A new Request for Comments is now available in online RFC libraries.
RFC 5171
Title: Cisco Systems UniDirectional Link Detection
(UDLD) Protocol
Author: M. Foschiano
Status: Informational
Date: April 2008
Mailbox: foschia@cisco.com
Pages: 13
Characters: 28149
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-foschiano-udld-03.txt
URL: http://www.rfc-editor.org/rfc/rfc5171.txt
This document describes a Cisco Systems protocol that can be used to
detect and disable unidirectional Ethernet fiber or copper links
caused, for instance, by mis-wiring of fiber strands, interface
malfunctions, media converters' faults, etc. It operates at Layer 2
in conjunction with IEEE 802.3's existing Layer 1 fault detection
mechanisms.
This document explains the protocol objectives and applications,
illustrates the specific premises the protocol was based upon, and
describes the protocol architecture and related deployment issues to
serve as a possible base for future standardization. This memo provides
information for the Internet community.
INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
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