Cabletron Systems 42T, MICROMMAC-22T manual Using the LCD Display

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TROUBLESHOOTING

5.2 USING THE LCD DISPLAY

The MicroMMAC-T is equipped with an LCD and a LCD display button as shown in Figure 5-1.

LCD

MicroMMAC-24TTOKEN RING HUB WITH LANVIEW®

SUPPORTING 100 OHM UTP CABLE

LCD DISPLAY BUTTON

			CPU	ACT
4M	16M	DISPLAY RESET	16 Mb/s	MGMT
	SPEED	DISPLAY RESET	COM 2 COM 1
	SPEED			RO

2423

12 11

Figure 5-1. LCD Display

The LCD is a diagnostic tool for viewing the following important status information about the MicroMMAC-T:

•Power up diagnostics

•Revision levels

•Hardware, MAC address, or locally administered address

•IP address

•Error conditions.

The LCD presents four types of messages:

•Static System Messages

•Saved Alarm Messages

•Unsaved Initialization Messages

•Saved System Messages

The following sections describe messages for each category.

5-2

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Contents Page Iii FCC Notice Cabletron SYSTEMS, INC. Program License Agreement United States Government Restricted Rights Contents Troubleshooting Local ManagementSaved System Messages Viewing Power UP Diagnostic Tests Contents Overview Chapter IntroductionMicroMMAC-T Overview MicroMMAC-T Features TelnetActive TCU Ports Cable Signal PolaritySpeed Fault Protection Local ManagementFlash Eeprom Ring Speed SwitchCabletron’s Distributed LAN Monitor Mode Lanview LEDsLCD and LCD Display Button Reset ButtonCOM Port Applications MIB SupportGroup Subgroup Section Rmon MIB SupportRmon MIB RFC 1271/1513 Support Stackable Capabilities BRIDGING/ROUTING Capabilities Typical Stackable ConﬁgurationTelnet Capabilities 1 SNA/WAN IntegrationRemote Management Capabilities BRIMsRecommended Reading Getting HelpCable Specifications MicroMMAC-T Ports/CablesUTP Voice Grade and Category 3 Speciﬁcations UTP Cable SpeciﬁcationsAttenuation and Impedance Frequency Impedance AttenuationMaximum Number of Stations Maximum Lobe LengthsType 3 Media Filters UTP Maximum Lobe LengthsTypes Frequency Impedance Attenuation STP Cable SpeciﬁcationsSTP Cable Speciﬁcations STP Cable Type Ring Speed Mbps Maximum Trunk LengthsSTP Maximum Lobe Lengths STP Maximum Drive DistanceMultimode Fiber Optic Cable Speciﬁcations Mixed Cable TypesAttenuation Cable Type Attenuation Maximum Drive DistanceFiber Optic Budget Single Mode Fiber Optic Cable SpeciﬁcationsSingle Mode Fiber Optic Cable Speciﬁcations Crosstalk Cable RECOMMENDATIONS/TROUBLESHOOTINGTemperature NoiseCOM Port Specifications COM 1/COM 2 PortsSlip Tpim SpecificationsUPS TPIM-T1TPIM-T2 TPIM-T1 PinoutsTPIM-F2 TPIM-T4 PinoutsParameter Typical Worst Case Value Budget TPIM-F3TPIM-F2 Speciﬁcations Parameter Typical Minimum MaximumREQUIREMENTS/SPECIFICATIONS Output Min. Load Max. Load Max Power General SpecificationsPower Supply Requirements Environmental RequirementsPhysical SafetyService Unpacking the MicroMMAC-T Attaching the Strain Relief BracketInstalling the MicroMMAC-T Rack-Mounting the MicroMMAC-TInstalling of Rack-Mount Brackets Wall-Mounting the MicroMMAC-TWall-Mounting the MicroMMAC-T Resetting the MICROMMAC-T Free-Standing InstallationConnecting to a Power Source To change the ring speed Setting the Ring SpeedTo reset the MicroMMAC-T Setting the Nvram Switch To restore MicroMMAC-T parameters to the factory defaultsConnecting Lobe Port Cabling RJ45 Plug MIC ConnectorRJ45 Plug At TCU At device port10. UTP Conﬁguration Example To attach a lobe segment to a MicroMMAC-T network port 11. STP Conﬁguration ExamplePinout Cross-Reference for TPIMs Installing Tpim