Invalid TLV Handling in IS-IS

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Publisher: IETF
Doc Type: Standard
Pages: 8
Abstract: The key to the extensibility of the Intermediate System to Intermediate System (IS-IS) protocol has been the handling of unsupported and/or invalid Type-Length-Value (TLV) tuples. Although there are explicit statements in existing specifications, deployment experience has shown that there are inconsistencies in the behavior when a TLV that is disallowed in a particular Protocol Data Unit (PDU) is received. This document discusses such cases and makes the correct behavior explicit in order to ensure that interoperability is maximized. This document updates RFCs 5305 and 6232.
Publication Date: 2020-09-01
Status Note: Proposed Standard
DOI: 10.17487/RFC8918
Link: https://doi.org/10.17487/RFC8918
Author(s): Les Ginsberg
Paul Wells
Tony Li
Tony Przygienda
Shraddha Hegde
Keyword(s): TLV, IS-IS

Latest version of IETF RFC 8918

Document Versions — IETF RFC 8918

▶ IETF RFC 8918 (2020-09-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

ISO.10589.2002 — 1 EXTERNAL
IANA, "IS-IS TLV Codepoints", <https://www.iana.org/assignments/isis-tlv-codepoints/>. EXTERNAL
IETF RFC 2119 [Active*]
IETF RFC 3563 [Active*]
IETF RFC 5304 [Active*]
IETF RFC 5305 [Active*]
RFC5310 — RFC5310 EXTERNAL
IETF RFC 6232 [Active*]
IETF RFC 6233 [Active*]
IETF RFC 8174 [Active*]

Bibliographic Reference(s)

RFC3359 — RFC3359 EXTERNAL
RFC7356 — RFC7356 EXTERNAL

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doi: 10.17487/RFC8918
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<cite id="bib-rfc8918">IETF RFC 8918</cite>, Invalid TLV Handling in IS-IS
<span class="doi">10.17487/RFC8918</span>
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