> > The biggest problem with using non-routable ip addresses on numbered interfaces
> > whether point to point or frame or atm or whatever, is that you lose outside
> > connectivity from those interfaces. We tried this, but the essential
> > traceroutes from our core routes are too important when debugging BGP
> > problems to the outside.

It shouldn't affect traceroutes. If it did the TOTD would never have been

But it obviously affects traceroutes outside of the network, which is what
I was referring to above. Tracerouting outside of our network is just as
important as inside.

> I agree. I can't see how a lot of debugging functions would be possible
> from the unmanned POPs if we used private ips.

Presumably the private IP addresses would be fully routed within your
network but filtered at the borders.

Michael Dillon - ISP & Internet Consulting
Memra Software Inc. - Fax: +1-604-546-3049 - E-mail: