>... host systems should participate in IGP >We tried that.
>It didn't scale well. >The Internet today is very different than the Internet in 1981. -did you? I thought CLNS with plethora of ip addresses compared to ipv4 was buried before it could be widely deployed, I was not around back than but would like to know why ES-IS did not scale well when integrated IS-IS is still used primarily for great scalability