Cabletron Systems SEHI-34 manual General, Delay Times Start of Packets, Delay Times JAM, Preamble

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INSTALLATION REQUIREMENTS/SPECIFICATIONS

2.6OPERATING SPECIFICATIONS

The operating specifications for the SEHI are described in this section. Cabletron Systems reserves the right to change these specifications at any time without notice.

GENERAL

Operating System Memory:

1.5 MB

Internal Processor:

Intel i960 operating at 16 MHz

Ethernet Controller:

National Semiconductor

 

DP83916

Non-Volatile RAM:

32 KB with battery back-up

EPROM:

64 KB

FLASH MEMORY:

1 MB

Delay Times (Start of Packets):

Twisted Pair to EPIM- A

1.10 microseconds

Twisted Pair to Twisted Pair

1.00 microseconds

EPIM-A to Twisted Pair

1.00 microseconds

Delay Times (JAM):

 

Twisted Pair to EPIM-A

960 nanoseconds

Preamble:

 

Input:

Minimum of 40 bits required

Output:

64 bits min. (last 2 bits are 1, 1)

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Contents 10BASE-T Intelligent Stackable HUB USER’S Guide Printed On Recycled Paper DOC Notice FCC NoticeCabletron Software Program License Cabletron SYSTEMS, INC Program License AgreementUnited States Government Restricted Rights Exclusion of Warranty Disclaimer of LiabilityTable of Contents Local Management InstallationConnecting to the Network TroubleshootingContents Appendix B Twisted Pair Wiring Tables A-1 Chapter Introduction Using this ManualSehi Overview Introduction Getting HelpFlash EEPROMs Sehi FeaturesRepeater Functionality Polarity Detection and CorrectionStackable Capabilities Reset ButtonLanview LEDs Local ManagementEpim Introduction Optional FeaturesRack Mount or Wall Mount Hardware Daughter Board Upgrade KitRelated Manuals HubSTACK Interconnect Cable Requirements Cable SpecificationsJitter LengthInsertion Loss ImpedanceNoise DelayTemperature CrosstalkCable Type Attenuation Maximum Cable Length Fiber Optic Budget and Propagation DelayInstallation REQUIREMENTS/SPECIFICATIONS Terminators ConnectorsThin-Net Network Requirements for the EPIM-C Module Cable TypeAUI Cable Requirements for the EPIM-A and EPIM-X Modules Network Port SpecificationsAUI Cable SEHI-32 and SEHI-34 Network Port Specifications SEHI-22 and SEHI-24 Network Port SpecificationsPin Champ Connector EPIM-T Installation REQUIREMENTS/SPECIFICATIONS Epim SpecificationsParameter Typical Worst Worst Case Typical Value Budget EPIM-F1 and EPIM-F2EPIM-F3 EPIM-F3Parameter Typical Minimum Maximum EPIM-C Connector TypeEPIM-A and EPIM-X EPIM-A and EPIM-X AUI PortTransceiver Requirements COMPreamble Delay Times Start of PacketsDelay Times JAM GeneralJAM Output Fault ProtectionPower Supply Requirements Output Min. Load Max. Load Max PowerPhysical SafetyUnpacking the Sehi Installing the SehiStacking the Sehi Stacking the Sehi Disconnect SEH and Sehi Interconnect Cables At the OUT Port Attaching the Strain Relief BracketRack Mounting the Sehi Installing the Sehi in the RackWall Mounting the Sehi Shelf or Table-top Installation Free-Standing InstallationInstallation Connecting the Sehi to the Power Source Connecting to Network Ports, SEHI-22 and SEHI-24 Connecting the Sehi to the NetworkEPIM-2 Connecting to Network Ports, SEHI-32 and SEHI-34 EPIM-T Cross-over Switch Connecting a UTP Segment to an EPIM-TConnecting to the Network Connecting to the Network Connecting to the Network Connecting a Thin-Net Segment to an EPIM-C EPIM-C EPIM-A Connecting an AUI Cable to an EPIM-AConnecting an AUI Cable to an EPIM-X On Position Toward Back Epim OFF Position Toward Front Finishing the InstallationInstallation CHECK-OUT Chapter TroubleshootingUsing Lanview CPU PWRLNK Troubleshooting CLNUsing the Reset Button RCVChapter Local Management Local Management Management Terminal Requirements Management Terminal Connection Console Cable ConfigurationSetup Management Terminal Setup ParametersMenu Function Selection Display Setup General SetupSehi Local Management Local Management Accessing Local ManagementFeature Selection Screen Community Name Table Screen Local Management Using the Local Management ScreensCommunity Name AccessEditing the Community Name Field IP Address Configuration ScreenSubNet Mask Default GatewayPort Enable Override Setting the IP AddressSetting the Subnet Mask Using the Port Enable Override Setting the Default GatewayTrap Table Screen Exiting the Configuration ScreenTrap IP Address Configuring the Trap TableSnmp Community Name TrapsSnmp Tools Screen Exiting the Trap Table ScreenGet Next OID PrependGet SetCycles WalkRecall-OID StepGetting the Next OID Getting Individual OIDsViewing Multiple OIDs Setting an OIDStepping Through OIDs Walking Through OIDsCycling Through OIDs Device Statistics Screen Exiting the Snmp Tools ScreenPort Admin. Status Errors ReceivedCRC Errors Alignment ErrorsPort Seg. Status Enable PortDisable Port Update-FreqSelecting the Appropriate Module/Port Using the Enable Port CommandExiting the Device Statistics Screen Using the Disable Port CommandTwisted Pair Wiring Tables Appendix a Twisted Pair Wiring TablesA-2 A-3 A-4 10BASE-T From Punch Down To RJ-45 Into Block Wallplate OfficeDrop Device A-6 A-7 Champ Down Block If Required Ethernet Device SEHI-32/34 Punch Wall PlateFigure A-1. Punch Down Block A-9 French Power Supply CordGerman Spanish
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