NAT question

[nitinnigam]

Hi,

We have 4 routers SR1& SR2 routers on one site and BR1& BR2 routers on other site.

HSRP is configured between SR1 & SR2 and also between BR1 &BR2.

SR1 (s0/0) is connected to BR1(s0/0) using serial link and also

SR2(s0/1) is connected to BR2(s0/1) using serial link

In SR1 router int f0/0.2 (192.168.2.0 network)interface we have defined "ip nat inside".

and there is host connected to BR1 router on int f0/0.7 (192.168.7.0 network)

If host on 192.168.7.0 wants to talk to 192.168.2.0 network where should I be using "ip nat outside"

Thanks

[smehrnia]

Hi there...

For SR1 the OUTSIDE interfavce would be its S0/0 Interface, as u know u gotta do the same NAT config on BR1, on BR1 u have the INSIDE (F0/0.7) and OUTSIDE (S0/0) as well.

[nitinnigam]

Hi

I am only using "ip nat inside" on SR1 on (f0/0.2) and not on BR1 router on (F0/0.7).

Thanks

[Georg Pauwen]

Hello,

I assume you are translating 192.168.2.0 to 192.168.7.0 addresses ? The ip nat outside needs to be on the serial interfaces of both SR1 and SR2 (that is because you are using HSRP between SR1 and SR2).

Regards,

Georg

[mauro.detoffoli]

In this scenario, I suppose that if you use NAT from network 192.18.2.0 to 192.168.7.0, on SR1 router you configure "ip nat inside" on interface FE0/0.2 and "ip nat outside" on interface Ser0/0. Another important things is the default gateway. You cannot use the hsrp address but the physical address in both side (on SR1 and BR1).