Nat with two outsise interfaces

[gpetrom]

Hi everyone

I have a 876 cisco router and i have two adsl connections. how must i configure nat?

I tried to use the same source list in both interfaces and it does not let me. It overights the other statement
For example

ip nat inside source list 1 interface dialer 0 overload
ip nat inside source list 1 interface dialer 1 overload

What am i doing wrong?
Any ideas

Thank you all in advanced
Sorry if my english are bad

 

[Jimtron26]

Hi gpetrom

Are your external address contiguous? ie 1.1.1.1, 1.1.1.2 etc

If so then you could use a NAT pool of external addresses to map to instead of a specific interface

syntax
#ip nat pool <pool name> <start ip> <end ip> <netmask|prefix-length>

#ip nat inside source list <ACL number> pool <pool name> overload

The overload statement forces PAT which will allow many inside addresses to access the Internet using limited outside addresses

Hope this helps

Jim )
CCNA

 

[gpetrom]

Hi Jimtron26

Thanks for replying no i have dynamic ip address from my provider i don t have the problem with the inside address
the problem is with the outside how can i tell nat to use two outside interfaces

Thanks all in advanced