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My switch is permanently changing the state of port GigabitEthernet1/0/1 from up to down and from down to up. What can I do?

Console Output: enter image description here

Port configuration: enter image description here

Sorry, I have only these pictures. I'm using a Cisco Catalyst 2960-X Series.

RBT
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MitoCode
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2 Answers2

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Start by replacing the cable connected to the port with a new one. If the problem persists, check other hardware components. Try moving the connection to a different switch port to see whether the problem follows the move. If it doesn't, consider the switch port defective. If it does, check the equipment on the other end.

Tilman Schmidt
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I found the problem! My router is a FRITZ!Box 6690 Cable with four LAN ports. One of these is for a 2.5Gbps link that the switch was plugged into.

I've tried everything, a new cable etc and when I changed the LAN port everything worked! I don't know why, but the switch couldn't work properly with that port.

MitoCode
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