Proactive Connectivity Verification, Continuity Check, and Remote Defect Indication for the MPLS Transport Profile
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From: The IESG <email@example.com> To: IETF-Announce <firstname.lastname@example.org> Cc: RFC Editor <email@example.com>, mpls mailing list <firstname.lastname@example.org>, mpls chair <email@example.com> Subject: Protocol Action: 'Proactive Connectivity Verification, Continuity Check and Remote Defect indication for MPLS Transport Profile' to Proposed Standard (draft-ietf-mpls-tp-cc-cv-rdi-06.txt) The IESG has approved the following document: - 'Proactive Connectivity Verification, Continuity Check and Remote Defect indication for MPLS Transport Profile' (draft-ietf-mpls-tp-cc-cv-rdi-06.txt) as a Proposed Standard This document is the product of the Multiprotocol Label Switching Working Group. The IESG contact persons are Adrian Farrel and Stewart Bryant. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-mpls-tp-cc-cv-rdi/
Technical Summary MPLS LSPs (emulating traditional transport circuits) are expected to deliver the same the capabilities for monitoring cnnections as in earlier types of transport networks. This document describes and specifies, as required in RFC 5860, Continuity Check (CC), proactive Connection Verfication (CV), and Remoted Defect Indication (RDI). This document describes the use of the Bidirectional Forwarding Detection protocol (BFD) for for these functions for pseudowires (PWs), Label Switched Paths (LSPs), and Sub-Path Maintenance Entities (SPMEs) between two Maintenance Entity Group End Points (MEPs). CC and Proactive CV are functions used to detect loss of continuity (LOC), and unintended connectivity between two MEPs. RDI is an indicator that is transmitted by a MEP to communicate to its peer MEP that a signal fail condition exists. This document specifies the BFD extension and behavior to satisfy the CC, the proactive CV monitoring, and the RDI functional requirements for both co-routed and associated bi-directional LSPs. The document describes a number of encapsulations. Procedures for uni-directional LSPs are for further study. The mechanisms specified in this document are restricted to BFD asynchronous mode. Working Group Summary This document is a MPLS working group document, and part of the joint IETF / ITU-T MPLS-TP project. It has been reviewed in both organizations and there is a solid support for the document. The document was discussed and last-called in the MPLS and BFD WGs. Document Quality The document is well reviewed in the MPLS working group,the ITU-T and the BFD working group. A number of vendors have committed to implement and there is believed to be at least one early implementation. Personnel Loa Andersson (firstname.lastname@example.org) is the Document Shepherd. Adrian Farrel (email@example.com) is the Responsible AD RFC Editor Note Please try to set the figures so that they don't break over a page.