On 11/30/2012 08:46 AM, Adam Vitkovsky wrote:
global labels would even allow us to get rid of LDP, by distributing
labels via ISIS
And that would be AWESOME, I didn't quite get the idea of creating other RIP
like protocols in favor of existing link-state protocols -same goes for PIM
vs ISIS
You mean like MOSPF?
Frankly, I don't see why you'd want to load your IGP up with the soft
state from multicast; it can be potentially large, and
frequently-changing. I *like* that PIM runs above the IGP.
Also, PIM has to deal with the whole register/register-stop and other
junk. So it's not just carrying routes.
LDP is of course a slightly different matter. It may indeed have made
sense to put labels in the IGP rather than LDP. But there are things LDP
can do (e.g. multi-hop sessions for PW) that IGP can't. And once you've
got LDP for those, you may as well leave the IGP alone - I guess that
was the reasoning.
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