RFC 8770

Host Router Support for OSPFv2, April 2020

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Status:
PROPOSED STANDARD
Updates:
RFC 6987
Authors:
K. Patel
P. Pillay-Esnault
M. Bhardwaj
S. Bayraktar
Stream:
IETF
Source:
lsr (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC8770

Discuss this RFC: Send questions or comments to lsr@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF


Abstract

The Open Shortest Path First Version 2 (OSPFv2) protocol does not have a mechanism for a node to repel transit traffic if it is on the shortest path. This document defines a bit called the Host-bit (H-bit). This bit enables a router to advertise that it is a non-transit router. This document also describes the changes needed to support the H-bit in the domain. In addition, this document updates RFC 6987 to advertise Type 2 External and Not-So-Stubby Area (NSSA) Link State Advertisements (LSAs) (RFC 3101) with a high cost in order to repel traffic effectively.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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