NAT'ing Multiple WIC's on a 2811 router

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Dec 3rd, 2007
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I am trying to set up 2 outside interfaces on my router so that I can route a specific traffic thru one ISP, and all the other traffic thru another ISP. The first WAN interface is the normal FE0/1, but the second WAN interface is a 4 port EtherSitch High speed card (HWIC). Since I can't set a public IP on the individual ports of this HWIC, I have to assign it to the VLAN that hosts these 4 ports. My question is this...How do I NAT this VLAN as an outside interface when I'm already using FE0/1 as the defualt route? Or, is this even possible. I have 1 LAN port that I'm looking to route normal Internet traffic thru FE0/1, and route the traffic to our imaging server in Houston thru the VLAN, which I've set up as the outside interface. Is this even possible?

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Jon Marshall Mon, 12/03/2007 - 14:55
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You could try with policy routing. Assuming your default-route will push traffic out the fe0/1 interface

imaging server =

vlan interface = 10

access-list 101 permit ip any host

route-map PNAT permit 10

match ip address 101

set interface vlan10

Then configure "ip nat outside" on both the fe0/1 and the vlan 10 interface.




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