEH. Note : 1/4-inch Molly screw anchors for wall mounting are not included with the SEH-ACCY-KIT package.
INSTALLATION Page 3-7 3. You will need a pencil for this step. With the wall mounting brackets attached to the SEH, position the SEH against the wall where it will be permanently mounted with the network port facing down. Use the pencil to mark the wall location for the four pilot holes.
INSTALLATION Page 3-8 3.3 CONNECTING THE SEH TO THE POWER SOURCE Note : The SEH has a universal power supply. This allows you to connect the SEH to power sources from 90 Vac to 264 Vac, 47-63 Hz. T o connect the SEH to the power source: 1. Plug the power cord into the back panel of the SEH.
CONNECTING TO THE NETWORK Page 4-1 CHAPTER 4 CONNECTING TO THE NETWORK This chapter outlines the procedure for connecting your SEH to a network. Ensure that your network meets the guidelines and requirements outlined in Chapter 2, Installation Requirements/ Specifications , before installing the SEH.
CONNECTING TO THE NETWORK Page 4-2 T o connect twisted pair segments to the SEH: 1. Insert the RJ45 connector from each twisted pair segment into the desired network port on the SEH. See Figure 4-1. Figure 4-1. SEH-22/24 Network Ports 2. Check that the applicable LNK LED for the port is on.
CONNECTING TO THE NETWORK Page 4-3 4.1.2 Connecting Network P orts SEH-32 and SEH-34 The SEH-32 has a 50-pin Champ connector , while the SEH-34 has two 50-pin Champ connectors. This configuration of the SEH allows you to run a 50-pin feeder cable from the SEH to a punch down block.
CONNECTING TO THE NETWORK Page 4-4 4. Check that the link LED on the 10BASE-T Ethernet device and the applicable LNK LED on the SEH are on. If the LEDs are not on, perform each of the following steps until the LEDs are on: a. Check that the 10BASE-T device and the SEH ha ve power .
CONNECTING TO THE NETWORK Page 4-5 T o connect an EPIM-T to a Twisted P air Segment: 1. Insert the RJ45 connector on the twisted pair segment into the RJ45 port on the EPIM. See Figure 4-3. 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 TO THE NETWORK Page 4-6 • The physical communication link consists of two strands of fiber optic cabling: the Transmit (TX) and the Receive (RX). The Transmit strand from the applicable port on the module will be connected to the Receive port of a fiber optic Ethernet device at the other end of the segment.
CONNECTING TO THE NETWORK Page 4-7 Figure 4-4. The EPIM-F1, EPIM-F2 and EPIM-F3 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.
CONNECTING TO THE NETWORK Page 4-8 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.
CONNECTING TO THE NETWORK Page 4-9 Note : You must terminate each segment attached to the tee-connector. If you do not attach a segment to one of the female connections on the tee-connector, then a terminator must be placed on that connection. c. Attach another thin-coax segment or a terminator to the other female connector on the tee-connector.
CONNECTING TO THE NETWORK Page 4-10 4.1.6 Connecting an A UI Cable to an EPIM-A Caution : Ensure that the external transceiver to which the SEH will be connected does not have the signal quality error (SQE or “heartbeat”) test function enabled.
CONNECTING TO THE NETWORK Page 4-11 5. Check that the PWR LED on the EPIM-A is on. If the LED is not on, contact Cabletron Systems Technical Support. 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 .
CONNECTING TO THE NETWORK Page 4-12 Figure 4-7. The EPIM-X 4.2 FINISHING THE INSTALLATION The SEH 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 SEH and all stations are indicating normal operation.
TROUBLESHOOTING Page 5-1 CHAPTER 5 TROUBLESHOOTING This chapter contains instructions for using LANVIEW LEDs to troubleshoot physical layer network problems . 5.1 INSTALLATION CHECK-OUT After you connect the SEH to the network, verify that packets pass between all Ethernet devices connected to the SEH and any other devices connected to the network.
TROUBLESHOOTING Page 5-2 2. If the remote station is ready and the LNK LED is on, but no data passes through the port, one of two conditions may exist: • Network management has disabled the port. • The port is segmented either because the collision detector was on for more than 110 µ sec.
TROUBLESHOOTING Page 5-3 Figure 5-1. LANVIEW LEDs PWR (Green) When this LED is on it indicates that the SEH is receiving power . If this LED is off , it indicates a loss of input power . Check the input power source (circuit breaker , fuse , etc.). If the proper source power is present, the problem could be with the SEH.
TROUBLESHOOTING Page 5-4 CLN (Red) This LED indicates that a collision has occurred on one of the ports. RCV (Yellow Flashing) When this LED flashes, it indicates that the SEH is receiving data packets from the associated port segment.
