[143547] in North American Network Operators' Group
Re: OSPF vs IS-IS
daemon@ATHENA.MIT.EDU (Stefan Fouant)
Thu Aug 11 21:36:48 2011
Date: Thu, 11 Aug 2011 21:36:01 -0400
From: Stefan Fouant <sfouant@shortestpathfirst.net>
To: Jimmy Hess <mysidia@gmail.com>
In-Reply-To: <CAAAwwbVBp0yCemfBH776u_h9HEAEfJZNiJ-GO-aM-KMHHwJUNg@mail.gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>, CJ <cjinfantino@gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 8/11/2011 8:16 PM, Jimmy Hess wrote:
>
> I would encourage you to ask the opposite question: " Is there any
> reason to run OSPF over IS-IS in the SP core?"
> And the answer would be... probably not. There is not really a good
> technical reason to run OSPF over IS-IS in the SP core.
> You might have some aesthetic considerations such as wanting the SP
> core to run the same protocol as something else,
> despite its limitations.
Just to add to everything that Jimmy said, if you've got the time to do
an in-depth side-by-side analysis of the two protocols, I strongly
recommend the book "OSPF and IS-IS: Choosing an IGP for Large-Scale
Networks" by Jeff Doyle. I can't speak highly enough of this book...
Stefan Fouant
JNCIE-ER, JNCIE-M, JNCIE-SEC, JNCI
Technical Trainer, Juniper Networks
http://www.shortestpathfirst.net
http://www.twitter.com/sfouant
