Cabletron Systems SEH100TX-22 - Manuals

SEH100TX User’s Guide 1-1 CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems SEH100TX-22 100BASE-T Stackable Hub User’s Guide . This manual provides installation instructions, troubleshooting and reference information for the SEH100TX-22. 1.1 USING THIS MANUAL Read through this manual to gain a...

Chapter 1: Introduction 1-2 SEH100TX User’s Guide 1.2 DOCUMENT CONVENTIONS The following conventions are used throughout this document: NOTE Note symbol. Calls the reader’s attention to any item of information that may be of special importance. TIP Tip symbol. Conveys helpful hints concerning proced...

Getting Help SEH100TX User’s Guide 1-3 1.3 GETTING HELP If you need additional support related to this device, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: Before calling Cabletron Systems Technical Support, have the foll...

Chapter 1: Introduction 1-4 SEH100TX User’s Guide 1.4 RELATED MANUALS Use the Cabletron Systems SEHI100TX-22 100BASE-T Intelligent Stackable Hub User’s Guide to supplement the procedures and other technical data provided in this manual. The procedures contained in the SEHI100TX-22 100BASE-T Intellig...

SEH100TX User’s Guide 2-1 CHAPTER 2 SEH FEATURES AND OPTIONS This chapter provides an overview of the SEH (Figure 2-1) and contains sections detailing the features and available options. Figure 2-1 Front and Rear Views of the SEH100TX-22 NOTE The abbreviations SEH (Stackable Ethernet Hub) and SEHI (...

Chapter 2: SEH Features and Options 2-2 SEH100TX User’s Guide 2.1 SEH OVERVIEW The SEH100TX-22 is a repeating hub providing 22 RJ45 ports and two Ethernet Port Interface Module (EPIM) ports on the front panel for network connections. The SEH has two rear panel Interconnect Bus ports for stackable co...

Stackable Capabilities SEH100TX User’s Guide 2-3 LANVIEW LEDs Cabletron Systems LANVIEW status monitoring and diagnostics system is a troubleshooting tool that helps in diagnosing power failures, collisions, cable faults, and link problems. The LANVIEW LEDs are conveniently located on the SEH front ...

Chapter 2: SEH Features and Options 2-4 SEH100TX User’s Guide 2.5 OPTIONAL EPIMs EPIMs are not included with the SEH, but they can be purchased separately from Cabletron Systems. EPIMs enable the expansion of a network through different types of media. Cabletron Systems offers three optional EPIMs f...

SEH100TX User’s Guide 3-1 CHAPTER 3 INSTALLATION REQUIREMENTS AND SPECIFICATIONS This chapter describes cabling requirements, network guidelines, and operating specifications for the SEH100TX-22. 3.1 CABLE SPECIFICATIONS The front panel SEH100TX-22 network ports support Category 5 Unshielded Twisted...

Chapter 3: Installation Requirements and Specifications 3-2 SEH100TX User’s Guide 3.1.2 UTP Cable Specifications The device at the other end of the twisted pair segment must meet IEEE 802.3u 100BASE-T specifications. When connecting a 100BASE-TX twisted pair segment to the SEH twisted pair network p...

Cable Specifications SEH100TX User’s Guide 3-3 Propagation Delay 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 network is 256 bit times (2.56 µ s) in one direction (5.12 µ s round trip). If the...

Chapter 3: Installation Requirements and Specifications 3-4 SEH100TX User’s Guide 3.2 NETWORK CABLE LENGTHS This section details the maximum network cable lengths specified by the IEEE 802.3u standard for a Class I repeater. As stated previously, the physical size of the network is limited primarily...

Network Port Specifications SEH100TX User’s Guide 3-5 Table 3-1 summarizes the maximum segment lengths for the type and combination of cables used with a Class I repeater. 3.3 NETWORK PORT SPECIFICATIONS The SEH network ports use shielded RJ45 connectors that support UTP cabling. Figure 3-2 shows th...

