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multiple vips with different DFGW's

I searched and didn't find anything related to this (not even close).

I have several nodes (firewalls) that use different default gateways on my LTM.  I am planning on transitioning from one set of nodes to another, during this time i need BOTH VIPS available.  That said, configuring different routes on my firewall is not feasible (100's of different subnets, would take forever)  How do i go about sending traffic from one VIP with its own default gateway to another VIP on a different default gateway?

What i currently have setup on my LTM:

192.168.1.1 (VIP) utilizing pool with members 10.1.1.1 and 10.1.1.2

192.168.2.1%1 (VIP) utilizing pool with members 10.1.2.1%1 and 10.1.2.2%1

How to i get 192.168.1.1 to utilize 192.168.2.1%1 as a node so that i can utilize both VIPS at the same time?  Or am i even going about this the right way??

Thanks for your help
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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER
Traffic inbound from the Gateways to the VS's?

It's automatic (By default), as long as auto-lasthop is enabled, then the traffic TO a VS will return via the exact same interface and gateway (Detected by src MAC on the packet that is used to initialise the connection table entry).

H
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Hamish is dead on the money (as usual). This should Just Work for you.
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Perfect!!!!

Thank you

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