Cisco Switch Hardware Catalyst 2960X-48TS-L

Verify link status on both sides

If the port LED does not turn on

Connect the cable from the switch to a known good device

Ensure both ends of the cable are connected to the correct ports

Verify that both devices have power

Verify the correct cable type is used

Check for loose connections and reseat the cable if necessary

Describe any issues encountered during the check

Examine the cable for marginal damage or failure.

Check for subtle damage to the wiring or connectors.

Exchange the cable with a known good cable.

Try the cable in another port to see if the problem follows the cable.

Inspect cable connectors for issues

Inspect stack cable and stack port for bent pins or damaged connectors.

Use the show interfaces command to check port status

Is the port error-disabled, disabled, or shut down?

Re-enable the port if necessary

Verify the status of all PoE ports

Use the show interfaces command to check PoE port status

Get a replacement switch with the same model number as the failed switch.

Ensure the replacement switch is off and the FlexStack module is installed.

Connect the replacement switch to the stack.

Make the same connections on the replacement switch that were on the failed switch.

Reinstall any modules and make cable connections.

Power on the replacement switch.

Inspect the network module and SFP module

Verify that the module is supported on this platform

Use the show interfaces privileged EXEC command to check port or module status

Ensure all fiber connections are clean and securely connected