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New Member

3560 Unexplained err-disabled ports

I have an issue where switchports configured for port security and mac-address sticky are going err-disabled for no apparent reason. They are not being replaced. They have not been moved. They were working fine for weeks. I can tell you that it started happening the next morning after the clear port security all was issued on the switch. Anyone seen this before? I am running 12.2(25)SED1. Also, we are running a voice vlan on the switchports.

3 REPLIES
Silver

Re: 3560 Unexplained err-disabled ports

Please check below link it desribe the casuse and solution (shut/no shut) :

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b.shtml

Hope this helps.

New Member

Re: 3560 Unexplained err-disabled ports

Did you read the error message in log (show log)? Some NIC's (esp. Marvell) are generating more source MAC Addresses than reasonable.

Regards,

Tom

New Member

Re: 3560 Unexplained err-disabled ports

So far, it has been 4 WYSE terminals and one HP Laserjet printer yesterday and one WYSE terminal today. I checked the logs and it is the same mac address. Next time it happens, I am breaking out my CSI hat.

Thank you for your responses

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