NAT on loopback

[The_guroo_2]

Gents my scenario is as under:

We have to install a router cisco 2900 at customer end. It will run BGP with the PE (as 2900 will act a sa CE). The router Ethernet will be connected to customer firewall (they have given us /30 address pool to use).

The traffic will come to our datacentre. I want that all traffic originates from customer site get NAT/PAT to a single address. Suppose i have chose to use 10.1.1.1 address. so at the customer end do i have to make a loopback of that IP address and then advertise into BGP? (i want to do at source NAT)

Do i have to ask the customer to tell me there networks (as i have to chose which to NAT). Can someone plz guide me or tell me set of commands

Thanks

[Mohit Sahai]

Hello,

NAT works only on the traffic and not on the BGP routes.

To advertise the NATed routes in to the BGP, configure a static route towards null 0 and advertise it to the BGP using network command

I have somewhat understood your requirement 

Could you please provide a simple topology diagram so that I may assist you.

Thanks,

Mohit