[nsp] Redundant Default gateway

[Richard Walsh]

That's what I thought. The clients point to the router as their gateway,
and the router points to a firewall on the same ethernet segment. If the
firewall goes down, protocol is still up. Is there a way for the router
to determine that it's default gateway is no longer valid, and then
switch over to a secondary route? Thanks Jared!!

Rich


Jared Mauch wrote:
> 
> On Tue, Nov 12, 2002 at 11:26:36PM -0500, Richard Walsh wrote:
> > Hi,
> >
> > Yes I'm using point-to-point for the private frame. The default gateway
> > is on the same network as the ethernet int. The routing config looks
> > like this:
> > ip route 0.0.0.0 0.0.0.0 209.x.x.28 (the route to the firewall)
> > ip route 0.0.0.0 192.168.1.17 10 (the new route over the frame with the
> > .17 address the serial address of the remote site.
> > So, instead of pointing to the address of the other router, I should
> > point to the pvc? (serial0/0.5)
> 
>         you have a problem here.
> 
>         unless the physical ethernet interface goes down it will
> always assume that "if i can arp for it, it's up"
>         (ie line proto up).
> 
>         so unless you have some igp going between you and the .28
> router that can detect if default is gone, then you likely
> can't do this.
> 
>