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New Member

Catalyst 4000 Symbol Erors

Does anyone have a good explanation of what causes a symbol error on an interface? I have a few switches that are getting these errors and can't find a good resource on what could be causing this issue.

Port CrcAlign-Err Dropped-Bad-Pkts Collisions Symbol-Err

Gi1/1 0 0 0 119613615

Thanks

2 REPLIES
Cisco Employee

Re: Catalyst 4000 Symbol Erors

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. show interface counters all stats are updated for a port only when it is linked up. The platform command displays all error stats and counts them even when link is not up.

New Member

Re: Catalyst 4000 Symbol Erors

Thank You !!

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