Clarification of Segment ID Sub-TLV Length for RFC 8287
RFC 8690, “Clarification of Segment ID Sub-TLV Length for RFC 8287”, is a Proposed Standard document published in December 2019 by N. Nainar, C. Pignataro, F. Iqbal, A. Vainshtein. It updates RFC 8287. The canonical text is published by the RFC Editor.
Abstract
RFC 8287 defines the extensions to perform LSP Ping and Traceroute for Segment Routing IGP-Prefix and IGP-Adjacency Segment Identifiers (SIDs) with the MPLS data plane. RFC 8287 proposes three Target Forwarding Equivalence Class (FEC) Stack sub-TLVs. While RFC 8287 defines the format and procedure to handle those sub-TLVs, it does not sufficiently clarify how the length of the Segment ID sub-TLVs should be computed to be included in the Length field of the sub-TLVs. This ambiguity has resulted in interoperability issues.
This document updates RFC 8287 by clarifying the length of each of the Segment ID sub-TLVs defined in RFC 8287.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 8690 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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