RFC 5036 - LDP Specification
- Status: Standards Track
- Published: October 2007
- Stream: IETF
- Obsoletes: RFC 3036
- Errata: No Errata
Status of This Memo
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.
Abstract
The architecture for Multiprotocol Label Switching (MPLS) is described in RFC 3031. A fundamental concept in MPLS is that two Label Switching Routers (LSRs) must agree on the meaning of the labels used to forward traffic between and through them. This common understanding is achieved by using a set of procedures, called a label distribution protocol, by which one LSR informs another of label bindings it has made. This document defines a set of such procedures called LDP (for Label Distribution Protocol) by which LSRs distribute labels to support MPLS forwarding along normally routed paths.
Table of Contents
- 1. LDP Overview
- 2. LDP Operation
- 3. Protocol Specification
- 3.4. TLV Encodings for Commonly Used Parameters
- 3.5. LDP Messages
- 3.5.1. Notification Message
- 3.5.2. Hello Message
- 3.5.3. Initialization Message
- 3.5.4. KeepAlive Message
- 3.5.5. Address Message
- 3.5.6. Address Withdraw Message
- 3.5.7. Label Mapping Message
- 3.5.8. Label Request Message
- 3.5.9. Label Abort Request Message
- 3.5.10. Label Withdraw Message
- 3.5.11. Label Release Message
- 3.6. Messages and TLVs for Extensibility
- 3.7. Message Summary
- 3.8. TLV Summary
- 3.9. Status Code Summary
- 3.10. Well-Known Numbers
- 4. IANA Considerations
- 5. Security Considerations
- 6. Areas for Future Study
- 7. Changes from RFC 3036
- 8. Acknowledgments
- 9. References
- Appendix A. LDP Label Distribution Procedures
- A.1. Handling Label Distribution Events
- A.2. Common Label Distribution Procedures
Editors' Addresses
Loa Andersson Acreo AB Isafjordsgatan 22 Kista, Sweden EMail: [email protected] [email protected]
Ina Minei Juniper Networks 1194 N. Mathilda Ave. Sunnyvale, CA 94089 EMail: [email protected]
Bob Thomas Cisco Systems, Inc. 1414 Massachusetts Ave Boxborough, MA 01719 EMail: [email protected]
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