Segment Routing Header encapsulation for Alternate Marking Method
draft-fz-spring-srv6-alt-mark-00
SPRING Working Group G. Fioccola
Internet-Draft T. Zhou
Intended status: Standards Track Huawei
Expires: July 23, 2021 M. Cociglio
Telecom Italia
January 19, 2021
Segment Routing Header encapsulation for Alternate Marking Method
draft-fz-spring-srv6-alt-mark-00
Abstract
This document describes how the Alternate Marking Method can be used
as the passive performance measurement tool in an SRv6 network. It
defines how Alternate Marking data fields are transported as part of
the Segment Routing with IPv6 data plane (SRv6) header.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
Status of This Memo
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provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on July 23, 2021.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Application of the Alternate Marking to SRv6 . . . . . . . . 3
3. Definition of the SRH AltMark TLV . . . . . . . . . . . . . . 3
3.1. Data Fields Format . . . . . . . . . . . . . . . . . . . 4
4. Use of the SRH AltMark TLV . . . . . . . . . . . . . . . . . 5
5. Alternate Marking Method Operation . . . . . . . . . . . . . 6
6. Security Considerations . . . . . . . . . . . . . . . . . . . 6
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 7
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 7
9.1. Normative References . . . . . . . . . . . . . . . . . . 7
9.2. Informative References . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction
[RFC8321] and [RFC8889] describe a passive performance measurement
method, which can be used to measure packet loss, latency and jitter
on live traffic. Since this method is based on marking consecutive
batches of packets, the method is often referred as Alternate Marking
Method.
This document defines how the Alternate Marking Method ([RFC8321])
can be used to measure packet loss and delay metrics for Segment
Routing with IPv6 data plane (SRv6).
[RFC8754] defines the Segment Routing Header (SRH) and how it is used
by nodes that are Segment Routing (SR) capable.
[I-D.fioccola-v6ops-ipv6-alt-mark] reported a summary on the possible
implementation options for the application of the Alternate Marking
Method in an IPv6 domain. [I-D.ietf-6man-ipv6-alt-mark] defines a
new TLV that can be encoded in the Option Headers (both Hop-by-hop or
Destination) for the purpose of the Alternate Marking Method
application in an IPv6 domain.
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This document defines how Alternate Marking data is carried as SRH
TLV, that can be can be piggybacked in the packet and transported as
part of the SRH. The usage of SRH TLV is introduced in [RFC8754].
2. Application of the Alternate Marking to SRv6
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