<Catalyst 6509 log message>"Aug 29 11:04:54: %SNMP-3-AUTHFAIL: Authentication failure for SNMP req from host 10.168.82.205Aug 29 11:20:50: %SNMP-3-AUTHFAIL: Authentication failure for SNMP req from host 10.168.72.82Aug 29 11:30:25: %SNMP-3-AUTHFAIL: ...