Cabletron Systems 2H253-25R manual Network Requirements, 10BASE-T Network

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Network Requirements

Before installing the 2H253-25R, review the requirements and specifications referred to in this chapter concerning the following:

SmartTrunk (Section 2.1)

10BASE-T Twisted Pair Network (Section 2.2)

100BASE-TX Twisted Pair Network (Section 2.3)

The network installation must meet the requirements to ensure satisfactory performance of this equipment. Failure to do so will produce poor network performance.

NOTE

The Cabletron Systems SmartTrunk User’s Guide and Cabling Guide referred to in the following sections can be found on the Cabletron Systems World Wide Web site: http://www.cabletron.com/

2.1SmartTrunk

To connect the 2H253-25R to a network so it can take advantage of the SmartTrunk feature, there are certain rules concerning port connections and configurations that must be followed for proper operation. Refer to the Cabletron Systems SmartTrunk User’s Guide for additional information.

2.210BASE-T NETWORK

When connecting a 10BASE-T segment to any of the 2H253-25R ports (1 through 24), ensure that the network meets the Ethernet network requirements of the IEEE 802.3 standard for 10BASE-T. The ports support Category 3 UTP cabling when connected to a 10BASE-T segment. Refer to the Cabletron Systems Cabling Guide for details.

NOTE

If a port is to operate at 10 and 100 Mbps, Category 5 cabling must be used. Refer to Section 2.3 for information about 100BASE-TX networks and cabling.

Network Requirements

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Contents 2H253-25R SmartSwitch Installation User’s Guide Page Page FCC Notice Cabletron SYSTEMS, INC Program License Agreement Page Page Page Cabletron Systems Limited Program License Agreement Viii Declaration of Conformity Page Contents Troubleshooting Figures Tables Structure of this Guide Using this GuideAbout This Guide Xvi Related DocumentsDocument Conventions Document ConventionsPage Overview IntroductionAuto-Negotiation ConnectivitySmartTrunk Full Duplex Switched EthernetRuntime IP Address Discovery Port/VLAN Redirect Functions Remote Monitoring RmonBroadcast Suppression Flow Control Rate LimitingSwitching Options Garp Switch Operation12 802.1 Port Priority ManagementOptional HSIMs and VHSIMs Lanview Diagnostic LEDsStandards Compatibility Year 2000 CompliantGetting Help 10BASE-T Network Network Requirements100BASE-TX Network Unpacking the Device InstallationInstalling the Device Installing OptionsGuidelines for Tabletop and Shelf Installations Tabletop or Shelf InstallationGuidelines for the Rackmount Installation Rackmount InstallationAttaching the Strain-Relief Bracket Rack Mounting the 2H253-25R Redundant Primary AC outlets are On separate circuits Connecting PowerConnecting to the Network Straight Cable Connection Completing the Installation Using Lanview TroubleshootingPWR CPU FDX OFF Troubleshooting ChecklistSeries 2E253, 2H252, 2H253, User parameters Position of Mode switch IP address Reset Button Using the Reset ButtonPhysical Properties Device SpecificationsSpecifications INPUT/OUTPUT Ports Electrical SpecificationsEnvironmental Requirements Regulatory Compliance COM Port Pinout AssignmentsPage Required Tools Optional Installations Mode Switch Bank SettingsRemoving the Chassis Cover Removing the Chassis Cover Figure B-1 Removing the Chassis Cover Switch 6 Forced BootP Setting the Mode SwitchesSimm Upgrade Locating SIMMs Installing the Dram SimmFigure B-4 Installing the Dram Figure B-5 Hsim and Vhsim Connector Locations Installing Optional Hsim or Vhsim Interface ModulesPage Numerics IndexIndex-2