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Cabletron Systems SEHI-22FL manual Network Port Specifications

Models: SEHI-22FL

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3.2NETWORK PORT SPECIFICATIONS

Chapter 3: Installation Requirements and Speciﬁcations

Crosstalk

Crosstalk is caused by signal coupling between the different cable pairs contained within a multi-pair cable bundle. 10BASE-T transceivers are designed so that the user does not need to be concerned about cable crosstalk, provided the cable meets all other requirements.

Noise

Noise is caused by either crosstalk or externally induced impulses. Impulse noise may cause data errors if the impulses occur at very speciﬁc times during data transmission. Generally, the user need not be concerned about noise. If noise-related data errors are suspected, it may be necessary to either reroute the cable or eliminate the source of the impulse noise.

Temperature

Multi-pair PVC 24 AWG cables typically have an attenuation of

8 dB to 10 dB/100 meters at 20°C (68°F). The attenuation of PVC insulated cable varies signiﬁcantly with temperature. At temperatures greater than 40°C (104°F), Cabletron Systems recommends the use of plenum-rated cables to ensure that cable attenuation remains within speciﬁcation.

3.2NETWORK PORT SPECIFICATIONS

The SEHI-22FL provides ST-type ports for 10BASE-FL Multimode Fiber Optic cabling. Figure 3-1 shows the network ports.

