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Cabletron Systems MICROMMAC-22T, 42T manual Maximum Lobe Lengths, Type 3 Media Filters

Models: 42T MICROMMAC MICROMMAC-22T

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REQUIREMENTS/SPECIFICATIONS

Maximum Lobe Lengths

Lobe length is the physical length of the cable connecting a station to its TCU port at the MicroMMAC-T. Table 2-2 lists the maximum lobe cable length for ring speeds of 4 and 16 Mbps. The values listed refer to total lengths made up of UTP cable only.

Table 2-2. UTP Maximum Lobe Lengths

UTP Cable Type	Maximum Lobe Length
	4 Mbps	16 Mbps


Category 3	200 meters	100 meters
	(656 feet)	(328 feet)

Category 4	200 meters	100 meters
	(656 feet)	(328 feet)

Category 5	250 meters	120 meters
	(820 feet)	(394 feet)

Type 3 Media Filters

A Type 3 Media Filter is required when connecting a UTP lobe segment from a MicroMMAC-22T or MicroMMAC-24T to a station supporting STP cabling. Cabletron Systems offers the following Type 3 Media Filters:

•TRMF, RJ45 (UTP) connector to 10-inch DB9 (STP) cable with

LANVIEW

•TRMF-2, RJ45 (UTP) connector to DB9 (STP) connector

Maximum Number of Stations

When UTP lobe cabling is used in any ring segment, the number of ring stations supported by the MicroMMAC-T is limited to 150, regardless of the operating ring speed.

2-3

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Cabletron Systems MICROMMAC-22T, 42T manual Maximum Lobe Lengths, Type 3 Media Filters, Maximum Number of Stations

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 CHAPTER 3 INSTALLATION CONTENTSCHAPTER 2 REQUIREMENTS/SPECIFICATIONS CHAPTER 1 INTRODUCTIONCHAPTER 5 TROUBLESHOOTING CHAPTER 4 LOCAL MANAGEMENT5.2.4 Saved System Messages 5.3 VIEWING POWER UP DIAGNOSTIC TESTS CONTENTSDISPLAY RESET 1.1 CONTENTS OVERVIEWCHAPTER INTRODUCTION Figure 1-1. The MicroMMAC-T1.2 MicroMMAC-T OVERVIEW INTRODUCTIONTelnet 1.3 MicroMMAC-T FEATURESFigure 1-2. Typical MicroMMAC-T Conﬁguration Scenario Active 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 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 Local Area Networks, Token Ring Access Method, IEEE Standard 802.5 1.8 RECOMMENDED READING1.9 GETTING HELP 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 Maximum Lobe Lengths 2.1.2 STP Cable SpeciﬁcationsAttenuation and Impedance Table 2-3. STP Cable SpeciﬁcationsTable 2-4. STP Maximum Lobe Lengths Maximum Trunk LengthsMaximum Number of Stations Table 2-5. STP Maximum Drive Distance2187.2 yards. However, IEEE The maximum allowable ﬁberoptic cable length is 2 km 802.5 speciﬁcations allow for aFiber Optic Budget 2.1.4 Single Mode Fiber Optic Cable SpeciﬁcationsTable 2-7. Single Mode Fiber Optic Cable Speciﬁcations Maximum Trunk LengthsFiber Optic Budget 2.2 CABLE RECOMMENDATIONS/TROUBLESHOOTINGTemperature Crosstalk2.3 COM PORT SPECIFICATIONS Local Management 2.4 TPIM SPECIFICATIONSBooting/Diagnostics SLIPTPIM-T2 TPIM-T4NOTE Transmitter power and receive sensitivity levels, shown in TPIM-F2TPIM-F2 Speciﬁcations REQUIREMENTS/SPECIFICATIONSTPIM-F3 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 2.5.4 Physical 2.5.3 SafetyService 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 Bracket3.5 RESETTING THE MICROMMAC-T 3.3.3 Free-Standing Installation3.4 CONNECTING TO A POWER SOURCE 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 timeat TCU INSTALLATIONRJ45 Plug at device port3-10 INSTALLATIONFigure 3-10. UTP Conﬁguration Example Lobe CableFigure 3-11. STP Conﬁguration Example INSTALLATIONTo attach a lobe segment to a MicroMMAC-T network port 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 ScreenSETUP MENU Screen 4.2.2 Accessing Local Management from a Modem4.3 USING LOCAL MANAGEMENT MAIN MENU ScreenSETUP MENU STATUS MENU DEVICE STATISTICS MIB NAVIGATOR EXIT 4.3.1 Working with Local Management ScreensSetting or Modifying Local Management Screen Fields 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 Automatic Beacon Recovery Process ABRP Fields Setting the Default GatewayTo set the Default Gateway NOTE ARBP is supported only by Cabletron productsTo set the Beacon Recovery ﬁeld To set the Number of Retries ﬁeld 4.3.3 The SNMP COMMUNITY NAMES ScreenSetting COM 1 and COM 2 Applications To set the Retry Interval ﬁeldRead-Write The user can view all LM ﬁelds and can edit all but the Community Name 4.3.4 The SNMP TRAPS ScreenAccess Policy Editing the Community Name ﬁeldTrap Destination Enable TrapsSetting SNMP Traps Trap Community Name4.3.5 The RING SECURITY Screen You can select from two modes of ring security Alarm Only Stn Edit Security ModeSTATION ADDRESS NOTE The NMS receives each station added trap once onlyNEXTSCREEN Changing the Security ModeSAVE/EXECUTE PREVIOUSSCREENDeleting Stations from the STATION ADDRESS Allowed List Viewing the Revised Allowed ListAdding Stations to the STATION ADDRESS Allowed List NOTE You cannot delete the Micro-MMAC-T address from the list4.3.6 The DEVICE STATISTICS Screen DEVICE STATISTICSSetting the Refresh Field Selecting the Device Statistics Counter ModeUsing the ACCUMULATIVE Counter Mode Frames ReceivedLine Errors Errors ReceivedISOLATING ERRORS Burst ErrorsInternal Errors AC ErrorsAbort Transmit Errors RING INFORMATIONLost Frame Errors Ports EnabledNON-ISOLATING ERRORS Ring NumberRcvr Congestion Errors 4.3.7 The CHASSIS STATUS VIEW ScreenFrame Copied Errors Token ErrorsPort Status ModeVirtual Flexible Network Bus VFNB NEXT Screen Mode StatusENABLE ALL PORTS ADMINISTRATIVE mode only 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 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 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 tree Built-In commandsnext whoamisnmp branch 4.3.10 The FLASH DOWNLOAD Screenping snmpgetDownload Method ﬁeld To chose the RUNTIME methodFlash Image Server IP To choose the BOOTPROM method2. Toggle from RUNTIME to BOOTPROM using the spacebar 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 MessagesTable 5-3. Alarm Messages 5.2.2 Alarm MessagesTROUBLESHOOTING 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 ManagementSPANISH POWER SUPPLY CORDGERMAN FRENCH