ModulesSignal RJ45 DB9 Ring-In Ring-Out Setting Phantom and RI/RO Switches Tpim Installation To install a TPIM, perform the following stepsConnecting STP Segments To connect a TPIM-T1 to a Twisted Pair SegmentConnecting Twisted Pair Segments To connect a segment to a TPIM-T2/-T4Connecting Fiber Optic Link Segments 16. The TPIM-T2/-T4To connect a ﬁber optic link segment to the TPIM-F2 /-F3 17. The TPIM-F2/-F3Checking the Installation To check MicroMMAC-T installationManagement Terminal Requirements Use Local Management to Do the FollowingTo attach a management terminal to the MicroMMAC-T Management Terminal Setup ParametersAttaching the Management Terminal Menu Function Selection Modem Cable Conﬁguration and SetupTerminal Settings for LM Terminal Accessing Local Management To access Local ManagementAccessing Local Management via Telnet MicroMMAC-TLocal Management ScreenSetup Menu Screen Accessing Local Management from a ModemUsing Local Management Main Menu ScreenSelecting a Menu Screen Option Setting or Modifying Local Management Screen FieldsWorking with Local Management Screens Exiting a Local Management Screen Exiting Your Local Management SessionSetting the System Date System Level ScreenSetting the System Time Setting the Host IP AddressModifying the Subnet Mask To modify the Subnet MaskSetting Automatic Beacon Recovery Process Abrp Fields Setting the Default GatewayTo set the Default Gateway To set the Beacon Recovery ﬁeld To set the Number of Retries ﬁeld Setting COM 1 and COM 2 ApplicationsSnmp Community Names Screen To set the Retry Interval ﬁeldSnmp Community Names Screen Community Name Access PolicySnmp Traps Screen Editing the Community Name ﬁeldTrap Destination Enable TrapsSetting Snmp Traps Trap Community NameRing Security Screen Ring Security Screen Stn Edit Security ModeStation Address Previousscreen SAVE/EXECUTENextscreen ReturnDeleting Stations from the Station Address Allowed List Viewing the Revised Allowed ListAdding Stations to the Station Address Allowed List Device Statistics Screen Device StatisticsSetting the Refresh Field Selecting the Device Statistics Counter ModeUsing the Accumulative Counter Mode Errors Received Isolating ErrorsAC Errors Ring InformationNON-ISOLATING Errors Lost Frame ErrorsFrame Copied Errors Chassis Status View ScreenMode Next Using the Operational Mode Screen 10. Chassis Status View Operational ScreenTo display the status of ports Using the Administrative Mode Screen To enable and disable select portsTo bypass all ports on a module To enable all ports for all modulesUsing the Ring OUT Enable Mode Screen To reconnect a module to the token ringTo switch to and from STN and RO Component Status ScreenMIB Navigator Screen 13. Component Status View ScreenTo escape from the MIB Navigator screen To access a list of MIB commandsTo get help on speciﬁc commands Navigation Built-In Special Navigational commandsMIB Commands Built-In commands SetFlash Download Screen To download a Flash imageDownload Method ﬁeld To chose the Runtime methodTo choose the Bootprom method Toggle from Runtime to Bootprom using the spacebarUsing Lanview LEDs Lanview LedsUsing the LCD Display LCD DisplayDisplayed Message Signiﬁcance Static System MessagesStatic System Messages Displayed Signiﬁcance Messages Alarm MessagesAlarm Messages Unsaved Failure or Error Messages Unsaved Initialization MessagesSaved System Messages Saved System MessagesNormal Unsaved Initialization Messages Displayed MessageViewing Power UP Diagnostic Tests Responding to Error MessagesTo execute a response option To return to Local ManagementPower Supply Cord