[129307] in North American Network Operators' Group
Re: largest OSPF core
daemon@ATHENA.MIT.EDU (Owen DeLong)
Thu Sep 2 16:42:26 2010
From: Owen DeLong <owen@delong.com>
To: Deepak Jain <deepak@ai.net>
In-Reply-To: <D338D1613B32624285BB321A5CF3DB251037180F57@ginga.ai.net>
Date: Fri, 3 Sep 2010 06:04:57 +0930
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Sent from my iPad
On Sep 3, 2010, at 3:42 AM, Deepak Jain <deepak@ai.net> wrote:
>> Subject: Re: largest OSPF core
>>=20
>> On 02/09/2010 13:20, lorddoskias wrote:
>>> I'm just curious - what is the largest OSPF core (in terms of number
>> of
>>> routers) out there?
>>=20
>> You don't expect anyone to actually admit to something like this? :-)
>>=20
>=20
>=20
> For giggles:
>=20
> =
http://books.google.com/books?id=3DuBwEAAAAMBAJ&pg=3DPA59&dq=3Dpractical+l=
imits+of+OSPF&hl=3Den&ei=3Dqud_TNTAFYL68AautJXoAQ&sa=3DX&oi=3Dbook_result&=
ct=3Dresult&resnum=3D2&ved=3D0CCwQ6AEwAQ#v=3Donepage&q=3Dpractical%20limit=
&f=3Dfalse
>=20
> Network World April 9, 1990 (page 59):
>=20
> "There is no practical limit to the number of interconnected networks =
OSPF and Dual Intermediate System-to-Intermediate System can support"...
>=20
> "=46rom the onset, OSPF was intended to be short-term, for IP-only"..
>=20
> "Dual routing is intended to be more of a long-term solution because =
there will be very few pure OSI or TCP/IP routing environments in the =
future."
>=20
> ---
>=20
> Technology prognosticators shouldn't try their hands in Vegas. Just =
saying.
>=20
> With respect to these OSPF questions, how many people are running two =
OSPF processes on each router (v4 and v6) to support dual stack rather =
than migrating (or just enjoying their existing) ISIS (OSI) =
implementations?
>=20
You left out the option of using ospf3 to do both v4 and v6. Works on =
juniper and foundry at least.
Owen
> Deepak
>=20
