Requirements for GMPLS Applications of PCE
RFC 7025
Document | Type | RFC - Informational (September 2013; No errata) | |
---|---|---|---|
Authors | Tomohiro Otani , Kenichi Ogaki , Diego Caviglia , Fatai Zhang , Cyril Margaria | ||
Last updated | 2015-10-14 | ||
Replaces | draft-otani-pce-gmpls-aps-req | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Julien Meuric | ||
Shepherd write-up | Show (last changed 2013-05-21) | ||
IESG | IESG state | RFC 7025 (Informational) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Adrian Farrel | ||
Send notices to | (None) | ||
IANA | IANA review state | IANA OK - No Actions Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) T. Otani Request for Comments: 7025 K. Ogaki Category: Informational KDDI ISSN: 2070-1721 D. Caviglia Ericsson F. Zhang Huawei Technologies C. Margaria Coriant R&D GmbH September 2013 Requirements for GMPLS Applications of PCE Abstract The initial effort of the PCE (Path Computation Element) WG focused mainly on MPLS. As a next step, this document describes functional requirements for GMPLS applications of PCE. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7025. Otani, et al. Informational [Page 1] RFC 7025 Reqs for GMPLS Apps of PCE September 2013 Copyright Notice Copyright (c) 2013 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. GMPLS Applications of PCE . . . . . . . . . . . . . . . . . . 3 2.1. Path Computation in GMPLS Networks . . . . . . . . . . . . 3 2.2. Unnumbered Interface . . . . . . . . . . . . . . . . . . . 5 2.3. Asymmetric Bandwidth Path Computation . . . . . . . . . . 5 3. Requirements for GMPLS Applications of PCE . . . . . . . . . . 6 3.1. Requirements on Path Computation Request . . . . . . . . . 6 3.2. Requirements on Path Computation Reply . . . . . . . . . . 7 3.3. GMPLS PCE Management . . . . . . . . . . . . . . . . . . . 8 4. Security Considerations . . . . . . . . . . . . . . . . . . . 8 5. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 9 6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.1. Normative References . . . . . . . . . . . . . . . . . . . 9 6.2. Informative References . . . . . . . . . . . . . . . . . . 11 1. Introduction The initial effort of the PCE (Path Computation Element) WG focused mainly on solving the path computation problem within a domain or over different domains in MPLS networks. As with MPLS, service providers (SPs) have also come up with requirements for path computation in GMPLS-controlled networks [RFC3945], such as those based on Wavelength Division Multiplexing (WDM), Time Division Multiplexing (TDM), or Ethernet. [RFC4655] and [RFC4657] discuss the framework and requirements for PCE on both packet MPLS networks and GMPLS-controlled networks. This document complements those RFCs by providing considerations of GMPLS applications in the intradomain and interdomain networking environments and indicating a set of requirements for the extended definition of PCE-related protocols. Otani, et al. Informational [Page 2] RFC 7025 Reqs for GMPLS Apps of PCE September 2013 Note that the requirements for interlayer and inter-area traffic engineering (TE) described in [RFC6457] and [RFC4927] are outside of the scope of this document. Constrained Shortest Path First (CSPF) computation within a domain or over domains for signaling GMPLS Label Switched Paths (LSPs) is usually more stringent than that of MPLS TE LSPs [RFC4216], because the additional constraints, e.g., interface switching capability,Show full document text