The MPLS WG Archive

[Jim Boyle <jboyle@pdnets.com>]

First, great draft - I like this concept.

While a flag might be just the right thing for this particular
application, I wonder if it might be good to try to broaden 
soft preemption technique to include other polite preemptions.

These might include the following indicators

o) your LSP is being prempted on the indicated link (draft covers)
o) your LSP should be rerouted, this node is shutting down
o) your LSP should be rerouted, this link is being taken out of
   service
o) your LSP should be rerouted away from this node (administrative/CLI)
o) your LSP should be rerouted away from this link (administrative/CLI)

You can somewhat do some of these by changing metrics and waiting, but
just was wondering if something more general might be useful.

Also, with Diffserv TE, not sure that one can assume that a preemption
necessarily "implies exhausted bandwidth at the affected priority
level *and greater*" (section 5), but local implementations can do
as they please I suppose.

regards,

Jim