Performance Measurement Using STAMP for Segment Routing Networks
draft-gandhi-spring-stamp-srpm-00
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SPRING Working Group R. Gandhi, Ed.
Internet-Draft C. Filsfils
Intended status: Standards Track Cisco Systems, Inc.
Expires: September 24, 2020 D. Voyer
Bell Canada
M. Chen
Huawei
B. Janssens
Colt
March 23, 2020
Performance Measurement Using STAMP for Segment Routing Networks
draft-gandhi-spring-stamp-srpm-00
Abstract
Segment Routing (SR) leverages the source routing paradigm. SR is
applicable to both Multiprotocol Label Switching (SR-MPLS) and IPv6
(SRv6) data planes. This document specifies procedure for sending
and processing probe query and response messages for Performance
Measurement (PM) in Segment Routing networks. The procedure uses the
mechanisms defined in RFC 8762 (Simple Two-Way Active Measurement
Protocol (STAMP)) for Delay Measurement, and uses the mechanisms
defined in this document for Loss Measurement. The procedure
specified is applicable to SR-MPLS and SRv6 data planes and is used
for both Links and end-to-end SR Policies.
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 https://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."
This Internet-Draft will expire on September 24, 2020.
Gandhi, et al. Expires September 24, 2020 [Page 1]
Internet-Draft STAMP for Segment Routing March 2020
Copyright Notice
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions Used in This Document . . . . . . . . . . . . . . 4
2.1. Requirements Language . . . . . . . . . . . . . . . . . . 4
2.2. Abbreviations . . . . . . . . . . . . . . . . . . . . . . 4
2.3. Reference Topology . . . . . . . . . . . . . . . . . . . 5
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Example Provisioning Model . . . . . . . . . . . . . . . 6
4. Probe Messages . . . . . . . . . . . . . . . . . . . . . . . 7
4.1. Probe Query Message . . . . . . . . . . . . . . . . . . . 7
4.1.1. Delay Measurement Query Message . . . . . . . . . . . 7
4.1.2. Loss Measurement Query Message . . . . . . . . . . . 8
4.1.3. Probe Query for Links . . . . . . . . . . . . . . . . 9
4.1.4. Probe Query for End-to-end Measurement for SR Policy 9
4.1.5. Control Code Field for STAMP Messages . . . . . . . . 10
4.1.6. Loss Measurement Query Message Formats for STAMP . . 12
4.2. Probe Response Message . . . . . . . . . . . . . . . . . 14
4.2.1. One-way Measurement Mode . . . . . . . . . . . . . . 15
4.2.2. Two-way Measurement Mode . . . . . . . . . . . . . . 15
4.2.3. Loopback Measurement Mode . . . . . . . . . . . . . . 17
4.2.4. Loss Measurement Response Message Formats for STAMP . 17
4.3. Node Address TLV for STAMP Message . . . . . . . . . . . 19
4.4. Return Path TLV for STAMP Message . . . . . . . . . . . . 19
5. Performance Measurement for P2MP SR Policies . . . . . . . . 21
6. ECMP Support for SR Policies . . . . . . . . . . . . . . . . 22
7. Additional Message Processing Rules . . . . . . . . . . . . . 22
7.1. TTL and Hop Limit . . . . . . . . . . . . . . . . . . . . 22
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