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 <cjinfant...@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>
