OSPF vs IS-IS

Thu Aug 11 13:06:18 UTC 2011

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>