Operations, Administration, and Maintenance (OAM) in Segment Routing Networks with IPv6 Data plane (SRv6)
draft-ietf-6man-spring-srv6-oam-05
6man Z. Ali
Internet-Draft C. Filsfils
Intended status: Standards Track Cisco Systems
Expires: December 14, 2020 S. Matsushima
Softbank
D. Voyer
Bell Canada
M. Chen
Huawei
June 12, 2020
Operations, Administration, and Maintenance (OAM) in Segment Routing
Networks with IPv6 Data plane (SRv6)
draft-ietf-6man-spring-srv6-oam-05
Abstract
This document describes how the existing IPv6 OAM mechanisms can be
used in an SRv6 network. The document also introduces enhancements
for controller-based OAM mechanisms for SRv6 networks.
Status of This Memo
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This Internet-Draft will expire on December 14, 2020.
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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 . . . . . . . . . . . . . . . . . . 6
3. Illustrations . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Ping in SRv6 Networks . . . . . . . . . . . . . . . . . . 7
3.1.1. Classic Ping . . . . . . . . . . . . . . . . . . . . 7
3.1.2. Pinging a SID . . . . . . . . . . . . . . . . . . . . 9
3.2. Traceroute . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.1. Classic Traceroute . . . . . . . . . . . . . . . . . 10
3.2.2. Traceroute to a SID . . . . . . . . . . . . . . . . . 11
3.3. A Controller-Based Hybrid OAM Using O-flag . . . . . . . 13
3.4. Monitoring of SRv6 Paths . . . . . . . . . . . . . . . . 15
4. Implementation Status . . . . . . . . . . . . . . . . . . . . 16
5. Security Considerations . . . . . . . . . . . . . . . . . . . 16
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 16
6.1. Segment Routing Header Flags . . . . . . . . . . . . . . 17
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 17
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 17
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
9.1. Normative References . . . . . . . . . . . . . . . . . . 18
9.2. Informative References . . . . . . . . . . . . . . . . . 18
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 20
1. Introduction
As Segment Routing with IPv6 data plane (SRv6) 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 controller-based OAM
mechanism for SRv6 networks. Specifically, the document describes an
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