Enterasys Networks 4G4205-72, 4G4285-49 C

Enterasys Matrix DFE-Gold Series PoE Module Hardware Installation Guide C-1

C

About PoE (Power over Ethernet)

ThisappendixprovidesanoverviewofPoweroverEthernetTechnologyandhowitis

implementedinrelationtothe4G4285‐49and4G4205‐72DFEmodules.

Overview

PoweroverEthernet(PoE)referstotheabilitytoprovideoperationalpowerthroughthe

sameEthernetcablingtoaPD(powereddevice)connectedtoadatanetwork.Modern

Ethernetimplementationsemploydifferentialsignalsovertwistedpaircables.This

requiresaminimumoftwotwistedpairsforasinglephysicallink.Bothendsofthecable

areisolatedwithtransformersblockinganyDCorcommonmodevoltageonthesignal

pair.PoEexploitsthisfactbyusingtwotwistedpairsasthetwoconductorstosupplya

directcurrent.Onepaircarriesthepowersupplycurrentandtheotherpairprovidesa

pathforthereturncurrent.WhileseveralproprietarylegacyimplementationsofPoE

havebeendeployedbyLANequipmentvendors,in2003theIEEEpublishedtheIEEE

802.3af‐2003specification,whichispartofthe802.3suiteofstandards.

The4G4285‐49and4G4205‐72arefullycompliantwiththeIEEE802.3afstandard.They

supportthestandardresistorbaseddetectionmethod,aswellasACdisconnectcapability.

The4G4285‐49and4G4205‐72arealsocapableofsupplyingthemaximumspecified

currenttoallportssimultaneously.

EachPDhasaPDC(PoweredDeviceClassification)thatistransmittedtotheDFEmodule

forpowermanagementpurposes.Table C ‐1liststheclassificationsandtheassociated

powerranges.

Table C-1 Powered Device Classifications

Class Usage PD Maximum Power Range Usage

0 Default 0.44 to 12.95 Watts

1 Optional 0.44 to 3.84 Watts

2 Optional 3.84 to 6.49 Watts

3 Optional 6.49 to 12.95 Watts

4 Not Allowed Reserved for Future Use

Contents

Main Page Notice Regulatory Compliance Information Page Supplement to Product Instructions 50 Page Safety Information Class 1 Laser Transceivers Declaration of Conformity ENTERASYS NETWORKS, INC. FIRMWARE LICENSE AGREEMENT BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT, CAREFULLY READ THIS LICENSE AGREEMENT. Page Page Page Contents About This Guide Chapter 1: Introduction Chapter 2: Network Requirements Chapter 3: Installation Chapter 4: Troubleshooting Appendix A: Specifications Appendix B: Mode Switch Settings and Option Installations Appendix C: About PoE (Power over Ethernet) Index Figures Tables About This Guide Who Should Use This Guide How to Use This Guide Related Documents Conventions Used in This Guide Thefollowingconventionsareusedinthisguide: Getting Help Introduction Overview of DFE-Gold Series PoE Module Capabilities DFE Modules 4G4285-49 Page 4G4205-72 Figure 1-2 4G4205-72 DFE-Gold Module Network Expansion Module (NEM) Option Connectivity 4G4285-49 4G4205-72 Management Secure Networks Policy Support Standards Compatibility Page Page Network Requirements Link Aggregation Module Placement in a Matrix E7 Chassis FTM Bridge Function and Optional NEM 10BASE-T Network 100BASE-TX Network 1000BASE-T Network Page Installation Installation Site Requirement Unpacking the DFE Module Installing Optional Network Expansion Modules DFE Module Placement and Installation Rules A DCB Example 1 (Figure 3-1, A) Example 2 (Figure 3-1, B) Example 3 (Figure 3-1, C) Example 4 (Figure 3-1, D) Installing the DFE Module into a Chassis Preparation Installing Module into Matrix E7 or N7 Chassis Preparing to Install Module into Matrix E7 or N7 Chassis Installing the DFE Modules into a Matrix E7 or N7 Chassis Page Preparing to Install Module into MatrixE7 or N7 C hassis 3-10 Installation Figure 3-2 Installing Module into MatrixE7 or Matrix N7 Chassis (E7 shown) DFE Installing the DFE Modules into Matrix N3 or Matrix N5 Chassis Page Connecting 48 Vdc Power for PoE Operation Connecting to the Network Connecting UTP Cables to DFE Modules Connecting to the Network Enterasys Matrix DFE-Gold Series PoE Module Hardware Installation Guide 3-15 7G4285-49 Page Page Page Verifying PoE Port Status Connecting to COM Port for Local Management What Is Needed Connecting to an IBM PC or Compatible Device Connecting to a VT Series Terminal Connecting to a Modem Connecting to COM Port for Local Management Adapter Wiring and Signal Assignments 3-24 Installation Figure 3-11 Connecting to a Modem RJ45 Connector (Female) 4G4285-49 VT Series Port Adapter Wiring and Signal Diagram RJ45 DB25 Modem Port Adapter Wiring and Signal Diagram Completing the Installation Completing the Installation of a New System First-Time Log-In Using a Console Port Connection Page Completing the Installation of a DFE Module in an Existing System Logging in with an Administratively-Configured User Account Troubleshooting Using LANVIEW About the Management (MGMT) LED Viewing Receive/Transmit Activity on 4G4285-49 Viewing Receive/Transmit Activity on 4G4205-72 DFE Viewing the PoE Port Status RX/TX Indications in Standard Mode RX/TX LED Indications in PoE Port Status Mode Page Troubleshooting Checklist Table 4-2 Troubleshooting Checklist (continued) Problem Possible Cause Recommended Action Overview of DFE Module Shutdown Procedure Overview of DFE Module Shutdown Procedure Enterasys Matrix DFE-Gold Series PoE Module Hardware Installation Guide 4-11 Figure 4-3 OFFLINE/RESET Switch 4G4285-49 Recommended Shutdown Procedure Using OFFLINE/RESET Switch COM OFFLINE / RESET CPU MGMT GROUP 1 GROUP 2 GROUP 3 1X CPU POE 1X Last Resort Shutdown Procedure Using OFFLINE/RESET Switch A Specifications DFE Module Specifications Table A-2 4G4205-72Specifications Item Specification Processors/Memory Physical Environmental COM Port Pinout Assignments Regulatory Compliance B Mode Switch Settings and Option Installations Required Tools Setting the Mode Switches Memory Locations and Replacement Procedures Page Gaining Access to Memory Modules Removing the Safety Cover Page DRAM SIMM Replacement Procedure Removing the Network Expansion Module (NEM) Page Removing the DRAM SIMM Installing the DRAM SIMM DIMM Replacement Procedure Installing the DIMM Installing the Network Expansion Module (NEM) Page Reinstalling the Safety Cover Page Page C About PoE (Power over Ethernet) Overview Proprietary PD Detection Power Interface Matrix N5 Backplane 48 Vdc Interface Front Panel 48 Vdc Interface PoE Port Status LEDs Page Index Numerics C D E N O P R S