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New Member

backup interface nat translation automation

i am having a 2651..

original setup was using 2 ethernet with nat overload on the f0/1..now we installed addtional isdn interface for backup purposes..the shifting between interfaces (f0/1 and bri0/0) was okay but the nat seems giving me a problem..ive iolated the problem by doing the following;

1 disable the original nat overload

2 invoking the bri0/0 overload

after this process, only it will work.

what i wanted is fully automated...such that when the bri becomes active, it shoud use the bri0 overload, and when it gets bak to f0/1, it should be able to go back to its original nat overload.

ty

  • Other Network Infrastructure Subjects
2 REPLIES
Bronze

Re: backup interface nat translation automation

You can configure your NAT to match the ip address and outgoing interface to make this work:

For example:

ip nat inside source route-map ethernet interface f0/1 overload

ip nat inside source route-map isdn interface bri0/0 overload

!

route-map ethernet

match ip address 1

match interface f0/1

!

route-map isdn

match ip address 1

match interface bri0/0

!

access-list 1 permit 10.0.0.0 0.0.0.255

New Member

Re: backup interface nat translation automation

hi,

thanks a lot..i really appreciate it...it works..

again, my many thanks.

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