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A Unified Control Channel for Pseudowires

Document type: Replaced Internet-Draft (pals WG)
Document stream: IETF
Last updated: 2014-11-16 (latest revision 2014-09-02)
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

IETF State: WG Document Jun 2015
Document shepherd: No shepherd assigned

IESG State: Replaced by draft-ietf-pals-vccv-for-gal
Responsible AD: (None)
Send notices to: No addresses provided

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


This document describes a unified mode of operation for Virtual Circuit Connectivity Verification (VCCV), which provides a control channel that is associated with a pseudowire (PW). VCCV applies to all supported access circuit and transport types currently defined for PWs, as well as those being transported by the MPLS Transport Profile. This new mode is intended to augment those described in RFC5085. It describes new rules requiring this mode to be used as the default/mandatory mode of operation for VCCV. The older VCCV types will remain optional.


Tom Nadeau <>
Luca Martini <>
Stewart Bryant <>

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