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RFC 6372
MPLS Transport Profile (MPLS-TP) Survivability Framework,September 2011
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DOI: https://doi.org/10.17487/RFC6372
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Abstract
Network survivability is the ability of a network to recover trafficdelivery following failure or degradation of networkresources. Survivability is critical for the delivery of guaranteednetwork services, such as those subject to strict Service LevelAgreements (SLAs) that place maximum bounds on the length of timethat services may be degraded or unavailable.
The Transport Profile of Multiprotocol Label Switching (MPLS-TP) is apacket-based transport technology based on the MPLS data plane thatreuses many aspects of the MPLS management and control planes.
This document comprises a framework for the provision of survivabilityin an MPLS-TP network; it describes recovery elements, types, methods,and topological considerations. To enable data-plane recovery,survivability may be supported by the control plane, management plane,and by Operations, Administration, and Maintenance (OAM) functions.This document describes mechanisms for recovering MPLS-TP LabelSwitched Paths (LSPs). A detailed description of pseudowire recoveryin MPLS-TP networks is beyond the scope of this document.
This document is a product of a joint Internet Engineering Task Force(IETF) / International Telecommunication Union TelecommunicationStandardization Sector (ITU-T) effort to include an MPLS TransportProfile within the IETF MPLS and Pseudowire Emulation Edge-to-Edge (PWE3)architectures to support the capabilities and functionalities of apacket-based transport network as defined by the ITU-T.
This document is not an Internet Standards Track specification; it ispublished for informational purposes.
For the definition ofStatus,seeRFC 2026.
For the definition ofStream, seeRFC 8729.