How about the same reason as having OSPF over Serial links? Emergency
Backup. Not sure if you know but Avi Freeman of Net Access in Phili
sells a service like this, for something like $200 or $300 a month, he
gives you an ISDN number, and whenever your main T-1 is down, you can
call the number (You pay long distance charges) and he'll announce your
routes via BGP. Great for the Cisco 25XX that has a built in BRI. Now
mind you, I'm not advocating this, I'd just like to be able to do OSPF
over dialup ports so that I can throw a Pop on ISDN if the FR Cloud
goes down.
--- |Douglas ``Wildcat'' Warren |Email: dwarren@netusa.net| Jura gur tbireazrag |Network/Security Consultant|Phone: (516) 543-0234 | bhgynjf Pelcgbtencul, |President of SBCS a chapter| Fax: (516) 543-0274 | bayl pevzvanyf jvyy |of the ACM. | PGP: finger dwarren | unir cevinpl