NAT with BGP urgent help



The scenario is that i have a router which will work as a CPE will run BGP with the PE. Suppose teh WAN interface IP is

My ethernet IP is and its connected to a firewall I have three networks behind firewall, and

All the networks which are behind the firewall shd get NAT/PAT to single ip address and i shd only advertise in BGP.

Here are my config

Interface Gig0/0 (LAN side)

ip nat insdie

interface Gig0/1 (WAN side)

ip nat outside


since is not in the routing table i would advertise a static route to null0

ip route null0


static routes for all three networks

ip route

ip route

ip route


NAT configuration

access-list 1 permit

access-list 1 permit

access-list 1 permit


ip nat pool mypool netmask (shd i use /32 as i have been given /32)


ip nat inside source list 1 pool mypool overload


BGP config

router bgp 6500

network mask


Guys kindly help me out...will it work or i am missing something??


Thanks as always


  • peetypeety ✭✭✭

    Go back to square 1 and troubleshoot this issue.

    C'mon now, you're posting in a CCIE forum looking for "urgent" help, but you're not even displaying a CCNP-level attempt at the problem. Show us your topology, show us your debugs, give us a hint as to where you THINK the problem is, tell us the platform and code version, etc.

  • Oh the topolog y is as under:


    CPR router (which will do NAT) and its connected to a firewall which have those three IP subnets. The CPE will run bgp and will do the NAT.


    Is this clear now?

Sign In or Register to comment.