CRC Errors in AP Radio

[s.kadagathur]

I have noticed numerous CRC errors in AP radio in many access points. I do know CRC errors in wired network where in CRC errors are considered bad and probably resultig from speed mismatch or bad cabling. Thinking that we have done a good site survery and choosing a non overlapping channel and the wireless client says it has excellent connectiivity what could be the reason for the CRC errors. I appreciate if some one could throw some light on this subject.

Thanks.

[RayDMays]

Right from the Manual:

PLCP CRC Errors

The number of times the client adapter started to receive an 802.11 physical layer convergence protocol (PLCP) header but the rest of the packet was ignored due to a cyclic redundancy check (CRC) error in the header.

Note CRC errors can be attributed to packet collisions caused by a dense population of client adapters, overlapping access point coverage on a channel, high multipath conditions due to bounced signals, or the presence of other 2.4-GHz signals from devices such as microwave ovens, wireless handset phones, etc.

MAC CRC Errors

The number of packets that had a valid 802.11 PLCP header but contained a CRC error in the data portion of the packet.

Note CRC errors can be attributed to packet collisions caused by a dense population of client adapters, overlapping access point coverage on a channel, high multipath conditions due to bounced signals, or the presence of other 2.4-GHz signals from devices such as microwave ovens, wireless handset phones, etc.

[s.kadagathur]

Thanks for the note and I appreciate the reference.