snmp auth errors

[awilson3rd]

I am getting the following error reported by syslog on CW2k but the source address is the management station:

%SNMP-3-AUTHFAIL: Authentication failure for SNMP req from host x.x.x.x

The management station (CW2k) has no problems managing the device so I cant understand why the 6509 is complaining??

[8sdulaney]

Go to this web page. www.cisco.com/cgi-bin/Support/Errordecoder/home.pl

[awilson3rd]

this happens on a couple of 6509's it takes a couple of snmp attemtps and then is accepted from CW2k???

[rmushtaq]

It's an Authentication Failure trap. Likely causes could be:

1) Host trying SNMP get/set using wrong community

2) Host trying to SNMP get/set using a community for which ACL is configured that forbids access.