PCEP Extensions for Reporting MPLS-TE LSP Performance Measurements with Stateful PCE
draft-gandhi-pce-pm-07

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PCE Working Group                                              R. Gandhi
Internet-Draft                                       Cisco Systems, Inc.
Intended Status: Standards Track                                  B. Wen
Expires: September 13, 2017                                      Comcast
                                                                C. Barth
                                                        Juniper Networks
                                                                D. Dhody
                                                     Huawei Technologies
                                                          March 12, 2017

    PCEP Extensions for Reporting MPLS-TE LSP Performance Measurements 
                             with Stateful PCE
                          draft-gandhi-pce-pm-07

Abstract

   The Path Computation Element Communication Protocol (PCEP) provides
   mechanisms for Path Computation Elements (PCEs) to perform path
   computations in response to Path Computation Clients (PCCs) requests.
    The Stateful PCE extensions allow Stateful control of Multi-Protocol
   Label Switching (MPLS) Traffic Engineering Label Switched Paths (TE
   LSPs) using PCEP.

   In certain networks, network performance data such as packet loss,
   delay and delay variation (jitter) as well as bandwidth utilization
   is a critical measure for Traffic Engineering (TE).  This data
   provides operators the characteristics of their networks for
   performance evaluation that is required to ensure the Service Level
   Agreements (SLAs).  Performance Measurement (PM) mechanisms can be
   employed to monitor these metrics end-to-end for TE Label Switched
   Paths (LSPs).  This document describes Path Computation Element
   Protocol (PCEP) extensions for reporting such performance
   measurements to an Active Stateful PCE for both PCE-Initiated and
   PCC-Initiated LSPs.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
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   Internet-Drafts are working documents of the Internet Engineering
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   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors. All rights reserved.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5
     1.1.  Dependencies and Considerations  . . . . . . . . . . . . .  5
     1.2.  Auto-bandwidth Considerations  . . . . . . . . . . . . . .  6
   2.  Conventions Used in This Document  . . . . . . . . . . . . . .  7
     2.1.  Requirements Language  . . . . . . . . . . . . . . . . . .  7
     2.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  7
     2.3.  Measurement Units  . . . . . . . . . . . . . . . . . . . .  7
   3.  Overview of the PCEP Extensions  . . . . . . . . . . . . . . .  7
     3.1.  Report Thresholds  . . . . . . . . . . . . . . . . . . . .  8
   4.  Sub-TLVs for Measurements Attributes . . . . . . . . . . . . .  9
     4.1.  Measurement-Enable sub-TLV . . . . . . . . . . . . . . . .  9
     4.2.  Measurement-Interval sub-TLV . . . . . . . . . . . . . . . 10
     4.3.  Report-Threshold sub-TLV . . . . . . . . . . . . . . . . . 10
     4.4.  Report-Threshold-Percentage sub-TLV  . . . . . . . . . . . 11
 

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