LSP Ping/Traceroute for Prefix SID in Presence of Multi-Algorithm/Multi- Topology Networks
draft-iqbal-spring-mpls-ping-algo-02

Document Type Expired Internet-Draft (individual)
Authors Zafar Ali  , Carlos Pignataro  , Faisal Iqbal 
Last updated 2021-08-27 (latest revision 2021-02-23)
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This Internet-Draft is no longer active.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-iqbal-spring-mpls-ping-algo-02.txt

Abstract

[RFC8287] defines the extensions to MPLS LSP Ping and Traceroute for Segment Routing IGP-Prefix and IGP-Adjacency Segment Identifier (SIDs) with an MPLS data plane. The machinery defined in [RFC8287] works well in single topology, single algorithm deployments where each Prefix SID is only associated with a single IP prefix. In multi-topology networks, or networks deploying multiple algorithms for the same IP Prefix, MPLS echo request needs to carry additional information in the Target FEC Stack sub-TLVs to properly validate IGP Prefix SID. This document updates [RFC8287] by modifying IPv4 and IPv6 IGP-Prefix Segment ID FEC sub-TLVs to also include algorithm identification while maintaining backwards compatibility. This document also introduces new Target FEC Stack sub-TLVs for Prefix SID validation in multi-topology networks.

Authors

Zafar Ali (zali@cisco.com)
Carlos Pignataro (cpignata@cisco.com)
Faisal Iqbal (faisal.ietf@gmail.com)

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