[c-nsp] non-BGP ISP redundancy

[Rodney Dunn]

On Thu, Aug 18, 2005 at 09:17:31PM -0700, Kevin Graham wrote:
> On 8/18/05, Rodney Dunn <rodunn at cisco.com> wrote:
> > I guess what would be cool would be if a router
> > doing PAT could interoperate with some form
> > of dynamic DNS service.
> >
> > Is that some proprietary implementation or is that
> > something the router could do?
> 
> I'm guessing this was facetious, but in case anyone else hadn't seen it:

Nope. Didn't know/understand how this works.

> 
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123limit/123y/123ya8/gt_ddns.htm
> 

So what I was thinking was if you could make the VPN client server
list point to the ISPA address as primary and then if that fails
roll down to a dns record that is dynamically updated with the
ip address that is assigned on the ISPB interface?

That would get the client reachability back to the hub router
and then you could have a static port map mabye on the backup
link to get the traffic to the PIX?

> Its come up on the list a few times in the past, but if there was just
> a way to get runtime name resolution rather than config-time so things
> like this could be more useful....