Cabletron Systems SEHI100TX manual PRE-INSTALLATION Checkout, Nvram Switch Location

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Chapter 4: Installation

4.2PRE-INSTALLATION CHECKOUT

The SEHI is equipped with an NVRAM reset switch (Figure 4-1) located behind the grillwork on the side of the hub. Ensure that this switch is in the DOWN position by looking in through the grillwork on the right side of the hub. If the switch is UP, move it into the DOWN position with a non-metallictool. Do not remove the chassis cover to perform this operation. Leaving the switch in the UP position results in user-installed parameters such as IP address and Community Names being cleared from NVRAM whenever the SEHI loses power and/or is reset. See Chapter 6, Section 6.4 for detailed instructions on setting the NVRAM switch.

Rear of Chassis

NVRAM Switch located behind grating

1511_02

Figure 4-1 NVRAM Switch Location

The SEHI may be installed on a tabletop or shelf, or in a 19-inch rack, and conﬁgured as a standalone or stacked hub.

Refer to Section 4.3 for information concerning a tabletop or shelf installation. Section 4.4 describes the rackmount installation.

4-2	SEHI100TX User’s Guide

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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 Using this Manual Chapter IntroductionDocument Conventions Following conventions are used throughout this documentGetting Help Related ManualsChapter Sehi Features and Options Sehi OverviewSehi Features Sehi Features and OptionsStackable 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 Network Port Specifications COM Port Requirements Operating Specifications Power Supply Requirements Environmental Requirements Physical Specifications Agency ApprovalsChapter Installation Unpacking the SehiPRE-INSTALLATION Checkout Nvram Switch LocationTabletop or Shelf Installation SEHI100TX-22Rackmount Installation Screws Strain-Relief BracketRackmount Installation Installing the Sehi in the Rack Powering UP and Stacking the Sehi Repeat steps 3 through 6 until all SEH hubs are connected Installing the EPIM-100TX or the EPIM-100FX Install an EPIM-100TX or an EPIM-100FX as followsChapter Connecting to the Network Connecting the Sehi to the NetworkConnecting to Network Ports Connecting a UTP Segment to an EPIM-100TX Sehi Network PortsPosition X crossed over RX+ TX+ Position = Not crossed over Connecting a Fiber Segment to the EPIM-100FX EPIM-100FX PortTesting the Installation Chapter Troubleshooting Installation TestUsing Lanview Using Lanview Using the Reset Button Epim 1 RCV LEDSetting the Nvram Switch Chapter Local Management Local Management Keyboard Conventions Keyboard Conventions FunctionManagement Terminal Setup Console Cable Conﬁguration Management Terminal Setup Parameters Accessing Local Management Sehi Local ManagementFeature Selection Screen Feature Selection ScreenCommunity Name Table Screen Community Name Table ScreenEditing the Community Name Field Configuration Screen ConfigurationDisplays the IP address of the Sehi Setting the IP Address Setting the Subnet MaskSetting the Default Gateway Using the Port Enable OverrideExiting the Conﬁguration Screen Trap Table Screen1 Conﬁguring the Trap Table Exiting the Trap Table ScreenSnmp Tools Screen Snmp Tools ScreenLets you retrieve MIB objects using Snmp protocol Setting an OID Getting Individual OIDsGetting the Next OID Viewing Multiple OIDs Walking Through OIDsStepping Through OIDs Cycling Through OIDsExiting the Snmp Tools Screen Device Statistics Screen Device Statistics ScreenDisplays the number of errors due to misaligned packets Selecting the Appropriate Module/Port Module Number SequenceUsing 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 Index NumericsIndex-2 Power Supply Cord