Enterasys Networks 2G4072-52 manual Rx Tx

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Connecting to the Network

Figure 3-4 Connecting a Twisted Pair Segment to the 2G4072-52

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RESET

 

CPU

CONSOLE

PWR

 

GROUP 3

GROUP

1

3

4

SELECT

GROUP 2

 

 

 

GROUP 1

 

 

 

RX TX

2

1 RJ45 connector

2 RJ45 port connector

3 GROUP SELECT button

3.Verify that a link exists by checking that the port RX (Receive) LED is ON (flashing amber, blinking green, or solid green). If the RX LED is OFF and the TX (Transmit) LED is not blinking amber, perform the following steps until it is on:

a.To view the receive and transmit activity on a group of segments, press the GROUP SELECT button (see Figure 3‐4) to step to the group of interest (Groups 1 through 3). Each time the button is pressed, the GROUP LED lights up in sequence, indicating the selected Group. Receive and transmit activity for that group of segments is then indicated by the RX and TX LEDs for each segment.

b.Verify that cabling is Category 5 UTP with an impedance between 85 and

111 ohms. If the port is to operate at 100 Mbps, Category 5 cabling must be used.

c.Verify that the device at the other end of the twisted pair segment is on and properly connected to the segment.

d.Verify that the RJ45 connectors on the twisted pair segment have the proper pinouts and check the cable for continuity. Typically, a crossover cable is used between hub devices. A straight‐through cable is used to connect between switches or hub devices and an end user (computer). Refer to Figure 3‐5 and Figure 3‐6 for four‐wire RJ45 connections. Refer to Figure 3‐7 and Figure 3‐8 for eight‐wire RJ45 connections.

3-6 Installation

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Contents Enterasys Matrix Page Page Product Safety Federal Communications Commission FCC NoticeIndustry Canada Notice Class a ITE Notice Clase A. Aviso de ITEElectromagnetic Compatibility EMC Compatibilidad Electromágnetica EMCElektro- magnetische Kompatibilität EMC Hazardous SubstancesSupplement to Product Instructions Vcci Notice Bsmi EMC Statement TaiwanSafety Information Class 1 Laser Transceivers Declaration of ConformityEnterasys NETWORKS, INC. Firmware License Agreement Viii Page Page Contents Index TroubleshootingAppendix a Specifications Figures TablesXiv Important Notice PrefaceWho Should Use This Guide For Refer to Structure of This GuideRelated Documents Document Conventions This guide uses the following conventionsGetting Help Support@enterasys.comIntroduction Switch Configuration Using WebView 2G4072-52Connectivity ManagementStandards Compatibility Lanview Diagnostic LEDsSwitch Configuration Using CLI Commands Lanview Diagnostic LEDs Introduction Network Requirements Link Aggregation10BASE-T Network 100BASE-TX Network1000BASE-SX/SX+/LX Network 1000BASE-T NetworkInstallation Unpacking the 2G4072-52Contents of 2G4072-52 Rack MountingAttaching Rack-mount Ears to Enterasys Matrix N SA 2G4072-52 Connecting Power Connecting PowerConnecting to the Network Connecting UTP CablesRX TX Crossover Four-Wire Cable RJ45 Pinouts Eight-Wire Crossover Cable RJ45 Pinouts Connecting Fiber-Optic Cables to Mini-GBICs 2G4072-52 2G4072-52 ÃÄÀ Connecting to the COM Port for Local Management What Is NeededConnecting to an IBM PC or Compatible Device Parameter SettingConnecting to a VT Series Terminal 12 Connecting an IBM PC or CompatibleConnecting to a Modem 13 Connecting a VT Series Terminal14 Connecting to a Modem VT Series Port Adapter Wiring and Signal Diagram RJ45 DB25 Adapter Wiring and Signal AssignmentsCOM Port Adapter Wiring and Signal Diagram RJ45 Modem Port Adapter Wiring and Signal Diagram RJ45 DB25 Completing the InstallationLog-In Using a Console Port Connection Completing the Installation 15 Matrix Startup Screen Example N7 Chassis Viewing the Receive and Transmit Activity TroubleshootingUsing Lanview LED Color State Recommended ActionAlternating 67% on, 33% off Troubleshooting Checklist Refer to the Enterasys Matrix N Standalone SeriesProblem Possible Cause Recommended Action Overview of Shutdown ProcedureTroubleshooting Checklist Recommended Shutdown Procedure Using Reset Button Last Resort Shutdown Procedure Using Reset ButtonSpecifications 2G4072-52 SpecificationsTable A-1 Specifications ItemSpecification 2G4072-52 PortsMini-GBIC Input/Output Specifications Table A-2 Mini-GBIC Input/Output Port SpecificationsProcessors/Memory PhysicalMGBIC-LC03 Specifications 1000BASE-SX Gigabit Ethernet SpecificationsMGBIC-LC01 / MGBIC-MT01 Specifications 1000BASE-SX MGBIC-LC09 Specifications 1000BASE-LX MGBIC-08 Specifications 1000BASE-ELX MGBIC-02 Specifications 1000BASE-TTable A-7 MGBIC-08 Optical Specifications Table A-9 MGBIC-02 SpecificationsTable A-3 COM Port Pin Assignments Signal Name Input/Output COM Port Pinout AssignmentsRegulatory Compliance Table A-4 Compliance Standards Regulatory ComplianceMode Switch Bank Settings and Optional Installations Setting the Mode Switches Required ToolsFigure B-1 Mode Switch Location Memory Locations and Replacement Procedures Location of Dimm and Dram Simm Memory ModulesDimm Replacement Procedure Removing the DimmInstalling the Dimm Figure B-4 Installing the DimmRemoving the Dram Simm Figure B-5 Removing Chassis CoverInstalling the Dram Simm Figure B-6 Dram Simm Connector LocationFigure B-7 Installing the Dram Simm Page Index NumericsPinout assignments console port A-6