Bidirectional Forwarding Detection (BFD) in Segment Routing Networks Using MPLS Dataplane
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
|Authors||Greg Mirsky , Jeff Tantsura , Ilya Varlashkin , Mach Chen , Jiang Wenying|
|Last updated||2021-09-23 (Latest revision 2021-03-22)|
|RFC stream||Internet Engineering Task Force (IETF)|
|Additional resources||Mailing list discussion|
|Stream||WG state||WG Document|
|Send notices to||(None)|
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
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.
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