I need a Cisco 1841 router to perform Static NAT only for a given remote destination.
For example, we have
Site A <==> Site B <==> Site C
When Site A talks to Site B I don't need a NAT translation. But when Site A talks to Site C, I need the router at Site B to NAT 192.168.1.0/24 to 10.40.1.0/24. When Site C talks to 10.40.1.0/24 I need it to NAT to 192.168.1.0/24.
I've been able to get it to work using route-maps and dynamic NAT pools, but it's not the way I need it. For example, 192.168.1.158 is being NATTED to 10.40.1.1 instead of 10.40.1.158 and the return traffic isn't making it back.
Can I ask why the need for NAT? It seems like you should just be able to turn on ospf or eigrp and route the traffic accordingly? I don't want to oversimplify, however doing a one to one nat for 254 hosts, sounds pretty cumbersome.
Site C bought us out and assigned us a block of private addresses. We haven't renumbered Site A yet but need the connectivity right away. Somewhere on the Site C network they have an overlap and mandated we change our end.
Since Site B was ours to begin with, all their hosts are currently configured to access Site A resources on the old subnet.
The good news is the one to one configuration went pretty quick using Excel and notepad and pasting the configuration into the router.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...