RSVP-TE extensions for interdomain LSPs
Cristel Pelsser and Olivier Bonaventure
We propose extensions to RSVP-TE to allow the establishment of
traffic engineered LSPs with fast restoration requirements. We first
discuss the problem of
establishing explicitly routed interdomain LSPs and show that the
current subobjects found in RSVP-TE are not sufficient to establish
interdomain LSPs because they do not take into account the policy
constraints of the interdomain environment. We then show how to
extend the fast-reroute and detour objects to protect interdomain
links and ASBRs on interdomain LSPs. We also discuss the
establishment of disjoint interdomain LSPs for restoration and load
balancing purposes in the appendix. Finally, we describe the
necessary RSVP objects and flags and discuss the impact of the
proposed solution on the syntax of existing RSVP-TE objects and the
syntax of new required objects are presented.
IETF draft, Work in progress, draft-pelsser-rsvp-te-interdomain-lsp-00.txt, October 2002.
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