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

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