Multi Protocol Label Switching Label Distribution Protocol Query Message Description

Document Type Expired Internet-Draft (mpls WG)
Authors Peter Ashwood-Smith  , Antonela Paraschiv  , David Allan 
Last updated 2015-10-14 (latest revision 2003-06-30)
Stream Internet Engineering Task Force (IETF)
Intended RFC status Proposed Standard
Expired & archived
pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired (IESG: Dead)
Action Holders
Consensus Boilerplate Unknown
Telechat date
Responsible AD Alex Zinin
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the encoding and procedures for three new Label Distribution Protocol (LDP) messages: Query Message, Query- Reply Message and Partial Query-Reply Message. A Label Edge Router (LER) sends a Query message when it needs to find out information about an established Label Switched Path (LSP). The Query message can be used for LDP LSPs as well as for Constraint-Based Label Switched Paths (CR-LSPs). The queried data is encoded into the Query-Reply messages.


Peter Ashwood-Smith (
Antonela Paraschiv (
David Allan (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)