One one of my routers, i get the below log error.
Aug 21 19:55:40.053 CHN: %SNMP-3-AUTHFAIL: Authentication failure for SNMP req from host A.B.C.D
Aug 21 20:00:56.987 CHN: %SNMP-3-AUTHFAIL: Authentication failure for SNMP req from host A.B.C.D
The SNMP config is as below.
snmp-server community XXXXXXXXXXXXXXX RO 80
snmp-server community XXXXXXXXXXXXXXXX RW 81
snmp-server trap-source Loopback10
snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart
snmp-server enable traps config
snmp-server enable traps bgp
snmp-server enable traps syslog
snmp-server host A.B.C.D XXXXXXXXXXXXXXXXxx snmp
I have verified that the SNMP strings configured on our Cisco works is fine. Also the backup for this device is success every week. Not sure why i still receive this error. Your assistance is highly appreciated.