RFC 9792 on Prefix Flag Extension for OSPFv2 and OSPFv3
rfc-editor@rfc-editor.org Thu, 12 June 2025 18:34 UTC
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Subject: RFC 9792 on Prefix Flag Extension for OSPFv2 and OSPFv3
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A new Request for Comments is now available in online RFC libraries.
RFC 9792
Title: Prefix Flag Extension for OSPFv2
and OSPFv3
Author: R. Chen,
D. Zhao,
P. Psenak,
K. Talaulikar,
L. Gong
Status: Standards Track
Stream: IETF
Date: June 2025
Mailbox: chen.ran@zte.com.cn,
zhao.detao@zte.com.cn,
ppsenak@cisco.com,
ketant.ietf@gmail.com,
gongliyan@chinamobile.com
Pages: 7
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-lsr-ospf-prefix-extended-flags-07.txt
URL: https://www.rfc-editor.org/info/rfc9792
DOI: 10.17487/RFC9792
Each OSPF prefix can be advertised with an 8-bit field to indicate
specific properties of that prefix. However, all the OSPFv3 Prefix
Options bits have already been assigned, and only a few bits remain
unassigned in the Flags field of the OSPFv2 Extended Prefix TLV.
This document solves this problem by defining a variable-length
Prefix Extended Flags sub-TLV for OSPF. This sub-TLV is applicable to
OSPFv2 and OSPFv3.
This document is a product of the Link State Routing Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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