Operations, Administration, and Maintenance (OAM) in Segment Routing Networks with IPv6 Data plane (SRv6)
draft-ietf-6man-spring-srv6-oam-07
6man Z. Ali
Internet-Draft C. Filsfils
Intended status: Standards Track Cisco Systems
Expires: January 27, 2021 S. Matsushima
Softbank
D. Voyer
Bell Canada
M. Chen
Huawei
July 26, 2020
Operations, Administration, and Maintenance (OAM) in Segment Routing
Networks with IPv6 Data plane (SRv6)
draft-ietf-6man-spring-srv6-oam-07
Abstract
This document describes how the existing IPv6 OAM mechanisms can be
used in an SRv6 network. The document also introduces enhancements
for OAM mechanisms for SRv6 networks.
Status of This Memo
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This Internet-Draft will expire on January 27, 2021.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3
1.2. Abbreviations . . . . . . . . . . . . . . . . . . . . . . 3
1.3. Terminology and Reference Topology . . . . . . . . . . . 3
2. OAM Mechanisms . . . . . . . . . . . . . . . . . . . . . . . 5
2.1. O-flag in Segment Routing Header . . . . . . . . . . . . 5
2.1.1. O-flag Processing . . . . . . . . . . . . . . . . . . 5
2.2. OAM Operations . . . . . . . . . . . . . . . . . . . . . 7
3. Illustrations . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Ping in SRv6 Networks . . . . . . . . . . . . . . . . . . 8
3.1.1. Classic Ping . . . . . . . . . . . . . . . . . . . . 8
3.1.2. Pinging a SID . . . . . . . . . . . . . . . . . . . . 9
3.2. Traceroute . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.1. Classic Traceroute . . . . . . . . . . . . . . . . . 10
3.2.2. Traceroute to a SID . . . . . . . . . . . . . . . . . 12
3.3. A Hybrid OAM Using O-flag . . . . . . . . . . . . . . . . 13
3.4. Monitoring of SRv6 Paths . . . . . . . . . . . . . . . . 16
4. Implementation Status . . . . . . . . . . . . . . . . . . . . 17
5. Security Considerations . . . . . . . . . . . . . . . . . . . 17
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
6.1. Segment Routing Header Flags . . . . . . . . . . . . . . 17
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 18
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 18
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.1. Normative References . . . . . . . . . . . . . . . . . . 19
9.2. Informative References . . . . . . . . . . . . . . . . . 19
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 21
1. Introduction
As Segment Routing with IPv6 data plane (SRv6) [RFC8402] simply adds
a new type of Routing Extension Header, existing IPv6 OAM mechanisms
can be used in an SRv6 network. This document describes how the
existing IPv6 mechanisms for ping and trace route can be used in an
SRv6 network.
The document also introduces enhancements for OAM mechanism for SRv6
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