Name: draft-ietf-mpls-lsp-hierarchy-08
Title: LSP Hierarchy with Generalized MPLS TE
State: Pending
Authors: Kireeti Kompella, Yakov Rekhter
Group: Multiprotocol Label Switching (mpls)
Date: 2002-11-11
To improve scalability of Generalized Multi-Protocol Label Switching
(GMPLS) it may be useful to aggregate Label Switched Paths (LSPs) by
creating a hierarchy of such LSPs. A way to create such a hierarchy is by
(a) a Label Switching Router (LSR) creating a Traffic Engineering Label
Switched Path (TE LSP), (b) the LSR forming a forwarding adjacency (FA) out
of that LSP (by advertising this LSP as a Traffic Engineering (TE) link
into the same instance of ISIS/OSPF as the one that was used to create the
LSP), (c) allowing other LSRs to use FAs for their path computation, and
(d) nesting of LSPs originated by other LSRs into that LSP (by using the
label stack construct). This document describes the mechanisms to
accomplish this.
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