NAT Overload

Question-
I have one router, two ISPs with BGP(Gi0/0 and Gi6/0).  I have one NAT Overload pointing to one WAN interface.  
--------------------------------
ip nat inside source route-map no-vpn-nat interface GigabitEthernet0/0 overload

route-map no-vpn-nat permit 10
 match ip address 180

access-list 180 deny   ip 10.100.0.0 0.0.255.255 10.0.0.0 0.255.255.255
access-list 180 deny   ip 10.100.0.0 0.0.255.255 172.16.0.0 0.15.255.255
access-list 180 deny   ip 10.100.0.0 0.0.255.255 192.168.0.0 0.0.255.255
access-list 180 permit ip 10.100.0.0 0.0.255.255 any
--------------------------------
Can I add another WAN interface?  

was thinking I could add this..

ip nat inside source route-map no-vpn-nat interface GigabitEthernet6/0 overload
but the IOS wont allow that.

Thanks
800LMAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

atechnicnateCommented:
I've never personally done this so your question got me intrigued.  I found a doc that looks like using route-maps is really your best bet.  Just change the config to an overload setup...

(Credit where it's due) Reference:
https://supportforums.cisco.com/docs/DOC-3987

interface Ethernet0
 ip address 10.1.1.1 255.0.0.0
 ip nat inside
!--This connects to the Corporate network, designated as the NAT inside interface.  
interface Serial0
 ip address 192.168.1.1 255.255.255.252
 ip nat outside
!---This connects to the Internet through ISP-1, designated as the NAT outside interface.  
 
interface Serial1
 ip address 172.16.1.1 255.255.255.252
 ip nat outside
!---This connects to the Internet through ISP-2, designated as the NAT outside interface.  

ip nat pool ISP-1 192.168.1.3 192.168.1.254 prefix-length 24
!---This creates a pool by the name ISP-1, which contains addresses assigned by ISP-1.  

ip nat pool ISP-2 172.16.1.3 172.16.1.254 prefix-length 24
!---This creates a pool by the name ISP-2, which contains addresses assigned by ISP-2.  

ip nat inside source route-map isp-1 pool ISP-1
!---The above line configures Dynamic NAT mapping for the inside network
10.0.0.0/8 to a global address from the pool ISP-1 to be used for traffic matched by the route-map isp-1.  

ip nat inside source route-map isp-2 pool ISP-2
!---The above line configures Dynamic NAT mapping for the inside network
10.0.0.0/8 to a global address from the pool ISP-2 to be used for traffic matched by the route-map isp-2.  

access-list 1 permit 10.0.0.0 0.255.255.255
!---This ACL permits traffic from all hosts in the Corporate network.  

route-map isp-2 permit 10
 match ip address 1
 match interface Serial1
!---This route-map matches all traffic matched by ACL 1 and going out of
interface serial 1. In other words, all traffic from the Corporate network to the Internet through ISP-2 is matched.  

route-map isp-1 permit 10
 match ip address 1
 match interface Serial0
!---This route-map matches all traffic matched by ACL 1 and going out of
interface serial 0. In other words, all traffic from the Corporate network to the Internet through ISP-1 is matched.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Routers

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.