0 Replies Latest reply on Jul 1, 2016 3:34 PM by ironclad757

    Trap Authentication Errors From  Sourced from the Nodes second IP

    ironclad757

      Hi, I receive the SNMPv2-MIB:authenticationFailure trap messages for Cisco switches.  I've noticed it occurs more on the devices with more than one /30 IP address used for point to point connections. 

       

      For instance, the switch IPs in the Node Details lists are:

      172.27.42.1 (polling IP)

      172.27.255.14

      172.27.255.17

      172.27.42.129

      172.27.42.193

       

      The trap authenticationFailure arrives from 172.27.255.17.  While receiving true trap messages for the device works.

      Wireshark shows the correct Community Strings being passed. 

       

      Cisco config snippet

       

      logging trap warnings

      logging facility local1

      logging source-interface Vlan340

      logging host 10.10.254.10

      snmp-server trap-source Vlan340

      snmp-server host 192.168.101.22 informs version 2c Creek

       

      If I place the device in unmanaged state the trap message authentication **** stops.

       

      Thank you kindly for any helpful feedback!