I-D ACTION:draft-vigoureux-shiomoto-ccamp-gmpls-mrn-04.txt

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	Title		: Generalized MPLS Architecture for Multi-Region Networks
	Author(s)	: M. Vigoureux
	Filename	: draft-vigoureux-shiomoto-ccamp-gmpls-mrn-04.txt
	Pages		: 24
	Date		: 2004-2-18
	
Most of the initial efforts on Generalized MPLS (GMPLS) have been
related to environments of single switching capability devices e.g.
one data plane layer, as such, the complexity raised by such control
planes is similar to the one expected in classical IP/MPLS networks.
The fundamental reason being that an IP-based control plane protocol
suite for Label Switch Routers (LSR) or Optical Cross-Connects (OXC)
has exactly the same Level (i.e. single data plane layer)
complexity.
The present document analyses the various GMPLS signaling and
routing aspects when considering network environments consisting of
multiple switching data layers e.g. supporting combined
Packet/Layer-2 Switching - OXC devices. The examples provide an
overview of the tradeoffs in using a GMPLS control plane for
combined Ethernet MAC - opaque, service transparent, and/or fully
transparent data planes. The intent of this memo is also to
demonstrate that these aspects may not be as straightforward as they
may first appear.

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