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Clarification of Segment ID Sub-TLV Length for RFC 8287
RFC 8690

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Document history

Date	By	Action
2026-05-20	(System)	Changed metadata: changed keywords to '['mpls']' from '[]'
2026-05-20	(System)	Metadata update from RFC Editor
2026-05-20	(System)	Changed author "A. Vainshtein": changed name from "Sasha Vainshtein" to "A. Vainshtein", cleared country (was "Israel"), changed order from "3" to "4"
2026-05-20	(System)	Changed author "F. Iqbal": changed name from "Faisal Iqbal" to "F. Iqbal", cleared country (was "Canada"), changed order from "2" to "3"
2026-05-20	(System)	Changed author "C. Pignataro": changed name from "Carlos Pignataro" to "C. Pignataro", cleared country (was "US"), changed order from "1" to "2"
2026-05-20	(System)	Changed author "N. Nainar": changed name from "Nagendra Nainar" to "N. Nainar", cleared country (was "US"), changed order from "0" to "1"
2026-05-20	(System)	Metadata update from RFC Editor
2019-12-11	(System)	Received changes through RFC Editor sync (created alias RFC 8690, changed title to 'Clarification of Segment ID Sub-TLV Length for RFC 8287', changed … Received changes through RFC Editor sync (created alias RFC 8690, changed title to 'Clarification of Segment ID Sub-TLV Length for RFC 8287', changed abstract to '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.', changed pages to 7, changed standardization level to Proposed Standard, changed state to RFC, added RFC published event at 2019-12-11, changed IESG state to RFC Published, created updates relation between draft-ietf-mpls-rfc8287-len-clarification and RFC 8287)
2019-12-11	(System)	RFC published