Allied Telesis AT-8000GS/POE, AT-8000GS/24 manual Troubleshooting, Device not operating correctly

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Chapter 5

Troubleshooting

Device not operating correctly

Cannot connect using Telnet, Web browser, or SNMP software

This chapter contains information on how to troubleshoot the switch in the event that a problem occurs.

Note

If you are still unable to resolve the problem after following the instructions in this chapter, contact ATI Technical Support for assistance.

Check the PWR LED on the front of the switch. If the LED is OFF, indicating that the unit is not receiving power, do the following:

Ensure that the power cord is securely connected to the power source and to the AC connector on the back panel of the switch.

Verify that the power outlet has power by connecting another device to it.

Try connecting the unit to another power source.

Try using a different power cord.

Verify that the voltage from the power source is within the required levels for your region.

Verify that the LNK/ACT LED for each port is ON. If a LNK/ACT LED is OFF, do the following:

Verify that the end-node connected to the port is powered ON and is operating properly.

Verify that the twisted pair cable is securely connected to the port on the switch and to the port on the end-node.

Ensure that the twisted pair cable does not exceed 100 meters (328 feet).

Verify that you are using Category 5 twisted pair cable.

Be sure the switch is powered up.

Check network cabling between the management station and the switch.

Check that you have a valid network connection to the switch and that the port you are using has not been disabled.

Be sure you have configured the VLAN interface through which the management station is connected with a valid IP address, subnet mask and default gateway.

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Contents Installation Guide Page Preface Symbol Meaning Description Safety Symbols Used in this DocumentWhere to Find Web-based Guides Contacting Allied Telesis Management Software UpdatesContent Page Chapter Overviewˆ PVE AT-8000GS Switch Series Featuresˆ Ieee 802.3 10Base-T ˆ Ieee 802.3u 100Base-TX Ieee StandardsModel Descriptions ˆ 2 Stacking Ports Two Hdmi connector stacking ports24POE AT-8000GS/24POE Gigabit Ethernet Switch Front PanelAT-8000GS/48 Gigabit Ethernet Switch Front Panel ATI Reference Vendors and Parts Port Descriptions10/100/1000 Base Gigabit Ethernet Ports SFP Port RJ-45 Console PortSystem LEDs LED DefinitionsSYS Stacking Port LEDsIndication LED Indication DescriptionLED LED Description LED Indication Functional Description RJ-45 Port LEDs on AT-8000GS/24 & AT-8000GS/48LED FDX PortLED Link POE RJ-45 Port LEDs AT-8000GS/ 24POEDescription Indication Green Off No link is established on the port Stacking Port LEDs Overview Installation Reviewing Safety Precautions AT-8000GS Series Gigabit Ethernet Switch Installation Guide Please return damaged units for servicing Installation Precautions Preparing for InstallationSite Requirements Unpacking Package ContentsPage Desktop or Shelf Installation Installing the DeviceAttaching the Mounting Brackets AC Power Connection Connecting the DeviceConnecting Switch to a Terminal Stacking Stacking Ring Topology Stacking OverviewStacking Chain Topology Stacking Members Unit ID Removing ReplacingStacking Exchanging Stacking Members Configuring Stacking Page Stacking Initial Configuration Configuration Overview Static IP Address and Subnet Mask ConfigurationIllustrated in the following example Device not operating correctly TroubleshootingCannot connect using Telnet, Web browser, or Snmp software Forgot or lost the password Environmental Specifications Technical SpecificationsPhysical Specifications WeightCable, Port, and Pinout Information Power SpecificationsPower Supply for Non-POE model CertificationsRJ-45 Pin Allocation Pin Connections for the 10/100/1000 Ethernet InterfaceAppendix a Technical Specifications

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