Cabletron Systems SEHI100TX manual Setting the Nvram Switch, Nvram Switch Location

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Setting the NVRAM Switch

6.4SETTING THE NVRAM SWITCH

To prevent the possibility of electrical shock, do not remove the chassis cover to access the NVRAM switch, and use only a non-metallictool when moving the NVRAM switch.

The SEHI uses NVRAM (Non-Volatile Random Access Memory) to store user-entered parameters such as IP address and Community Names. To reset these parameters to the factory defaults, refer to Figure 6-2 and perform the following steps:

1.With the power ON and using a non-metallictool, move the NVRAM switch to the UP position.

2.Press the RESET switch located on the front panel.

3.Wait until the unit boots (approximately 12 seconds).

4.Return the NVRAM switch to the DOWN position.

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Failure to return the NVRAM switch to the DOWN position will result in loss of user-entered parameters upon power shutdown and restart. The SEHI will clear NVRAM if the unit is restarted with the switch in the UP position.

Rear of Chassis

NVRAM Switch located behind grating

1511_02

Figure 6-2 NVRAM Switch Location

SEHI100TX User’s Guide

6-5

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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 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 Optional 100BASE-TX and 100BASE-FX EPIMs Rack Mounting CapabilitiesRemote Network Management HubSTACK Interconnect Cable Requirements Chapter Installation Requirements SpecificationsCable Specifications UTP Cable Speciﬁcations Multimode Speciﬁcations for the EPIM-100FX Network Cable Lengths COM Port Requirements Network Port SpecificationsEnvironmental Requirements Operating SpecificationsPower Supply 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-100FXConnecting to Network Ports Chapter Connecting to the NetworkConnecting the Sehi to the Network 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 Getting the Next OID Setting an OIDGetting Individual OIDs Walking Through OIDs Viewing Multiple OIDsExiting the Snmp Tools Screen Stepping Through OIDsCycling Through OIDs Device Statistics Screen Device Statistics ScreenDisplays the number of errors due to misaligned packets Module Number Sequence Selecting the Appropriate Module/PortExiting the Device Statistics Screen Using the Enable Port CommandUsing the Disable Port Command EPIM-100TX Appendix a Epim SpecificationsEpim Specifications 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