A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Detecting and Reacting to Failures of the
Full Mesh in IPLS and VPLS
Author(s) : E. Rosen
Filename : draft-rosen-l2vpn-mesh-failure-02.txt
Pages : 8
Date : 2004-9-30
Certain L2VPN architectures [IPLS, VPLS] rely on there being a full
mesh of pseudowires [PWE3-ARCH] among a set of entities. This mesh
is used to provide a 'LAN-like' service among the entities. If one
or more of these pseudowires is absent, so that there is not really a
full mesh, various higher layers (from routing to bridge control
protocols) that expect a LAN-like service may fail to work as
expected. Therefore it is desirable to have procedures that enable
the pseudowire endpoints to determine automatically whether there is
really a full mesh or not. It is also desirable to have procedures
that cause the L2VPNs to adapt to pseudowire failures. This document
proposes a set of procedures to meet these goals. Detailed protocol
encodings are not present, but will be added in future versions.
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