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	Title		: Extended RSVP-TE for Multicast LSP Tunnels
	Author(s)	: S. Yasukawa et al.
	Filename	: draft-yasukawa-mpls-rsvp-multicast-00.txt
	Pages		: 39
	Date		: 26-Jun-02
	
Multicast technology will become increasingly important with the
dissemination of new applications such as contents delivery services
and video conferences, which require much more bandwidth and stricter
QoS than conventional applications. From the service providers'
perspective, traffic engineering (TE) functions will be needed to
handle the large amount of multicast traffic.
This document defines some protocol extensions to the existing RSVP-
TE[1] in order to establish a multicast label switched path (LSP).
The use of label switching routers (LSRs) with these protocol
extensions defined in this document allows service providers to offer
unicast and multicast multiprotocol label switching (MPLS) services
in the same service network.
This protocol assumes a variable LSP topology, e.g., point-to-
multipoint, multipoint-to-multipoint, topologies. This document
describes how to establish point-to-multipoint and multipoint-to-
multipoint LSPs as the most basic multicast topology. It defines two
ways of constructing a point-to-multipoint LSP: sender-initiated LSP
setup and leaf-initiated LSP setup. Each method has an LSP
modification function in order to adapt to dynamic changes in the LSP
tree topology.
This MPLS architecture[10] is very flexible and can be expanded to
carry protocols other than IP multicasting, e.g., Ethernet, PPP, and
SONET/SDH, but this document only defines IP multicasting (IPv4 and
IPv6) as a forwarding equivalence class object (FEC).

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