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Cabletron Systems MICROMMAC, 42T Troubleshooting, 3. Alarm Messages, Displayed, Signiﬁcance

Models: 42T MICROMMAC MICROMMAC-22T

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TROUBLESHOOTING

5.2.2 Alarm Messages

Alarm messages (Table 5-3) describe events that occur within the MicroMMAC-T. To view the Alarm Messages queue, press the Display button (Figure 5-1) and hold for ﬁve seconds. Press the Display button to scroll through each message. If the Display button is not pressed again within ten seconds, the display defaults back to the product name.

	Table 5-3. Alarm Messages

Displayed		Signiﬁcance
Messages		Signiﬁcance
Messages


NO MESSAGES		No alarm messages in queue. This is the Alarm
IN QUEUE		Messages default setting.
IN QUEUE

TPIM		TPIM inserted into RI or RO.
Inserted

TPIM		TPIM removed from RI or RO.
Removed

Stack x		The x Stack inserted (where x is any value from 2 to
Inserted		5).
Inserted

Stack x		The x Stack removed (where x is any value from 2 to
Removed		5).
Removed

Stack x Port xx		Indicates unauthorized attempt to access net work
Violation		lobe ports.
Violation

uMMACT Port xx		Indicates unauthorized attempt to access network
Violation		lobe ports.

Ring		Indicates a station is attempting to recover from a
Beaconing		hardware problem on the ring.
Beaconing

Beacon		Indicates the ring has recovered from a beaconing
Recovered		situation.
Recovered

uMMACT Port xx		Indicates that a station has been removed from the
Removed		ring as a result of the beacon recovery process

5-4

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Cabletron Systems MICROMMAC-22T, 42T manual Troubleshooting, 3. Alarm Messages, Displayed, Signiﬁcance

