3 ISP + fwsm = 3 default gateways???

Unanswered Question
Jan 21st, 2009

I am wondering if it is possible to have 3 virtual external interfaces for 3 ISPs and configure 3 static PAT statements for one server on an internal vlan. The 3 default gateways are the 3 routers connected to the ISPs. Is there a way to get the fwsm 2.3(4) to allow this server to utilize all 3 static PAT statements? If so will it use round robbin or some other way to balance the load?

I have this problem too.
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ebreniz Thu, 01/29/2009 - 15:46

On PIX/FWSM, it does not perform the load balance 1:1. In fact, it uses quite complex

algorithm to load balance (not only based on destination), and if you pass enough

different source and destination traffic, the load balance will kick-in with 50:50 load

balance across 2 default gateways.

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