Enterasys Networks 2H252-25R manual Optional Installations and Mode Switch Bank Settings B-3

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Removing the Chassis Cover

To remove the chassis cover, proceed as follows:

1.Disconnect the 2H252-25R from the network as follows: a. Unplug both power cords from the rear of the chassis.

ELECTRICAL HAZARD: TURN OFF THE 2H252-25R BY UNPLUGGING THE POWER CORD FROM THE REAR OF THE CHASSIS.

AM HINTEN DES 2H252-25R STECHEI ABZIEHEN UM AUS ZU SCHALTEN.

APAGUE EL 2H252-25R DESENCHUFE EL CABLE DE LA UNIDAD.

TIP: Before performing step b, mark the cables connected to the 2H252-25R according to their associated port numbers. This is recommended for ease of reinstallation.

b. Disconnect all network cables attached to the 2H252-25R.

2.If the 2H252-25R is rack mounted, remove it from the rack and remove the rackmount brackets (refer to Chapter 3, Installation).

Optional Installations and Mode Switch Bank Settings B-3

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Contents 2H252-25R SmartSwitch Installation User’s Guide Page Page Class a ITE Notice FCC NoticeIndustry Canada Notice Vcci NoticeEnterasys NETWORKS, INC Program License Agreement Page Declaration of Conformity Page Contents Troubleshooting Figures Tables About This Guide Using this GuideStructure of this Guide Related Documents Guide uses the following conventions Document ConventionsPage Overview IntroductionRuntime IP Address Discovery ConnectivitySmartTrunk Full Duplex Switched EthernetRate Limiting Remote Monitoring RmonBroadcast Suppression Port/VLAN Redirect FunctionsFlow Control Garp Switch OperationOptional HSIMs and VHSIMs Switching Options11 802.1 Port Priority ManagementStandards Compatibility Lanview Diagnostic LEDsYear 2000 Compliant Your email address Getting Help10BASE-T Network Network Requirements100BASE-TX Network Unpacking the Device InstallationInstalling Options Installation Installing the DeviceTabletop or Shelf Installation Guidelines for Tabletop and Shelf InstallationsGuidelines for the Rackmount Installation Rackmount InstallationAttaching the Strain-Relief Bracket Strain-Relief Bracket Screws Rack Mounting the 2H252-25RRackmount Bracket Screws Redundant Primary AC outlets are On separate circuits Connecting PowerConnecting Twisted Pair Cables to Fixed Ports Connecting to the NetworkConnecting the Twisted Pair Segment Straight-Through Cable Completing the Installation Using Lanview TroubleshootingLanview LEDs PWR CPU FDX Local Management User’s Guide Troubleshooting Checklist2E253, 2H252, 2H253 SmartSwitch Series 2E253 Reset Button Using the Reset ButtonPage Device Specifications SpecificationsPhysical Properties Environmental Requirements Electrical SpecificationsINPUT/OUTPUT Ports Regulatory Compliance COM Port Pinout AssignmentsPage Required Tools Optional Installations Mode Switch Bank SettingsRemoving the Chassis Cover Optional Installations and Mode Switch Bank Settings B-3 Screws Chassis Cover Front Panel Figure B-2 Mode Switch Location Setting the Mode Switches6Optional Installations and Mode Switch Bank Settings Locating SIMMs Simm UpgradeInstalling the Dram Simm Figure B-5 Hsim and Vhsim Connector Locations Installing Optional Hsim or Vhsim Interface ModulesPage Numerics IndexIndex-2