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Webcast-Catalyst9k
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Ports going up and down repeatedly

We have certain fiber ports that are going down and up repeatedly for certrain amount of time before they get back to normal. This process is ocuuring once each week or month. Is this GBIC problem? cable problem? switch port problem?

The following are samples of the error messages in the switch:

Jun 2 04:23:57: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/7, changed state to down

Jun 2 04:24:00: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/7, changed state to up

Jun 2 05:19:30: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/7, changed state to down

Jun 2 05:19:33: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/7, changed state to up

Jun 2 05:59:29: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/7, changed state to down

Jun 2 05:59:32: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/7, changed state to up

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1 REPLY
New Member

Re: Ports going up and down repeatedly

Dear Batoougmaa

I have the same problem but this is in my Serial ports .

I think this is due to the cable that u r using . try to change the cables .

regards

sanju

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