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

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

Image 98

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

Contents

Page Iii FCC Notice Cabletron SYSTEMS, INC. Program License Agreement United States Government Restricted Rights Contents Troubleshooting Local Management Saved System Messages Viewing Power UP Diagnostic Tests Contents Overview Chapter Introduction MicroMMAC-T Overview MicroMMAC-T Features Telnet Active TCU Ports Cable Signal PolaritySpeed Fault Protection Local Management Flash Eeprom Ring Speed SwitchCabletron’s Distributed LAN Monitor Mode Lanview LEDs LCD and LCD Display Button Reset ButtonCOM Port Applications MIB Support Group Subgroup Section Rmon MIB SupportRmon MIB RFC 1271/1513 Support Stackable Capabilities BRIDGING/ROUTING Capabilities Typical Stackable Conﬁguration Telnet Capabilities 1 SNA/WAN IntegrationRemote Management Capabilities BRIMs Recommended Reading Getting Help Cable Specifications MicroMMAC-T Ports/Cables UTP Voice Grade and Category 3 Speciﬁcations UTP Cable SpeciﬁcationsAttenuation and Impedance Frequency Impedance Attenuation Maximum Number of Stations Maximum Lobe LengthsType 3 Media Filters UTP Maximum Lobe Lengths Types Frequency Impedance Attenuation STP Cable SpeciﬁcationsSTP Cable Speciﬁcations STP Cable Type Ring Speed Mbps Maximum Trunk LengthsSTP Maximum Lobe Lengths STP Maximum Drive Distance Multimode Fiber Optic Cable Speciﬁcations Mixed Cable TypesAttenuation Cable Type Attenuation Maximum Drive Distance Fiber Optic Budget Single Mode Fiber Optic Cable SpeciﬁcationsSingle Mode Fiber Optic Cable Speciﬁcations Crosstalk Cable RECOMMENDATIONS/TROUBLESHOOTINGTemperature Noise COM Port Specifications COM 1/COM 2 Ports Slip Tpim SpecificationsUPS TPIM-T1 TPIM-T2 TPIM-T1 Pinouts TPIM-F2 TPIM-T4 Pinouts Parameter Typical Worst Case Value Budget TPIM-F3TPIM-F2 Speciﬁcations Parameter Typical Minimum Maximum REQUIREMENTS/SPECIFICATIONS Output Min. Load Max. Load Max Power General SpecificationsPower Supply Requirements Environmental Requirements Physical SafetyService Unpacking the MicroMMAC-T Attaching the Strain Relief Bracket Installing the MicroMMAC-T Rack-Mounting the MicroMMAC-T Installing of Rack-Mount Brackets Wall-Mounting the MicroMMAC-T Wall-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 defaults Connecting Lobe Port Cabling RJ45 Plug MIC Connector RJ45 Plug At TCU At device port 10. UTP Conﬁguration Example To attach a lobe segment to a MicroMMAC-T network port 11. STP Conﬁguration Example Pinout 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 steps Connecting STP Segments To connect a TPIM-T1 to a Twisted Pair Segment Connecting Twisted Pair Segments To connect a segment to a TPIM-T2/-T4 Connecting Fiber Optic Link Segments 16. The TPIM-T2/-T4 To connect a ﬁber optic link segment to the TPIM-F2 /-F3 17. The TPIM-F2/-F3 Checking the Installation To check MicroMMAC-T installation Management Terminal Requirements Use Local Management to Do the Following To 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 Management Accessing Local Management via Telnet MicroMMAC-TLocal Management Screen Setup Menu Screen Accessing Local Management from a ModemUsing Local Management Main Menu Screen Selecting a Menu Screen Option Setting or Modifying Local Management Screen FieldsWorking with Local Management Screens Exiting a Local Management Screen Exiting Your Local Management Session Setting the System Date System Level Screen Setting the System Time Setting the Host IP Address Modifying the Subnet Mask To modify the Subnet Mask Setting 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 ﬁeld Snmp Community Names Screen Community Name Access PolicySnmp Traps Screen Editing the Community Name ﬁeld Trap Destination Enable TrapsSetting Snmp Traps Trap Community Name Ring Security Screen Ring Security Screen Stn Edit Security ModeStation Address Previousscreen SAVE/EXECUTENextscreen Return Deleting Stations from the Station Address Allowed List Viewing the Revised Allowed ListAdding Stations to the Station Address Allowed List Device Statistics Screen Device Statistics Setting the Refresh Field Selecting the Device Statistics Counter ModeUsing the Accumulative Counter Mode Errors Received Isolating Errors AC Errors Ring Information NON-ISOLATING Errors Lost Frame Errors Frame Copied Errors Chassis Status View Screen Mode Next Using the Operational Mode Screen 10. Chassis Status View Operational Screen To display the status of ports Using the Administrative Mode Screen To enable and disable select ports To 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 ring To switch to and from STN and RO Component Status Screen MIB Navigator Screen 13. Component Status View Screen To 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 Set Flash Download Screen To download a Flash image Download Method ﬁeld To chose the Runtime method To choose the Bootprom method Toggle from Runtime to Bootprom using the spacebar Using Lanview LEDs Lanview Leds Using the LCD Display LCD Display Displayed Message Signiﬁcance Static System MessagesStatic System Messages Displayed Signiﬁcance Messages Alarm MessagesAlarm Messages Unsaved Failure or Error Messages Unsaved Initialization Messages Saved System Messages Saved System MessagesNormal Unsaved Initialization Messages Displayed Message Viewing Power UP Diagnostic Tests Responding to Error Messages To execute a response option To return to Local Management Power Supply Cord