RFC 5443: LDP IGP Synchronization
In plain English — editorial summary, not part of the RFC
In certain networks, there is dependency on the edge-to-edge Label Switched Paths (LSPs) setup by the Label Distribution Protocol (LDP), e.g., networks that are used for Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) applications. For such applications, it is not possible to rely on Internet Protocol (IP) forwarding if the MPLS LSP is not operating appropriately. Blackholing of labeled traffic can occur in situations where the Interior Gateway Protocol (IGP) is operational on a link on which LDP is not. While the link could still be used for IP forwarding, it is not useful for MPLS forwarding, for example, MPLS VPN applications or Border Gateway Protocol (BGP) route-free cores. This document describes a mechanism to avoid traffic loss due to this condition without introducing any protocol changes. This memo provides information for the Internet community.
Document record
- Document ID
- RFC5443
- Published
- March 2009
- Authors
- M. Jork; A. Atlas; L. Fang
- Status
- INFORMATIONAL
- Stream
- IETF
- Area
- rtg
- Pages
- 7
- Also known as
- —
- Updated by:
- RFC 6138
Topics
Referenced by
One later RFC formally updates or obsoletes part of this document.
Related documents
Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.
- RFC 5073IGP Routing Protocol Extensions for Discovery of Traffic Engineering Node CapabilitiesCurrent
December 2007
- RFC 5919Signaling LDP Label Advertisement CompletionCurrent
August 2010
- RFC 4561Definition of a Record Route Object (RRO) Node-Id Sub-ObjectCurrent
June 2006
- RFC 3815Definitions of Managed Objects for the Multiprotocol Label Switching (MPLS), Label Distribution Protocol (LDP)Current
June 2004
- RFC 3719Recommendations for Interoperable Networks using Intermediate System to Intermediate System (IS-IS)Current
February 2004
- RFC 7307LDP Extensions for Multi-TopologyUpdated
July 2014
- RFC 3479Fault Tolerance for the Label Distribution Protocol (LDP)Current
February 2003
- RFC 3478Graceful Restart Mechanism for Label Distribution ProtocolCurrent
February 2003
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
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