SNMP Authentication Failure

[PolarPanda]

I tried to setup SNMP traps on a testing switch. For some reason, it sent to our radius server first to authenticate (error message: SNMPv2-MIB:authenticationFailure). Maybe I'm not fully understood how snmp works. I though traps should be sent to our network management system directly. Can anyone help and explain to me?

[balaji.bandi]

we are not sure about how you configured your SNMP configuration can you post the configuration to look.

here example guide to setup snmp for reference :

https://www.cisco.com/c/en/us/support/docs/ip/simple-network-management-protocol-snmp/7282-12.html

[PolarPanda]

Here are the commands I used.

snmp-server host xxxx(network management ip address) version 2c string

snmp-server community string RO
snmp-server location xxxxxx
snmp-server contact xxxxxxxx
snmp-server enable traps snmp authentication linkdown linkup coldstart
snmp-server enable traps vtp
snmp-server enable traps entity
snmp-server enable traps config
snmp-server enable traps hsrp
snmp-server enable traps vlan-membership

[balaji.bandi]

If you looking to use this feature - follow the below guide lines. if you setup configuration to report event they normal send traps

snmp-server enable traps snmp authentication linkdown linkup coldstart

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/snmp/command/nm-snmp-cr-book/nm-snmp-cr-s3.html