[SNMP4J] No snmp response from a server with multiple NICs and IP addresses

Pradipmaya Maharana pradipmaya at gmail.com
Mon Nov 30 20:32:00 CET 2015


Our server has multiple NICs (and hence multiple IPs). We present user with
a management IP to support high availability, just in case one of the NIC
goes down.
So, lets say the NIC ips are: 10.10.10.11 (primary) and 10.10.10.22
(secondary) and the management IP is 10.10.10.55.

When the user sends SNMP GET request to the management IP, 10.10.10.55, the
request goes to the primary NIC, and so the response is returned from the
10.10.10.11.
Which is fine most of the time, but in some cases, as the response IP is
different from the request IP, the management software (NMS), which made
the GET request, fails the operation saying "no response".

Basically the NMS does get a response but as the response ip is different,
NMS ignores it and fails the operation.

How can this be resolved?



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