Rbridges: Base Protocol Specification

Document Type Replaced Internet-Draft (individual)
Authors Radia Perlman  , Joseph Touch 
Last updated 2008-04-16 (latest revision 2006-02-15)
Replaced by RFC 6325
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Intended RFC status (None)
Expired & archived
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Stream Stream state (No stream defined)
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IESG IESG state Replaced by draft-ietf-trill-rbridge-protocol
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


RBridges provide the ability to have an entire campus, with multiple physical links, look to IP like a single subnet. The design allows for zero configuration of switches within a campus, optimal pair-wise routing, safe forwarding even during periods of temporary loops, and the ability to cut down on ARP/ND traffic. The design also supports VLANs, and allows forwarding tables to be based on RBridge destinations (rather than endnode destinations), which allows internal routing tables to be substantially smaller than in conventional bridge systems.


Radia Perlman (radia@alum.mit.edu)
Joseph Touch (touch@isi.edu)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)