nanog mailing list archives
Re: OSPF vs IS-IS
From: Stefan Fouant <sfouant () shortestpathfirst net>
Date: Fri, 12 Aug 2011 08:46:38 -0400
On 8/12/2011 8:40 AM, James Jones wrote:
I would not say ISIS is the prefered protocol. Most service providers I have worked with use OSPF. Most networks outside of the US use it from what I have seen and the larger SPs in the US do too. There must be a reason for that.
Actually, i strongly disagree with this statement. A good majority of the Tier-1 Service Providers that I have worked with in the past used IS-IS, I think in large part due to the points mentioned earlier. I know for a fact that in the late 90s, when we were transitioning from an ATM core to an MPLS core at UUnet, we selected IS-IS largely due to the fact that it supported MPLS Traffic Engineering extensions before comparable support was available in OSPF, and the main reason for this was due to the fact that IS-IS was TLV based.
Stefan Fouant JNCIE-ER, JNCIE-M, JNCIE-SEC, JNCI Technical Trainer, Juniper Networks http://www.shortestpathfirst.net http://www.twitter.com/sfouant
Current thread:
- Re: OSPF vs IS-IS, (continued)
- Re: OSPF vs IS-IS Randy Bush (Aug 17)
- Re: OSPF vs IS-IS Justin M. Streiner (Aug 17)
- Re: OSPF vs IS-IS Cameron Byrne (Aug 17)
- Re: OSPF vs IS-IS Scott Morris (Aug 17)
- RE: OSPF vs IS-IS Leigh Porter (Aug 17)
- Re: OSPF vs IS-IS CJ (Aug 11)
- Re: OSPF vs IS-IS Jeffrey S. Young (Aug 12)
- Re: OSPF vs IS-IS jim deleskie (Aug 12)
- Re: OSPF vs IS-IS CJ (Aug 12)
- Re: OSPF vs IS-IS James Jones (Aug 12)
- Re: OSPF vs IS-IS Stefan Fouant (Aug 12)
- Re: OSPF vs IS-IS Jeffrey S. Young (Aug 13)
- Re: OSPF vs IS-IS Randy Bush (Aug 13)
- Re: OSPF vs IS-IS Jeffrey S. Young (Aug 13)
- Re: OSPF vs IS-IS Saku Ytti (Aug 13)
- Re: OSPF vs IS-IS Tom Hill (Aug 12)
- Re: OSPF vs IS-IS Scott Morris (Aug 12)
- Re: OSPF vs IS-IS Scott Morris (Aug 12)
- RE: OSPF vs IS-IS Doug Marschke (Aug 16)
- Re: OSPF vs IS-IS Jeff Wheeler (Aug 12)
- Re: OSPF vs IS-IS Douglas Otis (Aug 12)