Cabletron Systems STHI manual Nvram Reset Switch

Page 35

NVRAM Reset Switch

4.4 NVRAM Reset Switch

The STHI incorporates a recessed NVRAM Reset switch (see Figure 4-2) which initializes NVRAM, the nonvolatile random access memory. To use it, toggle the switch and then reset the STHI. This clears all user configurations and settings and returns the STHI to its factory defaults.

STHIHubSTACK TOKEN RING

HUB

 

 

-24

SUPPORTING

 

WITH

 

 

 

100 OHM

 

 

 

 

 

 

UTP CABLELANVIEW®

 

4M

 

 

 

 

 

 

16M

 

 

 

 

 

 

SPEED

 

 

 

 

 

 

 

RESET

 

 

 

CPU

 

 

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16 Mb/s

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Figure 4-2. NVRAM Switch

NVRAM RESET SWITCH IN HERE

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Contents Sthi Intelligent Token Ring Stackable HUB USER’S Guide Page FCC Notice Cabletron Software Program License United States Government Restricted Rights Introduction Requirements & SpecificationsInstallation Local Management TroubleshootingAppendix a Tpim Specifications Appendix B Media Specifications Sthi Overview Contents of This ManualLanview LEDs Sthi OverviewTCU Ports Lobe Port and Multiple Ring Out Port ConfigurationsRing Speed Fault Protection 3 RI & RO Ports Daughter Board Upgrade KitMedia Type Connector Active CircuitrySupport for Passive MAU Workgroups Automatic Beacon Recovery ProcessHub-By-Hub Bypass Control IP Address Discovery Improved Protection from BeaconingFlash Downloads DAISY-CHAIN MAU Configuration Local Management Related ManualsGetting Help Related ManualsGetting Help Maximum Number of Stations on a Ring General Networking ConsiderationsCrosstalk TemperatureInstallation Recommendations General Networking ConsiderationsTCU and COM Ports Operating SpecificationsOperating Specifications Hubstack Interconnect CablesRJ45 to DB25 Connector Pinout Ring Speed Supported MIB GroupsStandard MIBs Cabletron Enterprise MIBsRing Sequence SafetyEnvironmental Requirements Physical SpecificationsComputing Hardware Unpacking the Sthi Installing the SthiRack-Mounting the Sthi Installing the SthiStacking the Sthi Attaching the Strain Relief BracketRack Mounting Brackets Wall-Mounting the SthiInstalling the Sthi Wall-mounting the Sthi Free-Standing InstallationsConnecting the Sthi to the Power Source Tpim InstallationFinishing the Installation Tpim InstallationColor Condition Lanview LED SignalsFailure to Link on Enabled Port Trouble ResolutionTrouble Resolution Loss Of PowerManagement Failure Reset ButtonReset Button Reset ButtonNvram Reset Switch Nvram Reset SwitchLocal Management Accessing LMMenu Parameter Setting Accessing LMDumb Terminal Configuration Entering LM Console Cable ConfigurationWorking with LM Screens Using LM ScreensUsing LM Screens Invoking Menu Options or Screen CommandsExiting the Local Management Interface Session Setting or Modifying FieldsSystem Level Password Screen Main Menu Device Setup StatusScreen Hierarchy Screen IntroductionsDevice Statistics Snmp TrapsChassis Status View Component StatusIP Address System Level ScreenSystem Level Screen System Date and System TimeRetry Interval Enable IP Address DiscoverySubnet Mask Number of Retries Enable Beacon RecoveryMAC Address Locally Administered AddressSnmp Community Names Screen Snmp Community Names ScreenRead-write Access PolicyCommunity Name Read-onlyTrap Destination Enable TrapsSnmp Traps Screen Snmp Traps ScreenFunctions of the Chassis Status View Screen Screen Mode Screen CommandChassis Status View Screen Chassis Status View ScreenMultiplexer Configuration Fields Administrative Mode Port Configuration FieldsEach port field whether Tpim or TCU may be set as follows Ring OUT Enable Mode Each Ring port Tpim port or Ring Out TCU may be listed as Operational ModeNext and Previous Component Status ScreenComponent Status Screen Device Statistics Screen Device Statistics ScreenAccumulate Screen ModeBeacon States Errors ReceivedFrames Received KBytes ReceivedStations on a Ring Ports EnabledRing Status Ring NumberAC Errors Isolating Errors Fields GroupLine Errors Burst ErrorsFrame Copied Errors Internal ErrorsNon-Isolating Errors Group Lost Frame ErrorsSnmp Tool Screen Token ErrorsFrequency Errors Snmp Tool Screen3 GET OID PrependStep Getnext9 SET WalkCycles Firmware Image Downloads RepeatCtDLCommitRAMtoFlash Twisted Pair Tpim Pinouts OverviewFiber Optic Tpim Specifications Fiber Optic Tpim SpecificationsBudget TPIM-F2 for Multimode FiberParameter Typical Worst Case Parameter Typical Minimum Maximum TPIM-F3 for Single Mode FiberA-5 UTP Cable Categories Unshielded Twisted Pair UTPPer 100m @ ≥100m Operating Electrical SignalUnshielded Twisted Pair UTP Attenuation Loss Cat FrequencyCategory Shielded Twisted Pair STPShielded Twisted Pair STP @ 4 Mbps @ 16 MbpsMixed STP Cable Types Operational Attenuation perType Frequency 1000 m 1000 ft STP Lobe LengthsTotal Maximum Single Mode and Multimode Fiber Optic CablingSingle Mode and Multimode Fiber Optic Cabling Max. Lobe Length Max. Drive Distance Type Mbps
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