[rbridge] I-D ACTION:draft-ietf-trill-rbridge-protocol-07.txt

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This draft is a work item of the Transparent Interconnection of Lots of Links Working Group of the IETF.

	Title		: Rbridges: Base Protocol Specification
	Author(s)	: R. Perlman
	Filename	: draft-ietf-trill-rbridge-protocol-07.txt
	Pages		: 84
	Date		: 2008-2-25
	
RBridges allow for optimal pair-wise forwarding with zero
   configuration, safe forwarding even during periods of temporary
   loops, and multipathing for both unicast and multicast traffic. They
   achieve these goals using IS-IS routing and encapsulation of traffic
   with a header that includes a hop count.

   RBridges are compatible with previous IEEE 802.1 bridges as well as
   current IPv4 and IPv6 routers and end nodes. They are as invisible to
   current IP routers as bridges are and, like routers, they terminate
   the bridge spanning tree protocol.

   The design supports VLANs and optimization of the distribution of
   multi-destination frames based on VLAN and IP derived multicast
   groups.  It also allows forwarding tables to be based on RBridge
   destinations (rather than end node destinations), which allows
   internal forwarding tables to be substantially smaller than in
   conventional bridge systems.

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