Performance Measurement Using Simple TWAMP (STAMP) for Segment Routing Networks
draft-gandhi-spring-stamp-srpm-05
SPRING Working Group R. Gandhi, Ed.
Internet-Draft C. Filsfils
Intended status: Informational Cisco Systems, Inc.
Expires: August 14, 2021 D. Voyer
Bell Canada
M. Chen
Huawei
B. Janssens
Colt
February 10, 2021
Performance Measurement Using Simple TWAMP (STAMP) for Segment Routing
Networks
draft-gandhi-spring-stamp-srpm-05
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 describes procedures for
Performance Measurement in SR networks using the mechanisms defined
in RFC 8762 (Simple Two-Way Active Measurement Protocol (STAMP)) and
its optional extensions defined in RFC 8972 and draft-gandhi-ippm-
stamp-srpm. The procedure described is applicable to SR-MPLS and
SRv6 data planes and is used for both links and end-to-end SR paths
including SR Policies.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 14, 2021.
Gandhi, et al. Expires August 14, 2021 [Page 1]
Internet-Draft Using STAMP for Segment Routing February 2021
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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. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Example STAMP Reference Model . . . . . . . . . . . . . . 5
4. Delay Measurement for Links and SR Paths . . . . . . . . . . 7
4.1. Session-Sender Test Packet . . . . . . . . . . . . . . . 7
4.1.1. Session-Sender Test Packet for Links . . . . . . . . 7
4.1.2. Session-Sender Test Packet for SR Paths . . . . . . . 7
4.2. Session-Reflector Test Packet . . . . . . . . . . . . . . 9
4.2.1. One-way Delay Measurement Mode . . . . . . . . . . . 10
4.2.2. Two-way Delay Measurement Mode . . . . . . . . . . . 10
4.2.3. Round-trip Delay Measurement Mode . . . . . . . . . . 12
4.3. Delay Measurement for P2MP SR Policies . . . . . . . . . 13
4.4. Additional STAMP Test Packet Processing Rules . . . . . . 14
4.4.1. TTL . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4.2. IPv6 Hop Limit . . . . . . . . . . . . . . . . . . . 14
4.4.3. Router Alert Option . . . . . . . . . . . . . . . . . 15
5. Packet Loss Measurement for Links and SR Paths . . . . . . . 15
6. Direct Measurement for Links and SR Paths . . . . . . . . . . 15
7. Session Status for Links and SR Paths . . . . . . . . . . . . 15
8. ECMP Support for SR Policies . . . . . . . . . . . . . . . . 15
9. Security Considerations . . . . . . . . . . . . . . . . . . . 16
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 17
11.1. Normative References . . . . . . . . . . . . . . . . . . 17
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