[24186] in North American Network Operators' Group
Re: OSPF multi-level hierarchy: Necessary at all?
daemon@ATHENA.MIT.EDU (Vadim Antonov)
Thu May 27 21:48:48 1999
Date: Thu, 27 May 1999 18:47:18 -0700
From: Vadim Antonov <avg@kotovnik.com>
To: tony1@home.net
Cc: nanog@merit.edu, zinin@amt.ru
Errors-To: owner-nanog-outgoing@merit.edu
Tony Li <tony1@home.net> wrote:
>> There's a better solution: decrease the number of nodes by replacing
>> clusters with bigger boxes. This has an additional advantage of reducing
>> number of hops (and, consequently, latency variance).
>Certainly that helps, but as we move forward you still end up with lots of
>boxes in the network simply because you're in many different geographic
>locations.
Well, actually it is not that bad. The biggest number of locations is
probably found in AT&T phone network - 250 or so. Sprint is in few
dozen. The existing IGPs are quite happy with that kind of complexity,
so if you belong to the "one-router-per-POP" school of thought the
IGP complexity is a non-issue.
--vadim
