Diffserv-Aware Class-Type Object for the Path Computation Element Communication Protocol
RFC 5455
Document | Type |
RFC - Proposed Standard
(March 2009; Errata)
Was draft-ietf-pce-dste (pce WG)
|
|
---|---|---|---|
Authors | Kenji Kumaki , Jon Parker , Sami Boutros , Siva Sivabalan | ||
Last updated | 2020-01-21 | ||
Replaces | draft-sivabalan-pce-dste | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5455 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Ross Callon | ||
Send notices to | (None) |
Network Working Group S. Sivabalan, Ed. Request for Comments: 5455 J. Parker Category: Standards Track S. Boutros Cisco Systems, Inc. K. Kumaki KDDI R&D Laboratories, Inc. March 2009 Diffserv-Aware Class-Type Object for the Path Computation Element Communication Protocol 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. Copyright Notice Copyright (c) 2009 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 in effect on the date of publication of this document (http://trustee.ietf.org/license-info). Please review these documents carefully, as they describe your rights and restrictions with respect to this document. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Abstract This document specifies a CLASSTYPE object to support Diffserv-Aware Traffic Engineering (DS-TE) where path computation is performed with the aid of a Path Computation Element (PCE). Sivabalan, et al. Standards Track [Page 1] RFC 5455 DS Aware CT Object for PCEP March 2009 Table of Contents 1. Introduction ....................................................2 1.1. Conventions Used in This Document ..........................3 2. Terminology .....................................................3 3. CLASSTYPE Object ................................................3 3.1. Object Definition ..........................................4 3.2. Path Computation Request Message with CLASSTYPE Object .....4 3.3. Processing CLASSTYPE Object ................................5 3.4. Determination of Traffic Engineering Class (TE-Class) ......6 3.5. Significance of Class-Type and TE-Class ....................6 3.6. Error Codes for CLASSTYPE Object ...........................6 4. Security Considerations .........................................7 5. IANA Considerations .............................................7 6. Acknowledgments .................................................7 7. References ......................................................8 7.1. Normative References .......................................8 7.2. Informative References .....................................8 1. Introduction [RFC5440] specifies the Path Computation Element Communication Protocol (PCEP) for communications between a Path Computation Client (PCC) and a Path Computation Element (PCE), or between two PCEs, in compliance with [RFC4657]. Diffserv-aware MPLS Traffic Engineering (DS-TE) addresses the fundamental requirement to be able to enforce different bandwidth constraints for different classes of traffic. It describes mechanisms to achieve per-class traffic engineering, rather than on an aggregate basis across all classes by enforcing Bandwidth Constraints (BCs) on different classes. Requirements for DS-TE and the associated protocol extensions are specified in [RFC3564] and [RFC4124], respectively. As per [RFC4657], PCEP must support traffic Class-Type as an MPLS- TE-specific constraint. However, in the present form, PCEP [RFC5440] does not have the capability to specify the Class-Type in the path computation request. In this document, we define a new PCEP object called CLASSTYPE, which carries the Class-Type of the TE LSP in the path computation request. During path computation, a PCE uses the Class-Type to identify the bandwidth constraint of the TE LSP. Sivabalan, et al. Standards Track [Page 2]Show full document text