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bsciarra1
Beginner

Set up NAT on cisco 2811

Good morning, i have a branch router that connects to mpls WAN.  Also has a second interface that is used for dmvpn failover in case WAN goes down.

We want to use this second interface also as the primary internet circuit for the branch.  I changed the default route to the next hop address on the other side of the second interface and expected this to work.

But i was told i need to set up NAT for this to work, and set up an ACL for NAT to use.

Does anyone know how to set up NAT?

1 REPLY 1
Tirumala Earla
Beginner

I am taking an Example

Your Private IP: 192.168.1.0/24

ISP connected INterface is Serial 0/0

Configuration

--------------------

R1(config)# access-list 100 remark ---NAT--

R1(config)# access-list 100 permit ip 192.168.1.0 0.0.0.255 any

R1(config)# ip nat inside source list 100 interface serial 0/0 overload

Verification

----------------

R1# show ip nat translations