Cisco Systems UniDirectional Link Detection (UDLD) Protocol
RFC 5171
Revision differences
Document history
| Date | By | Action |
|---|---|---|
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2026-05-20
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(System) | Changed metadata: changed keywords to '['Ethernet', 'switches', 'LAN', 'IEEE', '802', 'spanning tree', 'STP', 'FEFI', 'autonegotiation']' from '[]' |
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2026-05-20
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(System) | Metadata update from RFC Editor |
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2026-05-20
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(System) | Changed author "M. Foschiano": changed name from "Marco Foschiano" to "M. Foschiano", cleared country (was "Italy"), changed order from "0" to "1" |
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2026-05-20
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(System) | Metadata update from RFC Editor |
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2018-12-20
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(System) | Received changes through RFC Editor sync (changed abstract to 'This document describes a Cisco Systems protocol that can be used to detect and disable unidirectional … Received changes through RFC Editor sync (changed abstract to '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.') |
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2015-10-14
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(System) | Notify list changed from foschia@cisco.com to (None) |
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2008-04-24
|
Amy Vezza | State Changes to RFC Published from RFC Ed Queue by Amy Vezza |
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2008-04-24
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Amy Vezza | [Note]: 'RFC 5171' added by Amy Vezza |
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2008-04-23
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(System) | RFC published |