[25110] in North American Network Operators' Group
Re: IS-IS reference
daemon@ATHENA.MIT.EDU (Randy Bush)
Tue Sep 14 08:04:43 1999
From: Randy Bush <randy@psg.com>
To: Vadim Antonov <avg@kotovnik.com>
Cc: nanog@merit.edu
Date: Tue, 14 Sep 1999 05:03:05 -0700
Errors-To: owner-nanog-outgoing@merit.edu
in general, i agree. except for a quibble
> The backbone should not take _any_ routing information from the leaf
> networks.
there are cases where one has to:
o multi-homed customers who need to speak bgp. yes, one could 'cheat'
and not listen to their announcements and static route them. but it
is easier to get the safety by buildin acls from the routing
databases. (and don't start ranting on that one:-)
o pops where one's local complexity is sufficiently high, or router
management is delegated, so that ibgp or confederation are the most
reasonable ways to partition into managable pieces (remember the
business model which drives my life).
randy
