[129324] in North American Network Operators' Group
Re: largest OSPF core
daemon@ATHENA.MIT.EDU (Christopher Morrow)
Thu Sep 2 21:46:04 2010
In-Reply-To: <20100902183755.GA7746@ussenterprise.ufp.org>
Date: Thu, 2 Sep 2010 21:45:59 -0400
From: Christopher Morrow <morrowc.lists@gmail.com>
To: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Thu, Sep 2, 2010 at 2:37 PM, Leo Bicknell <bicknell@ufp.org> wrote:
> In a message written on Thu, Sep 02, 2010 at 03:20:05PM +0300, lorddoskia=
s wrote:
>> =A0I'm just curious - what is the largest OSPF core (in terms of number
>> of routers) out there?
>
> I'll admit to having seen a network with over 400 devices in an
> OSPF area 0, didn't design it, and in the end didn't get to work
> on it.
I know of a large enterprise with ~4k devices in area-0, according to
their vendor^H^H^H^H^Hdesigner that was all perfectly fine.
> Far as I know worked just fine though, no issues reported. =A0How
> well your IGP scales depends a lot more on what you put in it, and
> how dynamic your network situation is than the protocol or number
> of devices.
>
I think the only reason the one I saw worked at all was it was
relatively stable. If things happened though (like say the code-red
incident in ... whenever that was) the network turned into a steaming
pile of fail.
really, not a good plan, of course as Leo says ISIS probably gets
super unhappy if a large percent of interfaces start to go
bouncey-bouncey.
-Chris
