help : NAT on multiple interfaces

[Astor99]

Hi,
my problem is this :
I have a router with 1 Serial,1 Bri and 1 eth.
Lan is private and connected to ETH.
Bri is used for backup and Serial is for Internet connection.NAT is working between ETH towards Serial.

When serial is down, Bri comes up : I would like that
nat stops to work on serial and starts on bri0.

I tryed to put 2 lines like this ones but it doesn't work :
ip nat inside source list 101 interf Serial1 overload
ip nat inside source list 101 interf Bri0 overload

I think that Cisco routers cannot do that...
Any help is appreciated !!!
Thanks,
Marcello

 

[jeter]

1.on the bri lets try( ip nat outside) and on the ethernet put (ip nat inside) .

2.the statement above goes like this ( ip nat inside source list {<AL Number><AL name>}interface<interface> This causes the router to replace the inside local ip
address with the single ip address configured on the corresponding interface.
There are a few options we can try here, let us know how it goes. Good Luck !!!

 

[Astor99]

Thaks, but that is what I did. I forgot to tell you that
I put &quot;ip nat inside&quot; in eth0 and &quot;ip nat outside&quot; in Serial and Bri0, of course. The problem is not that NAT
works between ETH to Serial.
The BIG problem is that :
If serials goes down, then Bri0 comes up, but NAT still
*works* on serial. Try it!
Thanks anyway