MPLS draft-kompella-mpls-rsvp-constraints-00.txt

[Kireeti Kompella <kireeti@juniper.net>]

NAME OF ID

  http://search.ietf.org/internet-drafts/draft-kompella-mpls-rsvp-constraints-00.txt

SUMMARY

  This ID provides a means of signaling TE constraints for an explicit
  route.  This has several applications, among them hierarchical TE.


RELATED DOCUMENTS

   draft-kompella-mpls-multiarea-te-00.txt


WHERE DOES IT FIT IN THE PICTURE OF THE SUB-IP WORK

  Probably in MPLS, as it extends RSVP-TE.


WHY IS IT TARGETED AT THIS WG

  It introduces new objects into RSVP-TE, which is currently owned
  by MPLS.


JUSTIFICATION

  Constraint-based routing is a powerful tool.  The idea that the
  signalling protocol can carry the constraints as well as the path
  (perhaps incompletely specified) makes the signalling protocol
  self-contained, and is a powerful extension to constraint-based
  routing.

  This ID proposes just such a mechanism -- to carry constraints in
  an extensible fashion, such that the semantics are universally
  understood -- by encoding them as a program.  Furthermore, the
  fact that constraints are encoded as a program means that the
  universe of constraints grows from a small, predefined set to
  whatever is expressible in the constraint language.

  Besides, this idea is so whacky that it deserves a read.

Kireeti.