Chapter 3: Installation Requirements and Specifications 3-6 SEH100TX User’s Guide 3.4 OPERATING SPECIFICATIONS This section details power supply and environmental requirements. 3.4.1 Power Supply Requirements The SEH has a universal power supply. The input power requirements are listed in Table 3-2....

Physical Specifications SEH100TX User’s Guide 3-7 3.5.3 Immunity This unit meets the requirements of EN 50082-1 includingIEC 801-2 (ESD), IEC 801-3 (Radiated Susceptibility),and IEC 801-4 (EFT/B). 3.6 PHYSICAL SPECIFICATIONS This section details the physical specifications for the SEH. Dimensions (H...

SEH100TX User’s Guide 4-1 CHAPTER 4 INSTALLATION This chapter outlines the procedure for attaching the SEH to the network as a stackable or standalone device. Ensure that the network meets the guidelines and requirements outlined in Chapter 3, Installation Requirements and Specifications, before ins...

Chapter 4: Installation 4-2 SEH100TX User’s Guide The SEH may be installed on a tabletop or shelf, or in a 19-inch rack, and configured as a standalone or stacked hub. Go to Section 4.2 to install an SEH on a table or shelf. Go to Section 4.3 to install the SEH in a rack. 4.2 TABLETOP OR SHELF INSTA...

Rackmount Installation SEH100TX User’s Guide 4-3 4.3 RACKMOUNT INSTALLATION To install the SEH in a 19-inch rack, Cabletron Systems provides an accessory kit with the SEH that includes rack mounting brackets, mounting screws, and a strain-relief bracket for cable management. Rack mounting the SEH in...

Chapter 4: Installation 4-4 SEH100TX User’s Guide Rack Mounting the SEH Refer to Figure 4-3 and proceed as follows to install the SEH into a19-inch rack. 1. Remove the four cover screws (two from each side) located along the front edges of each side of the SEH. 2. Using the four 6-32 x 3/8-inch repl...

Powering Up and Stacking the SEH SEH100TX User’s Guide 4-5 Figure 4-4 Installing the SEH in the Rack Proceed to Section 4.4, Powering Up and Stacking the SEH. 4.4 POWERING UP AND STACKING THE SEH The following section details the procedures that must be followed to power up and interconnect stacked ...

Chapter 4: Installation 4-6 SEH100TX User’s Guide 4.4.1 Stacking SEH Hubs with an SEHI Follow the procedures in this section if you are using an SEHI to manage an SEH stack: 1. Power up the SEHI by plugging the power cord into the back panel of the SEHI and plugging the other end into a grounded rec...

Powering Up and Stacking the SEH SEH100TX User’s Guide 4-7 5. Attach the interconnect cable to the “IN” port on the rear panel of the SEH as shown in Figure 4-5. Figure 4-5 Stacking the SEH and SEHI 6. Attach the other end of the interconnect cable to the “OUT” port on the rear panel of the hub at t...

Chapter 4: Installation 4-8 SEH100TX User’s Guide 4.4.2 Stacking Unmanaged SEH Hubs Together Use the following procedure to stack non-intelligent hubs (SEHs) together. 1. Power up each SEH in the stack by plugging the power cord into the back panel of the SEH and plugging the other end into a ground...

Installing an EPIM SEH100TX User’s Guide 4-9 To install an EPIM-100TX, EPIM-100FX, or EPIM-100FMB, proceed as follows: 1. Remove the coverplate or the existing EPIM (whichever applies). 2. Slide the new EPIM into place, making sure that the connectors on the rear of the EPIM align correctly and firm...

SEH100TX User’s Guide 5-1 CHAPTER 5 CONNECTING TO THE NETWORK This chapter outlines the procedure for connecting the SEH to a network. Ensure that the network meets the guidelines and requirements outlined in Chapter 3, Installation Requirements and Specifications, before installing the SEH100TX-22....

