TTL Procedures for SR-TE Paths in Label Switched Path Traceroute Mechanisms

Document Type Expired Internet-Draft (individual)
Authors Kapil Arora  , Shraddha Hegde  , Sam Aldrin  , Stephane Litkowski  , Muhammad Durrani 
Last updated 2019-08-25 (latest revision 2019-02-21)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Segment routing supports the creation of explicit paths using adjacency-sids, node-sids, and anycast-sids. The SR-TE paths are built by stacking the labels that represent the nodes and links in the explicit path. A very useful Operations And Maintenance requirement is to be able to trace these paths as defined in [RFC8029]. This document specifies a uniform mechanism to support MPLS traceroute for the SR-TE paths when the nodes in the network are following uniform mode or short-pipe mode [RFC3443].


Kapil Arora (
Shraddha Hegde (
Sam Aldrin (
Stephane Litkowski (
Muhammad Durrani (

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