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IETF RFC 6805
[ACTIVE]

The Application of the Path Computation Element Architecture to the Determination of a Sequence of Domains in MPLS and GMPLS

Metadata

Publisher
IETF
Doc Type
Informational
Pages
33
Abstract
Computing optimum routes for Label Switched Paths (LSPs) across multiple domains in MPLS Traffic Engineering (MPLS-TE) and GMPLS networks presents a problem because no single point of path computation is aware of all of the links and resources in each domain. A solution may be achieved using the Path Computation Element (PCE) architecture. Where the sequence of domains is known a priori, various techniques can be employed to derive an optimum path. If the domains are simply connected, or if the preferred points of interconnection are also known, the Per-Domain Path Computation technique can be used. Where there are multiple connections between domains and there is no preference for the choice of points of interconnection, the Backward-Recursive PCE-based Computation (BRPC) procedure can be used to derive an optimal path. This document examines techniques to establish the optimum path when the sequence of domains is not known in advance. The document shows how the PCE architecture can be extended to allow the optimum sequence of domains to be selected, and the optimum end-to-end path to be derived through the use of a hierarchical relationship between domains. This document is not an Internet Standards Track specification; it is published for informational purposes.
Publication Date
2012-11-01
Status Note
Informational
DOI
10.17487/RFC6805
Link
https://doi.org/10.17487/RFC6805
Author(s)
Daniel King
Adrian Farrel
Latest version of IETF RFC 6805

Document Versions — IETF RFC 6805

  • ▶ IETF RFC 6805 (2012-11-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

Bibliographic Reference(s)

  • King, D., Meuric, J., Dugeon, O., Zhao, Q., Gonzalez de Dios, O., and F. Chico, "Applicability of the Path Computation Element to Inter-Area and Inter-AS MPLS and GMPLS Traffic Engineering", Work in Progress, January 2012. EXTERNAL
  • Koushik, A., Emile, S., Zhao, Q., King, D., and J. Hardwick, "PCE communication protocol (PCEP) Management Information Base", Work in Progress, July 2012. EXTERNAL
  • Gredler, H., Medved, J., Previdi, S., Farrel, A., and S. Ray, "North-Bound Distribution of Link-State and TE Information using BGP", Work in Progress, October 2012. EXTERNAL
  • IETF RFC 4105 [Active*]
  • IETF RFC 4216 [Active*]
  • IETF RFC 4726 [Active*]
  • IETF RFC 5316 [Superseded*]
  • IETF RFC 5376 [Active*]
  • IETF RFC 5392 [Active*]
  • IETF RFC 5541 [Active*]
  • T-REC-G.7715.2002 — G-7715 EXTERNAL
  • T-REC-G.7715.2007 — G-7715-2 EXTERNAL
  • T-REC-G.8080 — G8080 EXTERNAL
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Plain text (ISO 690 compliant)

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IETF RFC 6805, The Application of the Path Computation Element Architecture to the Determination of a Sequence of Domains in MPLS and GMPLS. Available at https://doi.org/10.17487/RFC6805
Snippet:
IETF RFC 6805, The Application of the Path Computation Element Architecture to the Determination of a Sequence of Domains in MPLS and GMPLS. Available at https://doi.org/10.17487/RFC6805

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IETF RFC 6805, The Application of the Path Computation Element Architecture to the Determination of a Sequence of Domains in MPLS and GMPLS. Available at https://doi.org/10.17487/RFC6805
Snippet:
<span class="citation"><cite>IETF RFC 6805</cite>, The Application of the Path Computation Element Architecture to the Determination of a Sequence of Domains in MPLS and GMPLS. Available at <a href="https://doi.org/10.17487/RFC6805" target="_blank" rel="noopener">https://doi.org/10.17487/RFC6805</a></span>

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Preview:
IETF RFC 6805, The Application of the Path Computation Element Architecture to the Determination of a Sequence of Domains in MPLS and GMPLS
doi: 10.17487/RFC6805
url: https://doi.org/10.17487/RFC6805
Snippet:
<li>
<cite id="bib-rfc6805">IETF RFC 6805</cite>, The Application of the Path Computation Element Architecture to the Determination of a Sequence of Domains in MPLS and GMPLS
<span class="doi">10.17487/RFC6805</span>
</li>

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