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OSPF vs IS-IS
- Subject: OSPF vs IS-IS
- From: sfouant at shortestpathfirst.net (Stefan Fouant)
- Date: Thu, 11 Aug 2011 09:06:18 -0400
- In-reply-to: <CADr_k3ZUfHmWQyBu48x_0RsbEphj_XOZ+b=ygxJ0kYBk1G=2bQ@mail.gmail.com>
- References: <CADr_k3ZUfHmWQyBu48x_0RsbEphj_XOZ+b=ygxJ0kYBk1G=2bQ@mail.gmail.com>
Well up until not too long ago, to support IPv6 you would run OSPFv3 and for IPv4 you would run OSPFv2, making IS-IS more attractive, but that is no longer the case with support for IPv4 NLRI in OSPFv3.
The only reason in my opinion to run IS-IS rather than OSPF today is due to the fact that IS-IS is decoupled from IP making it less vulnerable to attacks.
Stefan Fouant
JNCIE-M, JNCIE-ER, JNCIE-SEC, JNCI
Technical Trainer, Juniper Networks
http://www.shortestpathfirst.net
http://www.twitter.com/sfouant
Sent from my iPad
On Aug 11, 2011, at 8:57 AM, CJ <cjinfantino at gmail.com> wrote:
> Hey all,
> Is there any reason to run IS-IS over OSPF in the SP core? Currently, we
> are running IS-IS but we are redesigning our core and now would be a good
> time to switch. I would like to switch to OSPF, mostly because of
> familiarity with OSPF over IS-IS.
> What does everyone think?
>
> --
> CJ
>
> http://convergingontheedge.com <http://www.convergingontheedge.com>