Cabletron Systems 42T, MICROMMAC-22T manual Cable Specifications, MicroMMAC-T Ports/Cables

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CHAPTER 2

REQUIREMENTS/SPECIFICATIONS

Read this chapter prior to installing the MicroMMAC-T. It contains operating specifications and requirements for power and cabling. To obtain satisfactory performance from this equipment, networks must meet the requirements and conditions specified in this chapter. Failure to follow these guidelines may result in poor network performance.

2.1 CABLE SPECIFICATIONS

Token Ring architecture provides for a set of Trunk Coupling Units (TCUs) connected by trunk cabling. To extend the trunk cabling, install TPIMs into the MicroMMAC-T’s RI/RO ports. TPIMs have embedded repeaters and provide trunk connections for UTP, STP, Multimode Fiber, and Single Mode Fiber cabling.

Attach stations to the TCU lobe ports with lobe cabling. Figure 2-1 shows a typical ports to cables configuration.

Ring Out TPIM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MicroMMAC-24T TOKEN RING HUB

LANVIEW®

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24

23

22

21

20

19

18

17

16

15

14

13

 

 

CPU

 

ACT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16 Mb/s

 

MGMT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM 2 COM 1

 

RO

12

11

10

9

8

7

6

5

4

3

2

1

 

RI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lobe Cabling

 

 

 

 

 

 

 

 

TCU Lobe Ports

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Token Ring Station

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trunk Cabling

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ring In TPIM

 

 

 

 

 

 

 

 

MicroMMAC-24T TOKEN RING HUB

 

LANVIEW®

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24

23

22

21

20

19

18

17

16

15

14

 

13

 

CPU

ACT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16 Mb/s

MGMT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM 2 COM 1

 

RO

12

11

10

9

8

7

6

5

4

3

2

 

1

RI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2-1. MicroMMAC-T Ports/Cables

2-1

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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 TelnetCable 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 SupportGroup Subgroup Section Rmon MIB SupportRmon MIB RFC 1271/1513 Support Stackable Capabilities BRIDGING/ROUTING Capabilities Typical Stackable Configuration1 SNA/WAN Integration Remote Management CapabilitiesTelnet Capabilities BRIMsRecommended Reading Getting HelpCable Specifications MicroMMAC-T Ports/CablesUTP Cable Specifications Attenuation and ImpedanceUTP Voice Grade and Category 3 Specifications Frequency Impedance AttenuationMaximum Lobe Lengths Type 3 Media FiltersMaximum Number of Stations UTP Maximum Lobe LengthsTypes Frequency Impedance Attenuation STP Cable SpecificationsSTP Cable Specifications Maximum Trunk Lengths STP Maximum Lobe LengthsSTP Cable Type Ring Speed Mbps STP Maximum Drive DistanceMixed Cable Types AttenuationMultimode Fiber Optic Cable Specifications Cable Type Attenuation Maximum Drive DistanceFiber Optic Budget Single Mode Fiber Optic Cable SpecificationsSingle Mode Fiber Optic Cable Specifications Cable RECOMMENDATIONS/TROUBLESHOOTING TemperatureCrosstalk NoiseCOM Port Specifications COM 1/COM 2 PortsTpim Specifications UPSSlip TPIM-T1TPIM-T2 TPIM-T1 PinoutsTPIM-F2 TPIM-T4 PinoutsTPIM-F3 TPIM-F2 SpecificationsParameter Typical Worst Case Value Budget Parameter Typical Minimum MaximumREQUIREMENTS/SPECIFICATIONS General Specifications Power Supply RequirementsOutput Min. Load Max. Load Max Power 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 ScreenAccessing Local Management from a Modem Using Local ManagementSetup Menu Screen 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 Setting COM 1 and COM 2 Applications Snmp Community Names ScreenTo set the Number of Retries field To set the Retry Interval fieldSnmp Community Names Screen Access Policy Snmp Traps ScreenCommunity Name Editing the Community Name fieldEnable Traps Setting Snmp TrapsTrap Destination Trap Community NameRing Security Screen Ring Security Screen Stn Edit Security ModeStation Address SAVE/EXECUTE NextscreenPreviousscreen 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 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 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 Normal Unsaved Initialization MessagesSaved System Messages Displayed MessageViewing Power UP Diagnostic Tests Responding to Error MessagesTo execute a response option To return to Local ManagementPower Supply Cord
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