Applicability Statement for Traffic Engineering with MPLS
RFC 3346
Document | Type | RFC - Informational (August 2002; No errata) | |
---|---|---|---|
Authors | Blaine Christian , Dave Cooper , Alan Hannan , Vijay Gill , Daniel Awduche , Wai Lai , Jim Boyle | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 3346 (Informational) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Bert Wijnen | ||
IESG note |
Approved Responsible: RFC Editor |
||
Send notices to | (None) |
Network Working Group J. Boyle Request for Comments: 3346 PD Nets Category: Informational V. Gill AOL Time Warner, Inc. A. Hannan RoutingLoop D. Cooper Global Crossing D. Awduche Movaz Networks B. Christian Worldcom W.S. Lai AT&T August 2002 Applicability Statement for Traffic Engineering with MPLS Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2002). All Rights Reserved. Abstract This document describes the applicability of Multiprotocol Label Switching (MPLS) to traffic engineering in IP networks. Special considerations for deployment of MPLS for traffic engineering in operational contexts are discussed and the limitations of the MPLS approach to traffic engineering are highlighted. Boyle, et al. Informational [Page 1] RFC 3346 Applicability Statement for Traffic Engineering August 2002 Table of Contents 1. Introduction....................................................2 2. Technical Overview of ISP Traffic Engineering...................3 3. Applicability of Internet Traffic Engineering...................4 3.1 Avoidance of Congested Resources................................4 3.2 Resource Utilization in Network Topologies with Parallel Links..5 3.3 Implementing Routing Policies using Affinities..................5 3.4 Re-optimization After Restoration...............................6 4. Implementation Considerations...................................6 4.1 Architectural and Operational Considerations....................6 4.2 Network Management Aspects......................................7 4.3 Capacity Engineering Aspects....................................8 4.4 Network Measurement Aspects.....................................8 5. Limitations.....................................................9 6. Conclusion.....................................................11 7. Security Considerations........................................11 8. References.....................................................11 9. Acknowledgments................................................12 10. Authors' Addresses.............................................13 11. Full Copyright Statement.......................................14 1. Introduction It is generally acknowledged that one of the most significant initial applications of Multiprotocol Label Switching (MPLS) is traffic engineering (TE) [1][2] in IP networks. A significant community of IP service providers have found that traffic engineering of their networks can have tactical and strategic value [2, 3, 4]. To support the traffic engineering application, extensions have been specified for Interior Gateway Protocols (IGP) IS-IS [5] and OSPF [6], and to signaling protocols RSVP [7] and LDP [8]. The extensions for IS-IS, OSPF, and RSVP have all been developed and deployed in large scale in many networks consisting of multi-vendor equipment. This document discusses the applicability of TE to Internet service provider networks, focusing on the MPLS-based approach. It augments the existing protocol applicability statements and, in particular, relates to the operational applicability of RSVP-TE [9]. Special considerations for deployment of MPLS in operational contexts are discussed and the limitations of this approach to traffic engineering are highlighted. Boyle, et al. Informational [Page 2] RFC 3346 Applicability Statement for Traffic Engineering August 2002 2. Technical Overview of ISP Traffic Engineering Traffic engineering (TE) is generally concerned with the performance optimization of operational networks [2]. In contemporary practice, TE means mapping IP traffic flows onto the existing physical network topology in the most effective way to accomplish desired operationalShow full document text