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Community Member

4500 Duplex mismatch error?

We have a 4507 w/SUP IV IOS 12.2(31)SG and noticed that one of our Linux servers that was connected to an ether-channel was showing 100/half on the server side and on the switch side it showed 100/full but there was no duplex mismatch error that was being logged. We have our logging level set to debugging. So my question is why we would not receive an error log for this duplex mismatch? Thx!

9 REPLIES

Re: 4500 Duplex mismatch error?

Hi

Have u configured the traps.

Thanks

Mahmood

Community Member

Re: 4500 Duplex mismatch error?

Thx Mahmood, we just wanted to have it logged to the buffer. Do we need an snmp trap for the buffer log as well???

Community Member

Re: 4500 Duplex mismatch error?

(config)#logging buffered

in global configuration

Petr?nio

Community Member

Re: 4500 Duplex mismatch error?

Thx B, we already have all logging levels set to dubugging (buffered, monitor, console, trap etc) but still no duplex mismatch errors?

Community Member

Re: 4500 Duplex mismatch error?

The interface on the switch is incrementing errors ?

Paste for us the show interface Port-Channel N?.

If u do a show logging, what it appears ?

Petr?nio

Community Member

Re: 4500 Duplex mismatch error?

We changed the server side to a 100/full but prior to the change we did not receive duplex mismatch errors here is a snapshot of the interface.

Purple

Re: 4500 Duplex mismatch error?

I may be wrong but I think those errors are normally a function of cdp indicating this problem across a link to another cisco device , if the device does not run cdp it will not put an error in the log , you would have to see it yourself thru interface errors or slow response times and make the adjustment. I have never seen this error on a user device port only across cisco device uplinks...

Community Member

Re: 4500 Duplex mismatch error?

Did the errors increment after match the duplex ?

Cisco Employee

Re: 4500 Duplex mismatch error?

Hi,

In order to log the interface errors on the Cat4500 with IOS you have to enable logging on global basis or per interface basis.

Conf t

looging event link-status

Please ue the link below for command refrence

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/12_2_31s/cmdref/int_sess.htm#wp2089249

HTH,Please rate if it does.

-amit singh

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