[c-nsp] Rationale for ISIS default origination behavior

[Adam Vitkovsky]

> However, we also configure the routers with eBGP peers to originate
defaults into the IGP, presumably for faster convergence, although given the
design I really don't know that convergence will be that much faster. 


So than you must also be using the "bgp nexthop route-map" or "nexthop
route-policy" in order to control what routes are valid for iBGP next-hops
right?
Cause if the /32 route for some peer's loopback/iBGP next-hop disappears
form ISIS I guess you don't want to follow default route to get to that peer


adam