Hi, It has to do with protocols design. For new extensions IS-IS just needs a new TLV while OSPF requires some serious changes. >From my observation: few years ago most of new features came out first for ISIS last year I see some stuff coming for OSPF first: flooding of mesh group info for MPLS TE is supported by OSPF only, some other stuff as well
Cheers, Jeff > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:cisco-nsp- > [EMAIL PROTECTED] On Behalf Of Gert Doering > Sent: dinsdag 24 april 2007 15:54 > To: Joe Shen > Cc: nsp > Subject: Re: [c-nsp] IS-IS or OSPF as IGP? > > Hi, > > On Tue, Apr 24, 2007 at 09:42:46AM +0800, Joe Shen wrote: > > And, to my knowledge, technical research on OSPF is > > more fertile than IS-IS, and new feature is introduced > > to OSPF eariler than IS-IS. > > Well - this is something opinions differ on, given that IPv6 could very > easily be added to IS-IS, while they had to do a completely new protocol > (OSPFv3) to be able to make it do IPv6... > > I think IS-IS is more elegant due to the way it does v4 and v6 basically > in a single protocol, all in one go, and with OSPF you need to run two > routing instances mostly doing the same, but independently so - but > OTOH, IS-IS using OSI transport, which means "if your IP stack breaks, > your routing protocol might still happily assign reachability" (which > did happen to BT some years ago). > > So in summary - use whatever you're familiar with, and what works for you. > > gert > -- > USENET is *not* the non-clickable part of WWW! > > //www.muc.de/~gert/ > Gert Doering - Munich, Germany > [EMAIL PROTECTED] > fax: +49-89-35655025 [EMAIL PROTECTED] > muenchen.de > _______________________________________________ > cisco-nsp mailing list cisco-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/