Cabletron Systems SEHI100TX manual Connecting a UTP Segment to an EPIM-100TX, Sehi Network Ports

Page 33

Chapter 5: Connecting to the Network

16X

5X

15X

4X

14X

3X

13X

2X

12X

1X

LNK

EPIM-100TX

EPIM

1

1511_10

Figure 5-1 SEHI Network Ports

2.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 is powered up.

b.Verify that the RJ45 connector on the twisted pair segment has the proper pinouts. Check the cable for continuity.

c.Check that the twisted pair connection meets dB loss and cable specifications outlined Chapter 2.

If a link is not established, contact Cabletron Systems Technical Support.

5.1.2Connecting a UTP Segment to an EPIM-100TX

The EPIM-100TX is often used to provide a connection between the SEHI and a bridge, router, or switch. Normally, in this conﬁguration, a “straight-through” cable is used and the EPIM crossover switch shown in Figure 5-2 is set to “not crossed over.”

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 connection. If the wires do not cross over, use the switch on the EPIM-100TX to internally cross over the RJ45 port. Refer to Figure 5-2 to properly set the EPIM-100TX crossover switch.

5-2	SEHI100TX User’s Guide

Image 33

Contents Intelligent Stackable HUB USER’S Guide SEHI100TX User’s Guide FCC Notice Cabletron SYSTEMS, INC. Program License Agreement United States Government Restricted Rights Contents Contents SEHI100TX User’s Guide Vii Chapter Introduction Using this ManualFollowing conventions are used throughout this document Document ConventionsRelated Manuals Getting HelpSehi Overview Chapter Sehi Features and OptionsSehi Features and Options Sehi FeaturesStackable Capabilities Rack Mounting Capabilities Remote Network ManagementOptional 100BASE-TX and 100BASE-FX EPIMs Chapter Installation Requirements Specifications Cable SpecificationsHubSTACK Interconnect Cable Requirements UTP Cable Speciﬁcations Multimode Speciﬁcations for the EPIM-100FX Network Cable Lengths COM Port Requirements Network Port SpecificationsOperating Specifications Power Supply RequirementsEnvironmental Requirements Agency Approvals Physical SpecificationsUnpacking the Sehi Chapter InstallationNvram Switch Location PRE-INSTALLATION CheckoutSEHI100TX-22 Tabletop or Shelf InstallationScrews Strain-Relief Bracket Rackmount InstallationRackmount Installation Installing the Sehi in the Rack Powering UP and Stacking the Sehi Repeat steps 3 through 6 until all SEH hubs are connected Install an EPIM-100TX or an EPIM-100FX as follows Installing the EPIM-100TX or the EPIM-100FXChapter Connecting to the Network Connecting the Sehi to the NetworkConnecting to Network Ports Sehi Network Ports Connecting a UTP Segment to an EPIM-100TXPosition X crossed over RX+ TX+ Position = Not crossed over EPIM-100FX Port Connecting a Fiber Segment to the EPIM-100FXTesting the Installation Installation Test Chapter TroubleshootingUsing Lanview Using Lanview Epim 1 RCV LED Using the Reset ButtonSetting the Nvram Switch Chapter Local Management Keyboard Conventions Function Local Management Keyboard ConventionsManagement Terminal Setup Console Cable Conﬁguration Management Terminal Setup Parameters Sehi Local Management Accessing Local ManagementFeature Selection Screen Feature Selection ScreenCommunity Name Table Screen Community Name Table ScreenEditing the Community Name Field Configuration Configuration ScreenDisplays the IP address of the Sehi Setting the Subnet Mask Setting the IP AddressUsing the Port Enable Override Setting the Default GatewayTrap Table Screen Exiting the Conﬁguration ScreenExiting the Trap Table Screen 1 Conﬁguring the Trap TableSnmp Tools Screen Snmp Tools ScreenLets you retrieve MIB objects using Snmp protocol Setting an OID Getting Individual OIDsGetting the Next OID Walking Through OIDs Viewing Multiple OIDsStepping Through OIDs Cycling Through OIDsExiting the Snmp Tools Screen Device Statistics Screen Device Statistics ScreenDisplays the number of errors due to misaligned packets Module Number Sequence Selecting the Appropriate Module/PortUsing the Enable Port Command Using the Disable Port CommandExiting the Device Statistics Screen Appendix a Epim Specifications Epim SpecificationsEPIM-100TX EPIM-100FX Appendix B Image File Download Using Oids Setting UP a Unix Workstation AS a Tftp Server Standard Local Download Table B-1 OIDs and Settings Numerics IndexIndex-2 Power Supply Cord