NAT/PAT Scenario

Hi all,

Got a NAT scenario thats got me stumped:

Have 3 interfaces:

Ethernet (fa0/0) - internal 10.10.10.0/24 (Inside la nat nat inside)

PPP interface (dialer1) - 20.20.20.1/32 (primary ISP link ip nat outside)

Ethernet (fa0/1) 30.30.30.1/30 (backup ISP link ip nat outside)

So say the routing is simply:

Ip route 0.0.0.0 0.0.0.0 dialer1

Ip route 0.0.0.0 0.0.0.0 fa0/0 30.30.30.2 200

I can do:

ip nat inside source list 101 interface Dialer1 overload

access-list 101 permit ip 10.10.10.0 0.0.0.255 any

but I can't do:

ip nat inside source list 101 interface fa0/1 overload

at the same time.

Is there a way I can configure the PAT so that when the dialer1 interface is
down and the default route is via the Ethernet service it will overload to
that as well?

Cheers,

Evan

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Received on Sun May 24 2009 - 17:48:44 ART