03-09-2007 08:16 AM - edited 03-03-2019 04:06 PM
We bought out another company and are connecting our networks. Unfortunately their numbering clashes with one of our own.
I am planning on setting up NAT on their router to NAT their addressing to something else but have a question regarding OSPF. I need OSPF to propagate the NATTED subnet and not their true subnet.
Is this possible?
Denny
Solved! Go to Solution.
03-12-2007 03:27 PM
Absolutely possible. From the router that does NAT, the subnet can be originated as external - "redistribute static subnets".
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03-12-2007 03:12 PM
Bump..
Is this possible?
If not, any recommendations? We use OSPF to maintain floating static routes for DDR backups.
Renumbering one of the subnets is not an option at the moment.
Denny
03-12-2007 03:27 PM
Absolutely possible. From the router that does NAT, the subnet can be originated as external - "redistribute static subnets".
Remember to rate useful posts!
03-12-2007 04:06 PM
That is exactly what I was looking for.
Thank you,
Denny
03-12-2007 04:52 PM
Okay, I guess I need more help.
How do I redistribute a static subnet or inject a subnet into OSPF to be propagated?
I've used the redistribute static command before, but I actually had a route in my routing table.
On the NAT router, this subnet solely exists in a NAT translation.
Thanks,
Denny
03-12-2007 05:21 PM
You can configure a static route to point to the null0 interface like this one;
ip route <172.16.1.0 255.255.255.0> null0
This would cause the route to be put into the routing table as a static route. Substitute the IP with your NAT IP.
HTH
Sundar
03-12-2007 05:23 PM
Thank you so much. That worked like a charm.
Denny
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