TWISTED P AIR WIRING T ABLES P age A-1 APPENDIX A TWISTED P AIR WIRING T ABLES This appendix contains twisted pair wiring tables which will assist you if you are using a Punch Down block (see Figure A-1) to wire your twisted pair segments.
P age A-2 TWISTED P AIR WIRING T ABLES Note : Pins 25 and 50 on Champ connector are not used. Table A-1. Twisted Pair Wiring from an SEH-32/34 to a Punch Down Block From SEH-32/34 Into and Out of 50-P.
TWISTED P AIR WIRING T ABLES P age A-3 P ort 8/20 Pin Pin Pin RX+ 40 40 Black/Gray RX+ A29 Black/Gray RX+ RX- 15 15 Gray/Black RX- A30 Gray/Black RX- TX+ 41 41 Y ellow/Blue TX+ A31 Y ellow/Blue TX+ TX.
P age A-4 TWISTED P AIR WIRING T ABLES P ort 4/16 Pin Pin Pin RX+ 32 32 Red/Orange RX+ A13 Red/Orange RX+ RX- 7 7 Orange/Red RX- A14 Orange/Red RX- TX+ 33 33 Red/Green TX+ A15 Red/Green TX+ TX- 8 8 Gr.
TWISTED P AIR WIRING T ABLES P age A-5 Table A-2. Twisted Pair Wiring from a Punch Down Block to a 10Base-T Device From Punch Down Block T o RJ-45 W allplate Into Office Drop Into 10BASE-T Device P o.
P age A-6 TWISTED P AIR WIRING T ABLES P ort 8/20 Pin Pin Pin B29 Black/Gra y RX+ 1 TX+ 1 TX+ 1 TX+ B30 Gray/Blac k RX- 2 TX- 2 TX- 2 TX- B31 Y ellow/Blue TX+ 3 RX+ 3 RX+ 3 RX+ B32 Blue/Y ellow TX- 6R.
TWISTED P AIR WIRING T ABLES P age A-7 P ort 4/16 Pin Pin Pin B13 Red/Orange RX+ 1 TX+ 1 TX+ 1 TX+ B14 Orange/Red RX- 2 TX- 2 TX- 2 TX- B15 Red/Green TX+ 3 RX+ 3 RX+ 2 TX- B16 Green/Red TX- 6 RX- 6 RX.
P age A-8 TWISTED P AIR WIRING T ABLES Table A-3. Twisted Pair Wiring Summary SEH-32/34 Champ Punch Down Block W all Plate (If Required) 10BASE-T Ethernet Device Port 12 4 8 RX+ 2 3 RX- 4 9 TX+ 2 4 TX.
TWISTED P AIR WIRING T ABLES P age A-9 Figure A-1. Punch Down Block 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 .
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.
Ein wichtiger Punkt beim Kauf des Geräts Cabletron Systems SEH-32 (oder sogar vor seinem Kauf) ist das durchlesen seiner Bedienungsanleitung. Dies sollten wir wegen ein paar einfacher Gründe machen:
Wenn Sie Cabletron Systems SEH-32 noch nicht gekauft haben, ist jetzt ein guter Moment, um sich mit den grundliegenden Daten des Produkts bekannt zu machen. Schauen Sie zuerst die ersten Seiten der Anleitung durch, die Sie oben finden. Dort finden Sie die wichtigsten technischen Daten für Cabletron Systems SEH-32 - auf diese Weise prüfen Sie, ob das Gerät Ihren Wünschen entspricht. Wenn Sie tiefer in die Benutzeranleitung von Cabletron Systems SEH-32 reinschauen, lernen Sie alle zugänglichen Produktfunktionen kennen, sowie erhalten Informationen über die Nutzung. Die Informationen, die Sie über Cabletron Systems SEH-32 erhalten, werden Ihnen bestimmt bei der Kaufentscheidung helfen.
Wenn Sie aber schon Cabletron Systems SEH-32 besitzen, und noch keine Gelegenheit dazu hatten, die Bedienungsanleitung zu lesen, sollten Sie es aufgrund der oben beschriebenen Gründe machen. Sie erfahren dann, ob Sie die zugänglichen Funktionen richtig genutzt haben, aber auch, ob Sie keine Fehler begangen haben, die den Nutzungszeitraum von Cabletron Systems SEH-32 verkürzen könnten.
Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit Cabletron Systems SEH-32. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei Cabletron Systems SEH-32 gemeinsam mit Hinweisen bezüglich der Arten ihrer Lösung. Sogar wenn es Ihnen nicht gelingen sollte das Problem alleine zu bewältigen, die Anleitung zeigt Ihnen die weitere Vorgehensweise – den Kontakt zur Kundenberatung oder dem naheliegenden Service.
