Hi Steve,
The most honest comparison I've seen has been Dave Katz's presentation at
NANOG19:
http://www.nanog.org/mtg-0006/katz.html
As to IS-IS documentation, yes that is a weak point. We've got some new
IS-IS presentations out on the ISP Workshop site, with more coming in the
future.
http://www.cisco.com/public/cons/workshop/
Barry
> -----Original Message-----
> From: Steve Lilley [mailto:slilley@thrupoint.net]
> Sent: Wednesday, September 06, 2000 7:58 PM
> To: Cisco NSP List
> Subject: [nsp] Advantages of IS-IS over OSPF
>
>
> Is there some advantage that IS-IS offers over OSPF for ISP
> backbones? I can't find anything documented...in fact, I can find
> VERY little documentation on IS-IS. This is quite a contrast to
> OSPF, where there is actually more information than I could ever
> want! :-)
>
> >From what I can tell, the biggest advantage for IS-IS is the fact
> that the backbone area is more flexible than OSPF's area 0. With
> IS-IS's two-tiered approach, the backbone can "snake" around the
> network easier than OSPF's area 0. Beyond that, I don't see many
> advantages. Since IS-IS is multiprotocol by design, it may
> initially support newer non-IPv4 protocols (i.e. multicast, IPv6,
> etc.) before OSPF, but that won't be tolerated for long by the
> huge number of OSPF customer's out there!
>
> As always, and feedback is appreciated!
>
> Regards,
> Steve Lilley
> ThruPoint
>
>
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