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Detecting and Reacting to Failures of the Full Mesh in IPLS and VPLS

Document Type Expired Internet-Draft (individual)
Author Eric C. Rosen
Last updated 2004-09-30
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at:


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.


Eric C. Rosen

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