RE: snmptrapd and use of load balancers

> From: Marc Zampetti [mailto:[email protected]]
> Sent: Wednesday, September 09, 2009 7:59 AM

> Is snmptrap using information sent within the SNMP PDU, or is it using
> information from the IP transport itself? This is important because the
> load balancer we are using doesn't do packet translation, and as such,
> the TRAPS will be coming to the snmptrapd from the load balancers, at
> least as far as the IP layer knows. Basically, we are not planning on
> using NAT in the load balancer.

	There is no source address information in SNMP notifications.  SNMPv3 notifications do contain the source engineID, which (in principle) uniquely identifies the notification generator.

> Will this work? Is there something I can do to make sure it works?

	Make sure that all your snmptrapd instances use the same engineID, as they are part of the same conceptual engine.  I believe this setup will work, but test early and often.


	HTH,

Mike

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