Bidirectional Forwarding Detection (BFD) in Segment Routing Networks Using MPLS Dataplane
draft-ietf-spring-bfd-01

The information below is for an old version of the document
Document Type Expired Internet-Draft (spring WG)
Authors Greg Mirsky  , Jeff Tantsura  , Ilya Varlashkin  , Mach Chen  , Jiang Wenying 
Last updated 2021-09-23 (latest revision 2021-03-22)
Replaces draft-mirsky-spring-bfd
Stream Internet Engineering Task Force (IETF)
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-ietf-spring-bfd-01.txt

Abstract

Segment Routing (SR) architecture leverages the paradigm of source routing. It can be realized in the Multiprotocol Label Switching (MPLS) network without any change to the data plane. A segment is encoded as an MPLS label, and an ordered list of segments is encoded as a stack of labels. Bidirectional Forwarding Detection (BFD) is expected to monitor any existing path between systems. This document defines how to use Label Switched Path Ping to bootstrap a BFD session, control an SR Policy in the reverse direction of the SR-MPLS tunnel, and applicability of BFD Demand mode in the SR-MPLS domain. Also, the document describes the use of BFD Echo with BFD Control packet payload.

Authors

Greg Mirsky (gregimirsky@gmail.com)
Jeff Tantsura (jefftant.ietf@gmail.com)
Ilya Varlashkin (ilya@nobulus.com)
Mach Chen (mach.chen@huawei.com)
Jiang Wenying (jiangwenying@chinamobile.com)

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