Conveying Vendor-Specific Constraints in the Path Computation Element Communication Protocol (RFC7470)
Original Publication Date: 2015-Mar-01
Included in the Prior Art Database: 2015-Mar-04
Internet Society Requests For Comment (RFCs)
F. Zhang: AUTHOR [+2]
A Path Computation Element (PCE) is an entity (component, application, or network node) that is capable of computing a network path or route based on a network graph and applying computational constraints. An architecture for the use of PCEs is defined in [RFC4655].
Internet Engineering Task Force (IETF) F. Zhang Request for Comments: 7470 Huawei Obsoletes: 7150 A. Farrel Category: Standards Track Juniper Networks ISSN: 2070-1721 March 2015
Conveying Vendor-Specific Constraints in the Path Computation Element Communication Protocol
The Path Computation Element Communication Protocol (PCEP) is used to convey path computation requests and responses both between Path Computation Clients (PCCs) and Path Computation Elements (PCEs) and between cooperating PCEs. In PCEP, the path computation requests carry details of the constraints and objective functions that the PCC wishes the PCE to apply in its computation.
This document defines a facility to carry vendor-specific information in PCEP using a dedicated object and a new Type-Length-Value (TLV) that can be carried in any PCEP object that supports TLVs.
This document obsoletes RFC 7150. The only changes from that document are a clarification of the use of the new Type-Length-Value and the allocation of a different code point for the VENDOR- INFORMATION object.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on Internet Standards is available in 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/rfc7470.
Zhang & Farrel Standards Track [Page 1]
RFC 7470 Vendor-Specific Constraints in PCE March 2015
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