Contents

MICROMMAC-22T/24T/42T/44T STACKABLE TOKEN RING INTELLIGENT HUBS USER’S GUIDECopyright March 1996 by Cabletron Systems, Inc DOC NOTICE FCC NOTICEVCCI NOTICE CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITYCABLETRON SOFTWARE PROGRAM LICENSE UNITED STATES GOVERNMENT RESTRICTED RIGHTS CONTENTS CHAPTER 2 REQUIREMENTS/SPECIFICATIONSCHAPTER 3 INSTALLATION CHAPTER 1 INTRODUCTIONCHAPTER 5 TROUBLESHOOTING CHAPTER 4 LOCAL MANAGEMENT5.2.4 Saved System Messages 5.3 VIEWING POWER UP DIAGNOSTIC TESTS CONTENTS1.1 CONTENTS OVERVIEW CHAPTER INTRODUCTIONDISPLAY RESET Figure 1-1. The MicroMMAC-T1.2 MicroMMAC-T OVERVIEW INTRODUCTIONTelnet 1.3 MicroMMAC-T FEATURESFigure 1-2. Typical MicroMMAC-T Conﬁguration Scenario Cable Signal Polarity Speed Fault ProtectionActive TCU Ports Local ManagementRing Speed Switch Cabletron’s Distributed LAN Monitor ModeFlash EEPROM LANVIEW LEDsReset Button COM Port ApplicationsLCD and LCD Display Button MIB SupportRMON MIB Support 1.4 STACKABLE CAPABILITIES Table 1-2. RMON MIB RFC 1271/1513 Support Cont1.5 BRIDGING/ROUTING CAPABILITIES Figure 1-3. Typical Stackable Conﬁguration1.6 REMOTE MANAGEMENT CAPABILITIES 1.5.1 SNA/WAN Integration1.7 TELNET CAPABILITIES 1.8 RECOMMENDED READING 1.9 GETTING HELPLocal Area Networks, Token Ring Access Method, IEEE Standard 802.5 Commercial Building Wiring Standard, EIA/TIA-568CHAPTER REQUIREMENTS/SPECIFICATIONS 2.1 CABLE SPECIFICATIONS2.1.1 UTP Cable Speciﬁcations Attenuation and ImpedanceType 3 Media Filters Maximum Lobe LengthsMaximum Number of Stations 2.1.2 STP Cable Speciﬁcations Attenuation and ImpedanceMaximum Lobe Lengths Table 2-3. STP Cable SpeciﬁcationsMaximum Trunk Lengths Maximum Number of StationsTable 2-4. STP Maximum Lobe Lengths Table 2-5. STP Maximum Drive DistanceThe maximum allowable ﬁber optic cable length is 2 km2187.2 yards. However, IEEE 802.5 speciﬁcations allow for a2.1.4 Single Mode Fiber Optic Cable Speciﬁcations Table 2-7. Single Mode Fiber Optic Cable SpeciﬁcationsFiber Optic Budget Maximum Trunk Lengths2.2 CABLE RECOMMENDATIONS/TROUBLESHOOTING TemperatureFiber Optic Budget Crosstalk2.3 COM PORT SPECIFICATIONS 2.4 TPIM SPECIFICATIONS Booting/DiagnosticsLocal Management SLIPTPIM-T2 TPIM-T4NOTE Transmitter power and receive sensitivity levels, shown in TPIM-F2REQUIREMENTS/SPECIFICATIONS TPIM-F3TPIM-F2 Speciﬁcations ParameterWhen measuring power levels with an Average Power Meter, add 3 dBm Table 2-9. TPIM-F3 Speciﬁcations2.5.1 Power Supply Requirements 2.5 GENERAL SPECIFICATIONS2.5.2 Environmental Requirements 2.5.3 Safety Service2.5.4 Physical 2.5.53.1 UNPACKING THE MicroMMAC-T CHAPTER INSTALLATION3.2 ATTACHING THE STRAIN RELIEF BRACKET 3.3.1 Rack-Mounting the MicroMMAC-T 3.3 INSTALLING THE MicroMMAC-TINSTALLATION Figure 3-2. Installing of Rack-Mount Brackets 3.3.2 Wall-Mounting the MicroMMAC-TFigure 3-3. Installing the MicroMMAC-T in a 19-inch Rack Figure 3-4. Wall-Mounting the MicroMMAC-T Molly Screw Anchors Molly Screws Bracket Screws Wall Mounting Bracket3.3.3 Free-Standing Installation 3.4 CONNECTING TO A POWER SOURCE3.5 RESETTING THE MICROMMAC-T Figure 3-5. Free-Standing InstallationTo reset the MicroMMAC-T 3.6 SETTING THE RING SPEEDTo change the ring speed 3.7 SETTING THE NVRAM SWITCH To restore MicroMMAC-T parameters to the factory defaults3.8 CONNECTING LOBE PORT CABLING NOTE Clearing and resetting NVAM does not reset the date and timeINSTALLATION RJ45 Plugat TCU at device portINSTALLATION Figure 3-10. UTP Conﬁguration Example3-10 Lobe CableINSTALLATION To attach a lobe segment to a MicroMMAC-T network portFigure 3-11. STP Conﬁguration Example Figure 3-12. MicroMMAC-T Network Ports3.9 INSTALLING TPIM MODULES 3.9.1 Setting Phantom and RI/RO Switches Table 3-1. Pinout Cross-Reference for TPIMs ContTo install a TPIM, perform the following steps 3.9.2 TPIM InstallationCAUTION Observe all static precautions while handling TPIMs 3.9.3 Connecting STP Segments To connect a TPIM-T1 to a Twisted Pair Segment3.9.4 Connecting Twisted Pair Segments To connect a segment to a TPIM-T2/-T43.9.5 Connecting Fiber Optic Link Segments Figure 3-16. The TPIM-T2/-T4To connect a ﬁber optic link segment to the TPIM-F2 /-F3 Figure 3-17. The TPIM-F2/-F33.10 CHECKING THE INSTALLATION To check MicroMMAC-T installation4.1 MANAGEMENT TERMINAL REQUIREMENTS CHAPTER LOCAL MANAGEMENTUse Local Management to Do the Following 4.1.1 Attaching the Management Terminal 4.1.2 Management Terminal Setup ParametersTo attach a management terminal to the MicroMMAC-T 4.1.3 Modem Cable Conﬁguration and Setup Table 4-1. Terminal Settings for LM Terminal4.2 ACCESSING LOCAL MANAGEMENT To access Local Management4.2.1 Accessing Local Management via Telnet Figure 4-3. MicroMMAC-T Local Management Screen4.2.2 Accessing Local Management from a Modem 4.3 USING LOCAL MANAGEMENTSETUP MENU Screen MAIN MENU Screen4.3.1 Working with Local Management Screens Setting or Modifying Local Management Screen FieldsSETUP MENU STATUS MENU DEVICE STATISTICS MIB NAVIGATOR EXIT SETUP MENUExiting a Local Management Screen Exiting Your Local Management Session4.3.2 The SYSTEM LEVEL Screen Setting the System DateSetting the System Time Setting the Host IP AddressModifying the Subnet Mask To modify the Subnet MaskSetting the Default Gateway To set the Default GatewaySetting Automatic Beacon Recovery Process ABRP Fields NOTE ARBP is supported only by Cabletron productsTo set the Beacon Recovery ﬁeld 4.3.3 The SNMP COMMUNITY NAMES Screen Setting COM 1 and COM 2 ApplicationsTo set the Number of Retries ﬁeld To set the Retry Interval ﬁeldRead-Write The user can view all LM ﬁelds and can edit all but the 4.3.4 The SNMP TRAPS Screen Access PolicyCommunity Name Editing the Community Name ﬁeldEnable Traps Setting SNMP TrapsTrap Destination Trap Community Name4.3.5 The RING SECURITY Screen You can select from two modes of ring security Alarm Only Security Mode STATION ADDRESSStn Edit NOTE The NMS receives each station added trap once onlyChanging the Security Mode SAVE/EXECUTENEXTSCREEN PREVIOUSSCREENViewing the Revised Allowed List Adding Stations to the STATION ADDRESS Allowed ListDeleting Stations from the STATION ADDRESS Allowed List NOTE You cannot delete the Micro-MMAC-T address from the list4.3.6 The DEVICE STATISTICS Screen DEVICE STATISTICSSelecting the Device Statistics Counter Mode Using the ACCUMULATIVE Counter ModeSetting the Refresh Field Frames ReceivedErrors Received ISOLATING ERRORSLine Errors Burst ErrorsAC Errors Abort Transmit ErrorsInternal Errors RING INFORMATIONPorts Enabled NON-ISOLATING ERRORSLost Frame Errors Ring Number4.3.7 The CHASSIS STATUS VIEW Screen Frame Copied ErrorsRcvr Congestion Errors Token ErrorsPort Status ModeVirtual Flexible Network Bus VFNB Screen Mode Status ENABLE ALL PORTS ADMINISTRATIVE mode onlyNEXT PREVIOUSUsing the OPERATIONAL Mode Screen Setting the REFRESH FieldReturn key To display the status of ports To display the status of RI/RO ports, BRIMs, or the MicroSNAC deviceUsing the ADMINISTRATIVE Mode Screen To enable and disable select portsTo enable all ports for all modules Using the RING OUT ENABLE Mode ScreenTo bypass all ports on a module To reconnect a module to the token ring4.3.8 The COMPONENT STATUS Screen To switch to and from STN and RO4.3.9 The MIB NAVIGATOR Screen Figure 4-13. COMPONENT STATUS VIEW ScreenTo get help on speciﬁc commands To access a list of MIB commandsTo escape from the MIB NAVIGATOR screen bran Built-In commands nexttree whoami4.3.10 The FLASH DOWNLOAD Screen pingsnmp branch snmpgetDownload Method ﬁeld To chose the RUNTIME methodTo choose the BOOTPROM method 2. Toggle from RUNTIME to BOOTPROM using the spacebarFlash Image Server IP Flash Image File NameCHAPTER TROUBLESHOOTING 5.1 USING LANVIEW LEDs5.2 USING THE LCD DISPLAY 5.2.1 Static System Messages Table 5-2. Static System Messages5.2.2 Alarm Messages TROUBLESHOOTINGTable 5-3. Alarm Messages DisplayedTable 5-3. Alarm Messages Cont 5.2.3 Unsaved Initialization MessagesTable 5-4. Unsaved Failure or Error Messages Table 5-5. Normal Unsaved Initialization Messages 5.2.4 Saved System MessagesTable 5-6. Saved System Messages NOTE The LCD displays the following message whenever the POWER 5.3 VIEWING POWER UP DIAGNOSTIC TESTSResponding to Error Messages To execute a response option To return to Local ManagementPOWER SUPPLY CORD GERMANSPANISH FRENCH