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New Member

Symbol-Err message

Hi all,

Analyzing error counters on Catalyst 4510 IOS 12.2(18) :

show interfaces counters error

We've found big value in Symbol-Err colum (for Gb trunking interfaces).

It seems difficult to find document to explain signification of this

particular counter !

Does somebody know ?

ThX a lot

2 REPLIES
Cisco Employee

Re: Symbol-Err message

Symbol-Err: These errors are seen when the Mac sees "invalid" symbols. In most cases, this is a physical problem - Gbics, fiber, etc. These errors also increment when the link is not up because the Mac isn't syncronized and receives noise.

Hall of Fame Super Silver

Re: Symbol-Err message

I believe that Prashanth is on exactly the right path. I have bumped into these errors several times. And every time it turned out to be a physical layer problem. My advice is to check very carefully on your physical layer links.

HTH

Rick

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