why am i in this handbasket? (was Devil's Advocate - Segment Routing, Why?)

Sun Jun 21 11:11:41 UTC 2020

Robert Raszuk wrote:

> MPLS LDP or L3VPNs was NEVER flow driven.
> 
> Since day one till today it was and still is purely destination based.

If information to create labels at or near sources to all the
possible destinations is distributed in advance, may be. But
it is effectively flat routing, or, in extreme cases, flat host
routing.

Or, if information to create labels to all the active destinations
is supplied on demand, it is flow driven.

On day one, Yakov said MPLS had scaled because of nested labels
corresponding to routing hierarchy.

						Masataka Ohta