[87385] in North American Network Operators' Group
Re: NAT Configuration for Dual WAN Router
daemon@ATHENA.MIT.EDU (Crist Clark)
Thu Dec 15 16:05:58 2005
Date: Thu, 15 Dec 2005 13:05:29 -0800
From: Crist Clark <crist.clark@globalstar.com>
In-reply-to: <20051215142411.G26194@rtp-cse-489.cisco.com>
To: Rodney Dunn <rodunn@cisco.com>
Cc: nanog@merit.edu
Reply-To: crist.clark@globalstar.com
Errors-To: owner-nanog@merit.edu
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@globalstar.com
Globalstar Communications (408) 933-4387