Chapter 5: Connecting to the Network 5-2 SEH100TX User’s Guide Figure 5-1 SEH Network Ports 3. Check that the applicable LNK LED for the port is on. If the LED is off, perform each of the following steps until it is on: a. Check that the 100BASE-TX device at the other end of the twisted pair segment...

Connecting the SEH100TX-22 to the Network SEH100TX User’s Guide 5-3 The EPIM-100TX is also used to provide another RJ45 port to connect to a UTP segment. Before connecting a segment to the EPIM-100TX, check each end of the segment to determine if the wires have been crossed over for the proper conne...

Chapter 5: Connecting to the Network 5-4 SEH100TX User’s Guide c. Check the cable for continuity. d. Check that the twisted pair connection meets the cable specifications outlined in Section 3.1.2. e. Check that the crossover switch is in the correct position. If a link is not established, contact C...

Testing the Installation SEH100TX User’s Guide 5-5 Figure 5-3 EPIM-100FX Port 4. Check that the EPIM-100FX or EPIM-100FMB LNK LED is on. If the LED is off, perform the following steps until it is on: a. Check that the device at the other end of the link is powered up. b. Verify that there is proper ...

SEH100TX User’s Guide 6-1 CHAPTER 6 TROUBLESHOOTING This chapter contains instructions for using LANVIEW LEDs to troubleshoot physical layer network problems. 6.1 INSTALLATION TEST After connecting the SEH to the network, verify that packets pass between all Ethernet devices connected to the SEH and...

Chapter 6: Troubleshooting 6-2 SEH100TX User’s Guide 2. If the remote station is ready and the LNK LED is on, but no data passes through the port, one of the following conditions may exist: a. Network management has disabled the port. Correct this condition by enabling the port through network manag...

Using LANVIEW SEH100TX User’s Guide 6-3 Figure 6-1 LANVIEW LEDs PWR When this green LED is on, it indicates that the SEH is receiving power. If this LED is off, it indicates a loss of input power. Check that the power cord is properly plugged into the SEH and into the ac input power source (circuit ...

EPIM Specifications SEH100TX User’s Guide A-1 APPENDIX A EPIM INFORMATION A.1 EPIM SPECIFICATIONS EPIMs enable the connection of the SEH to the network using different media types.The SEHI100TX-22 supports the EPIM-100TX, EPIM-100FX, and the EPIM-100FMB. This appendix provides the specifications for...

Appendix A: EPIM Information A-2 SEH100TX User’s Guide A.1.2 EPIM-100FX The EPIM-100FX shown in Figure A-2 supports Multimode Fiber Optic cabling. The EPIM-100FX is equipped with an SC style connector. Specifications for the EPIM-100FX are listed in Table A-1. Figure A-2 EPIM-100FX The transmitter p...

SEH100TX User’s Guide Index-1 INDEX Numerics 100BASE-TX cable length 3-2crosstalk 3-2impedance 3-2jitter 3-2noise 3-2temperature 3-3 A Agency approvals emission 3-6immunity 3-7safety 3-6 C Cable interconnecting SEHs 3-1lengths 3-4 Cable specifications multimode fiber optic 3-3overview of 3-1UTP 3-2 ...

Index Index-2 SEH100TX User’s Guide S Safety, agency approval 3-6SEH features 2-2SEH100TX-22 connection of 5-1 Size dimensions 3-7 Specifications environmental requirements 3-6power supply requirements 3-6SEH network ports 3-5 T Testing 5-5Troubleshooting 6-1 U UTP specification of 3-1 UTP segments ...

POWER SUPPLY CORD The mains cord used with this equipment must be a 2 conductor plus ground typewith minimum 0.75 mm square conductors and must incorporate a standard IECappliance coupler on one end and a mains plug on the other end which is suitablefor the use and application of the product and tha...