RX TX RX TX RX TX RX TX RX TX RX TX

12	11	10	9	8	7
RX TX	RX TX	RX TX	RX TX	RX TX	RX TX
6	5	4	3	2	1

09162_04

Figure 3-1 SEHI-22FL Network Ports

3-4	SEHI User’s Guide

Image 19

Cabletron Systems SEHI-22FL manual Network Port Specifications

Contents

SEHI-22FL INTELLIGENT STACKABLE HUB USER’S GUIDE SEHI User’s Guide SEHI User’s Guide FCC NOTICEDOC NOTICE VCCI NOTICESEHI User’s Guide EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITYCABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT CABLETRON SOFTWARE PROGRAM LICENSESEHI User’s Guide UNITED STATES GOVERNMENT RESTRICTED RIGHTSSPECIFICATIONS CONTENTSCHAPTER 2 SEHI FEATURES AND OPTIONS CHAPTER 3 INSTALLATION REQUIREMENTS ANDTROUBLESHOOTING ContentsINSTALLATION CHAPTER 5 CONNECTING TO THE NETWORKEPIM INFORMATION ContentsAPPENDIX B IMAGE FILE DOWNLOAD USING OIDs APPENDIX ACHAPTER INTRODUCTION 1.1 USING THIS MANUAL1.2 DOCUMENT CONVENTIONS your email address 1.3 GETTING HELP1.4 RELATED MANUALS anonymousON/OFF Switch CHAPTER SEHI FEATURES AND OPTIONSRESET Button Power SupplyFLASH EEPROMs 2.2 SEHI FEATURES2.1 SEHI OVERVIEW Repeater Functionality2.4 REMOTE NETWORK MANAGEMENT CAPABILITIES 2.3 STACKABLE CAPABILITIESRack Mount Hardware 2.5 OPTIONAL FEATURESEthernet Port Interface Modules EPIMs HubSTACK Interconnect Cables3.1 CABLE SPECIFICATIONS CHAPTER INSTALLATION REQUIREMENTS AND SPECIFICATIONSFiber Optic Budget and Propagation Delay 3.1.1 HubSTACK Interconnect Cable Requirements3.1.2 10BASE-FL Fiber Optic Network Requirements AttenuationImpedance 3.1.3 10BASE-T UTP and STP Cable SpeciﬁcationsLength Insertion Loss3.2 NETWORK PORT SPECIFICATIONS 3.4 TRANSCEIVER REQUIREMENTS 3.3 COM PORT REQUIREMENTSDelay Times JAM Speciﬁcations 3.5 OPERATING SPECIFICATIONSSystem Speciﬁcations Delay Time Start of Packets Speciﬁcations3.6 POWER SUPPLY REQUIREMENTS 3.8 AGENCY APPROVALS 3.8.1 Safety3.9 PHYSICAL SPECIFICATIONS 3.7 ENVIRONMENTAL REQUIREMENTS4.1 UNPACKING THE SEHI CHAPTER INSTALLATION4.3 INSTALLING THE SEHI 4.2 PRE-INSTALLATION TESTChapter 4 Installation In order to allow for proper cooling, there must be a two-inch 4.3.1 Tabletop or Shelf Installationclearance on either side and the back of the unit 4.3.2 Rackmount Installation Rack Mounting the SEHI Figure 4-4 Installing the Rack Mounting BracketsThe cooling fans at the rear panel of the SEHI must have 4.3.3 Stacking the SEHIChapter 4 Installation Figure 4-5 Installing the SEHI in the RackTo stack SEH non-intelligent hubs together, proceed as follows 4.4 CONNECTING THE SEHI TO THE POWER SOURCE 4.5 ADDING/REPLACING EPIMS 5.1 CONNECTING THE SEHI TO THE NETWORK CHAPTER CONNECTING TO THE NETWORK5.1.1 Connecting Network Ports Do not touch the ends of the ﬁber optic strands, and do not let Chapter 5 Connecting to the Networkthe ends come in contact with dust, dirt, or other contaminants 3. Attach the fiber labeled 2 to the applicable TX port, on the SEHI 5.1.2 Connecting a UTP Segment to an EPIM-T Connecting the SEHI to the Network 5.1.3 Connecting a Fiber Segment to an EPIM-F1/F2/F3SEHI User’s Guide 3. Attach the fiber labeled 2 to the applicable TX port on the module SEHI User’s Guide F1/F2 ST Connectors F1/F2 SMA 906 Connectors w Half Alignment SleevesSMA 905 Connectors F3 ST Connectors Connecting the SEHI to the Network5.1.4 Connecting a Thin Coaxial Segment to an EPIM-C function is disabled on the external transceiver connected to 5.1.5 Connecting an AUI Cable to an EPIM-AConnecting the SEHI to the Network Ensure that the Signal Quality Error SQE or “heartbeat” testb. Check the cable for continuity of EPIM 5.1.6 Connecting an AUI Cable to an EPIM-XON Position Toward Back5.2 FINISHING THE INSTALLATION 6.1 INSTALLATION CHECKOUT CHAPTER TROUBLESHOOTING6.2 USING LANVIEW SEHI-22FL 6.3 USING THE RESET BUTTON 6.4 SETTING THE NVRAM SWITCH CHAPTER LOCAL MANAGEMENT Table 7-1 Keyboard Conventions 7.1 LOCAL MANAGEMENT KEYBOARD CONVENTIONSChapter 7 Local Management SEHI User’s Guide7.2 MANAGEMENT TERMINAL SETUP Connect the console cable to the SEHI as follows Management Terminal Setup Parameters 7.3 ACCESSING LOCAL MANAGEMENT Figure 7-3 Feature Selection Screen 7.4 THE FEATURE SELECTION SCREENCOMMUNITY NAME 7.5 THE COMMUNITY NAME TABLE SCREENACCESS write access to Local Management. Super-UserEditing the Community Name Field 7.6 THE CONFIGURATION SCREEN The following sections explain each ﬁeld on the Conﬁguration screen Use the following steps to set the IP Address Using the Port Enable Override Setting the Default Gateway7.7 THE TRAP TABLE SCREEN Use the following steps to conﬁgure the Trap table 7.8 THE SNMP TOOLS SCREEN Allows the user to retrieve MIB objects using SNMP protocol Getting Individual OIDs Setting an OIDGetting the Next OID 5. Press ENTER. “DATA” appears Cycling Through OIDs 7.9 THE DEVICE STATISTICS SCREENExiting the SNMP Tools Screen The following sections describe Device Statistics screen ﬁelds This command lets the user enable the selected port To select a module or port Exiting the Device Statistics Screen Using the DISABLE PORT CommandAPPENDIX A EPIM INFORMATION A.1 EPIM SPECIFICATIONSA.1.1 EPIM-T Appendix A EPIM Information A.1.2 EPIM-F1 and EPIM-F2A.1.3 EPIM-F3 Connector Type A.1.4 EPIM-CGrounding Figure A-5 The EPIM-A and EPIM-X A.1.5 EPIM-A and EPIM-X AUI PortAPPENDIX B IMAGE FILE DOWNLOAD USING OIDs B.1 SETTING UP A UNIX WORKSTATION AS A TFTP SERVER B.2 STANDARD TFTP DOWNLOAD Step Appendix B Image File Download Using OIDsTable B-1 Standard TFTP Download Procedure SEHI User’s GuideIndex-1 INDEXNumerics SEHI User’s GuideIndex-2 IndexSEHI User’s Guide FRENCH POWER SUPPLY CORDGERMAN SPANISH