Performance Measurement in Segment Routing Networks with MPLS Data Plane
draft-gandhi-spring-sr-mpls-pm-02
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SPRING Working Group R. Gandhi, Ed.
Internet-Draft C. Filsfils
Intended Status: Informational S. Soni
Expires: January 16, 2019 Cisco Systems, Inc.
D. Voyer
Bell Canada
S. Salsano
Universita di Roma "Tor Vergata"
P. L. Ventre
CNIT
M. Chen
Huawei
July 15, 2018
Performance Measurement in
Segment Routing Networks with MPLS Data Plane
draft-gandhi-spring-sr-mpls-pm-02
Abstract
RFC 6374 specifies protocol mechanisms to enable the efficient and
accurate measurement of packet loss, one-way and two-way delay, as
well as related metrics such as delay variation in MPLS networks
using probe messages. This document reviews how these mechanisms can
be used for Delay and Loss Performance Measurements (PM) in Segment
Routing (SR) networks with MPLS data plane (SR-MPLS), for both SR
links and end-to-end SR Policies. The performance measurements for
SR links are used to compute extended Traffic Engineering (TE)
metrics for delay and loss and are advertised in the network using
routing protocols.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
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."
Gandhi, et al. Expires January 16, 2019 [Page 1]
Internet-Draft SR-MPLS Performance Measurement July 15, 2018
Copyright Notice
Copyright (c) 2018 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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions Used in This Document . . . . . . . . . . . . . . 3
2.1. Abbreviations . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Reference Topology . . . . . . . . . . . . . . . . . . . . 4
3. Probe Query and Response Packets . . . . . . . . . . . . . . . 5
3.1. Probe Packet Header for SR-MPLS Policies . . . . . . . . . 5
3.2. Probe Packet Header for SR-MPLS Links . . . . . . . . . . 5
3.3. Probe Response Message for SR-MPLS Links and Policies . . 6
3.3.1. One-way Measurement Probe Response Message . . . . . . 6
3.3.2. Two-way Measurement Probe Response Message . . . . . . 6
4. Performance Delay Measurement . . . . . . . . . . . . . . . . 6
4.1. Delay Measurement Message Format . . . . . . . . . . . . . 6
4.2. Timestamp . . . . . . . . . . . . . . . . . . . . . . . . 8
5. Performance Loss Measurement . . . . . . . . . . . . . . . . . 8
5.1. Loss Measurement Message Format . . . . . . . . . . . . . 8
6. SR Link Extended TE Metrics Advertisements . . . . . . . . . . 10
7. Security Considerations . . . . . . . . . . . . . . . . . . . 10
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.1. Normative References . . . . . . . . . . . . . . . . . . . 11
9.2. Informative References . . . . . . . . . . . . . . . . . . 11
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 13
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