[rbridge] TRILL rbridge architecture submitted
touch at ISI.EDU
Fri Nov 18 11:49:14 PST 2005
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The rbridge architecture doc has been posted to the Internet drafts.
The only change was the reference to the P&AS doc, and that this document
is currently considered the product of a few authors rather than an
editor (that decision can be revised if accepted as a WG doc).
TRILL WG J. Touch
Internet Draft USC/ISI
Expires: May 2006 R. Perlman
November 18, 2005
The Architecture of an RBridge Solution to TRILL
RBridges are link layer (L2) devices that use routing protocols as a
control plane. They combine the link layer ability to allow hosts to
reattach without renumbering with network layer routing benefits.
RBridges use existing link state routing to provide higher internal
cross-section bandwidth, faster convergence under reconfiguration,
and more robustness to link interruption than an equivalent set of
conventional bridges using existing spanning tree forwarding. They
are intended to apply to similar L2 network sizes as conventional
bridges and are intended to be backward compatible with those bridges
as both ingress/egress and transit. They also attempt to retain as
much 'plug and play' as is already available in existing bridges.
This document proposes the RBridge system as a solution to the TRILL
problem. It also defines the RBridge architecture, presents its
terminology, and describes its basic components and desired behavior.
A separate document specifies the protocols and mechanisms that
satisfy the architecture presented herein.
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