Sonicwall with failover, multiple subnets, and preferred WAN interface per subnet

Posted by Dan on Server Fault See other posts from Server Fault or by Dan
Published on 2012-09-05T00:05:12Z Indexed on 2012/09/05 3:40 UTC
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I am trying to set up my Sonicwall TZ-210 as follows:

  1. Two WAN interfaces (different ISPs), set up in failover mode.
  2. Two LAN interfaces with different subnets
  3. Each LAN subnet will have a preferred outbound WAN interface, but would failover when necessary.

In this way, each ISP is being used for a separate subnet of my network, but both subnets could failover to the other ISP if their primary went down.

I know how to do 1 and 2, but I don't know how to do 3. I could set up a route for each subnet to go through a specific interface, but what would happen in the event of a failover? Would it automatically update those routes?

Thanks!

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