Neighbor Unreachability Detection Is Too Impatient

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Publisher: IETF
Doc Type: Standard
Pages: 8
Abstract: IPv6 Neighbor Discovery includes Neighbor Unreachability Detection. That function is very useful when a host has an alternative neighbor -- for instance, when there are multiple default routers -- since it allows the host to switch to the alternative neighbor in a short time. By default, this time is 3 seconds after the node starts probing. However, if there are no alternative neighbors, this timeout behavior is far too impatient. This document specifies relaxed rules for Neighbor Discovery retransmissions that allow an implementation to choose different timeout behavior based on whether or not there are alternative neighbors. This document updates RFC 4861.
Publication Date: 2014-01-01
Status Note: Proposed Standard
DOI: 10.17487/RFC7048
Link: https://doi.org/10.17487/RFC7048
Author(s): Erik Nordmark
Igor Gashinsky
Keyword(s): 6MAN, IPv6, Neighbor Discovery

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Document Versions — IETF RFC 7048

▶ IETF RFC 7048 (2014-01-01)

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IETF RFC 2119 [Active*]
IETF RFC 3971 [Active*]
IETF RFC 4861 [Active*]

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IETF RFC 826 [Active*]
RFC6583 — RFC6583 EXTERNAL

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Referenced By

IETF RFC 8929 [Active*]