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Hey all,

This one has me a little stumped, I have two Cisco routers
configured as below: I have all of the correct NAT command and NAT is
working fine for Router A, but anything coming from Router B
192.168.3.x is not getting NAT'd. I made sure that I have access-list
1 permit 192.168.3.0 0.0.0.255 as I do for 192.168.1.0 in order to
process NAT.

Any ideas why Router B can not NAT out Router A?

Router A

Ethernet 1 192.168.1.1 255.255.255.0
nat inside
Serial 0
nat outside

Router B
Ethernet 1 192.168.1.254 255.255.255.0

Ethernet 2 192.168.3.1 255.255.255.0

On Jul 25, 8:22 pm, rstev...@cstechsol.com wrote:
> Hey all,
>
> This one has me a little stumped, I have two Cisco routers
> configured as below: I have all of the correct NAT command and NAT is
> working fine for Router A, but anything coming from Router B
> 192.168.3.x is not getting NAT'd. I made sure that I have access-list
> 1 permit 192.168.3.0 0.0.0.255 as I do for 192.168.1.0 in order to
> process NAT.
>
> Any ideas why Router B can not NAT out Router A?
>
> Router A
>
> Ethernet 1 192.168.1.1 255.255.255.0
> nat inside
> Serial 0
> nat outside
>
> Router B
> Ethernet 1 192.168.1.254 255.255.255.0
>
> Ethernet 2 192.168.3.1 255.255.255.0

Kinda hard to say without seeing a bit more of the configs - can you
post full (sanitised if necessary) configs for routers A & B?
Having said that,...

I'd be looking at ACLs and routing first of all. Can you ping
192.168.1.1 from 192.168.3.1 for example?
What do you see if you do a debug on router A for NAT?
Can you consider NAT on router B to overload 192.168.3.0/24 onto
192.168.1.254?