Segment Routing Header encapsulation for Alternate Marking Method
draft-fz-spring-srv6-alt-mark-00

Document Type Active Internet-Draft (individual)
Authors Giuseppe Fioccola  , Tianran Zhou  , Mauro Cociglio 
Last updated 2021-01-19
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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

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on July 23, 2021.

Copyright Notice

   Copyright (c) 2021 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

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   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

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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