RE: migration of ospf to ISIS

Jack: Could you please share the reason why was the requirement to move
from ospf to isis as part of the underlying igp ? As per my
understanding isis can natively support ipv6 where as you have to
configure ospv3 for the same.
Thanks
Manoj

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Rick Mur
Sent: Friday, September 25, 2009 6:37 AM
To: Iwan Hoogendoorn
Cc: jack daniels; Cisco certification
Subject: Re: migration of ospf to ISIS

I agree with Iwan, as long as your hardware allows it. I also did a
migration from OSPF to IS-IS, but enabling IS-IS next to OSPF. It did
increase some CPU, but I guess an ISP should have enough powerful
hardware
to support this.

--
Regards,
Rick Mur
CCIE2 #21946 (R&S / Service Provider)
Sr. Support Engineer  IPexpert, Inc.
URL: http://www.IPexpert.com
On Wed, Sep 23, 2009 at 11:30 AM, Iwan Hoogendoorn
<iwan_at_ipexpert.com>wrote:
> Hi Jack,
>
> I think the best way here is to set up a topology and do 2 tests on
this...
> - First configure OSPF on the topo
> - Second configure ISIS on the topo
>
> Verify the differences in terms of CPU load and try to look at the
> timers / routing table guess this will be the same ...
>
>
> --
> Regards,
>
> Iwan Hoogendoorn
> CCIE #13084 (R&S / Security / SP)
> Sr. Support Engineer   IPexpert, Inc.
> URL: http://www.IPexpert.com
>
>
> On Wed, Sep 23, 2009 at 9:49 AM, jack daniels <jckdaniels12_at_gmail.com>
> wrote:
> > Hi all ,
> >
> > I have got a project for an ISP ( also LDP configured ) runnning
OSPF to
> > migrate to IS-IS.
> > I was planning to runnn dual IGP , as ospf with AD 110 and ISIS with
AD
> 115
> > , OSPF will always be preffered.
> >
> > I was planning the challenges for migration, below are the ones
which I
> > could think of , please give your inputs on WHAT CONSIDERATIONS TO
KEEP
> IN
> > MIND BEFORE MIGRATION.
> > Also request you to share some docs for migration of OSPF to
ISIS<<<<<
> >
> > 1)  MEMORY/CPU utilisation
> > 2)  no. of routes in routing table and database
> > 3)  harware of the cisco devices ( 7206/12K)
> >
> > Regards
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> >