nanog mailing list archives
Re: IGP choice
From: Bill Blackford <bblackford () gmail com>
Date: Thu, 22 Oct 2015 14:22:02 -0700
I don't have all the details because I don't fully understand it, but I've heard that if you're running an MPLS/RSVP core, you can only use a single OSPF area. This introduces a scalability ceiling. On Thu, Oct 22, 2015 at 12:35 PM, Dave Bell <me () geordish org> wrote:
On 22 October 2015 at 19:41, Mark Tinka <mark.tinka () seacom mu> wrote:The "everything must connect to Area 0" requirement of OSPF was limiting for me back in 2008.I'm unsure if this is a serious argument, but its such a poor point today. Everything has to be connected to a level 2 in IS-IS. If you want a flat area 0 network in OSPF, go nuts. As long as you are sensible about what you put in your IGP, both IS-IS and OSPF scale very well. The differences between the two protocols are so small, that people really grasp at straws when 'proving' that one is better over the other. 'IS-IS doesn't work over IP, so its more secure'. 'IS-IS uses TLVs so new features are quicker to implement'. While these may be vaguely valid arguments, they don't hold much water. If you don't secure your routers to bad actors forming OSPF adjacencies with you, you're doing something wrong.Who is running code that is so bleeding edge that feature X might be available for IS-IS, but not OSPF? Chose whichever you and your operational team are most comfortable with, and run with it. Regards, Dave
-- Bill Blackford Logged into reality and abusing my sudo privileges.....
Current thread:
- RE: IGP choice, (continued)
- RE: IGP choice Damien Burke (Oct 22)
- RE: IGP choice Steve Mikulasik (Oct 22)
- Re: IGP choice Randy via NANOG (Oct 22)
- Re: IGP choice Dave Bell (Oct 22)
- Re: IGP choice Mark Tinka (Oct 22)
- Re: IGP choice sthaug (Oct 22)
- Re: IGP choice Baldur Norddahl (Oct 22)
- Re: IGP choice Pablo Lucena (Oct 22)
- RE: IGP choice Damien Burke (Oct 22)
- Re: IGP choice A . L . M . Buxey (Oct 22)
- Re: IGP choice thomas nanog (Oct 22)
- Re: IGP choice Bill Blackford (Oct 22)
- Re: IGP choice Mark Tinka (Oct 22)
- Re: IGP choice Saku Ytti (Oct 23)
- Re: IGP choice Mark Tinka (Oct 23)
- Re: IGP choice Saku Ytti (Oct 23)
- Re: IGP choice Mikael Abrahamsson (Oct 23)
- Re: IGP choice Mark Tinka (Oct 23)
- Re: IGP choice marcel.duregards () yahoo fr (Oct 23)
- Re: IGP choice Mark Tinka (Oct 23)
- Re: IGP choice Matthew Petach (Oct 30)
- Re: IGP choice Mark Tinka (Oct 30)