Cabletron Systems 2H253-25R manual Troubleshooting, Using Lanview

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4

Troubleshooting

This chapter provides information concerning the following:

•Using LANVIEW (Section 4.1)

•Troubleshooting Checklist (Section 4.2)

•Using the RESET Button (Section 4.3)

4.1USING LANVIEW

The 2H253-25R uses Cabletron Systems’ built-in visual diagnostic and status monitoring system called LANVIEW. The LANVIEW LEDs (Figure 4-1) allow quick observation of the network status to aid in diagnosing network problems.

A

LED Receive (RX)

MODE

RX-TX

DPX-SPD

Transmit (TX)

B

LED

MODE

RX-TX

DPX-SPD

Full Duplex Status

Speed Status

	FAST ETHERNET WORKGROUP SWITCH
	LED	2	4	6	8	10	12	14	16	18	20	22	24
	MODE	1	3	5	7	9	11	13	15	17	19	21	23
	RX-TX	1	3	5	7	9	11	13	15	17	19	21	23
	RX-TX

DPX-SPD



				PWR
2H253-25R		RESET		CPU
2H253-25R			COM
			COM
			PWR	CPU
A	LED functions when LED MODE switch is in the RX-TX position. This is the
A	default switch setting.

B LED functions when LED MODE switch is in the DPX-SPD position.

2762-09

Figure 4-1 LANVIEW LEDs

Troubleshooting 4-1

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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