NAT

Unanswered Question
Dec 30th, 2007

Hi,

Following is my router config.

R1

!

interface FastEthernet0

ip address 201.x.x.x 255.255.255.248

ip nat out side

!

interface FastEthernet1

ip address 172.16.1.1 255.255.255.0

ip nat inside

!

ip nat pool OFFICE 201.x.x.x 201.x.x.x netmask 255.255.255.252

ip nat inside source list 10 pool OFFICE overload

!

access-list 10 permit ip 172.16.1.0 0.0.0.255

We get another 202.x.x.x/30 ip address from ISP and I would like both /30 to be NAT. how to config the router?

rgds

I have this problem too.
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Edison Ortiz Sun, 12/30/2007 - 09:58

1) You need to configure a secondary IP address on interface FastEthernet0 that is part of the 202.x.x.x/30 network.

2) Create a new pool

3) Create a new list

If you want to load balance between the 2 NATs, you can break the current ACL as follow:

no access-list 10 permit ip 172.16.1.0 0.0.0.255

access-list 10 permit ip 172.16.1.0 0.0.0.127

access-list 20 permit ip 172.16.1.128 0.0.0.127

interface FastEthernet0

ip address 202.x.x.x 255.255.255.252 secondary

ip nat pool OFFICE-202 202.x.x.x 202.x.x.x netmask 255.255.255.252

ip nat inside source list 20 pool OFFICE-202 overload

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