NAT Configuration for Dual WAN Router

Thu Dec 15 21:05:29 UTC 2005

Rodney Dunn wrote:
> On Thu, Dec 15, 2005 at 08:33:55AM -0600, eric wrote:
> 
>>[ This is not a plug for a vendor, just operational experience ]
>>
>>On Thu, 2005-12-15 at 10:49:51 +0100, Peter Dambier proclaimed...
>>
>>
>>>I dont see how the router can NAT to more than one ip-address. So you need
>>>one NAT-router per DSL-line.
>>
>>I have some experience with the Xincom Twin WAN router. Basically, all it
>>does is NAT RFC1918 address space (by default) and load balance stateless
>>TCP traffic (ie. web traffic) over two outbound links. Established TCP
>>sessions will not fail over, unfortunately, but the device is fairly
>>reliable and does NAT-T fairly easy. 
> 
> 
> Interesting in that I was talking with a customer about something
> similar to that today. How can you do nat and failover but keep the
> existing TCP sessions alive. Given the two upstreams were doing uRPF
> we couldn't come up with a solution.

<troll>

Shim6 will fix all of this.

</troll>

<duck, run>
-- 
Crist J. Clark                               crist.clark at globalstar.com
Globalstar Communications                                (408) 933-4387