[nsp] Dial-Backup for PPPoE-Dialer?

Chris Roberts croberts at bongle.co.uk
Thu Feb 12 10:10:41 EST 2004

> You could.  It creates a dependency on the ISP's router IP address,
> which is bad bad bad bad - ISP adds more routers, or moves some L2TP
> tunnels to a different routers, and suddenly you need to use the same
> loopback IP on different boxes, or your client dialup will break.
> The fact that you can do "ip route dialer1" without
> knowing the specific IP of the remote end is *very* useful...

This depends if you've got a /30 on the link, which I assume from your reply
that you havn't :-) If you have a /30 on the link and use dialer-watch on
the specific /32 of the peer, you avoid this problem. I've not found a way
of getting round this problem other than to use a routing protocol if you
use IP unnumbered.


More information about the cisco-nsp mailing list