Extensions to Path Computation Element Protocol (PCEP) to Support Resource Sharing-based Path Computation
draft-zhang-pce-resource-sharing-10

Document Type Active Internet-Draft (individual)
Last updated 2019-08-18
Stream (None)
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
PCE Working Group                                            Xian Zhang 
Internet Draft                                            Haomian Zheng 
Category: Standards track                           Huawei Technologies 
                                               Oscar Gonzales de Dios  
                                                            Victor Lopez 
                                                          Telefonica I+D
                                                             Yunbin Xu 
                                                                 CAICT 
 
Expires: February 19, 2019                              August 19, 2019 
                                    
                                    
                                    
    Extensions to Path Computation Element Protocol (PCEP) to Support 
                Resource Sharing-based Path Computation 
                                    
                                    
                    draft-zhang-pce-resource-sharing-10 

Status of this Memo 

   This Internet-Draft is submitted to IETF in full conformance with   
   the provisions of BCP 78 and BCP 79. 

   Internet-Drafts are working documents of the Internet Engineering   
   Task Force (IETF), its areas, and its working groups.  Note that   
   other groups may also distribute working documents as Internet-   
   Drafts. 

   Internet-Drafts are draft documents valid for a maximum of six 
   months and may be updated, replaced, or obsoleted by other documents 
   at any time.  It is inappropriate to use Internet-Drafts as 
   reference material or to cite them other than as "work in progress." 

   The list of current Internet-Drafts can be accessed at   
   http://www.ietf.org/ietf/1id-abstracts.txt. 

   The list of Internet-Draft Shadow Directories can be accessed at   
   http://www.ietf.org/shadow.html. 

   This Internet-Draft will expire on  February 19, 2020. 

Copyright Notice 

   Copyright (c) 2019 IETF Trust and the persons identified as the    
   document authors.  All rights reserved. 

 
 
 
Zhang et al             Expires February 2020                 [Page 1] 


draft-zhang-pce-resource-sharing-10                   August 2019 

   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. 

Requirements Language 

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",   
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this   
   document are to be interpreted as described in [RFC2119]. 

Abstract 
 
   Resource sharing in a network means two or more Label Switched Paths 
   (LSPs) use common piece(s) of resource along their paths. This can 
   help save network resource and is useful in scenarios such as LSP 
   recovery or when two LSPs do not need to be active at the same time. 
   A Path Computation Element (PCE) is responsible for path computation 
   with such requirement. The resource-sharing-based path computation 
   with better efficiency can be achieved together with the association 
   object in PCEP. 

   This document extends the Path Computation Element Protocol (PCEP) 
   in order to support resource sharing-based path computation, which 
   is a special case in the association path computation.  

Table of Contents 

   1. Introduction and Motivation .................................. 3 
   2. Motivation ................................................... 4 
      2.1. Single Domain Use Case................................... 4 
      2.2. Multiple Domains Use Case ............................... 7 
      2.3. Bulk Path Computation Use Case .......................... 8 
   3. Extensions to PCEP .......................................... 10 
      3.1. Association group and type ............................. 10 
      3.2. Resource Sharing TLV ................................... 10 
      3.3. Processing Rules ....................................... 11 
   4. Security Considerations  .................................... 12 
   5. IANA Considerations ......................................... 13 
      5.1. Association Object Type Indicators ..................... 13 
   6. References .................................................. 14 
 
 
Zhang et al             Expires February 2020                 [Page 2] 


draft-zhang-pce-resource-sharing-10                   August 2019 

      6.1. Normative References ................................... 14 
Show full document text