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Webcast-Catalyst9k
New Member

Catalyst 2950 disabling port

Hi,

I have a wireless bridge (Proxim Quickbridge 20) connected directly in a catalyst switch 2950 port. Occurs that frequently (one in a week) the port becames disabled with the status: "err-disabled".

The message I could get with show logging is this:

%PM-CLUSTER_MEMBER_1-4-ERR_DISABLE: link-flap error detected on Fa0/12, putting Fa0/12...

What could I do check the cause of the problem ?

Thanks a lot.

2 REPLIES
VIP Purple

Re: Catalyst 2950 disabling port

Hello,

a flapping link can be caused by any of the following:

Speed/duplex mismatch

Faulty cable/loose connector

Faulty NIC or other end station problem

Faulty switch port

Other misconfiguration

If you do not want to manually reenable the port, enable error disable recovery for the link-flap error-disable cause:

Switch(config)# errdisable recovery link-flap

Check this link for additional info:

Troubleshooting Switch Port Problem

http://www.cisco.com/en/US/partner/products/hw/switches/ps700/products_tech_note09186a008015bfd6.shtml

HTH,

Georg

New Member

Re: Catalyst 2950 disabling port

Hi Georg,

Hope this works. I will wait for some weeks to check.

errdisable recovery "cause" link-flap

Thanks a lot.

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