Multicast On-path Telemetry Solutions
draft-song-multicast-telemetry-07
MBONED H. Song
Internet-Draft M. McBride
Intended status: Standards Track Futurewei Technologies
Expires: July 23, 2021 G. Mirsky
ZTE Corp.
G. Mishra
Verizon Inc.
January 19, 2021
Multicast On-path Telemetry Solutions
draft-song-multicast-telemetry-07
Abstract
This document discusses the requirement of on-path telemetry for
multicast traffic. The existing solutions are examined and their
issues are identified. Solution modifications are proposed to allow
the original multicast tree to be correctly reconstructed without
unnecessary replication of telemetry information.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119][RFC8174] when, and only when, they appear in all
capitals, as shown here.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on July 23, 2021.
Song, et al. Expires July 23, 2021 [Page 1]
Internet-Draft Multicast Telemetry January 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
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements for Multicast Traffic Telemetry . . . . . . . . 3
3. Issues of Existing Techniques . . . . . . . . . . . . . . . . 4
4. Proposed Modifications to Existing Techniques . . . . . . . . 4
4.1. Per-hop postcard using IOAM DEX . . . . . . . . . . . . . 5
4.2. Per-section postcard . . . . . . . . . . . . . . . . . . 7
5. Considerations for Different Multicast Protocols . . . . . . 8
5.1. Application in PIM . . . . . . . . . . . . . . . . . . . 8
5.2. Application in P2MP . . . . . . . . . . . . . . . . . . . 9
5.3. Application in BIER . . . . . . . . . . . . . . . . . . . 9
6. Security Considerations . . . . . . . . . . . . . . . . . . . 10
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 10
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
10.1. Normative References . . . . . . . . . . . . . . . . . . 10
10.2. Informative References . . . . . . . . . . . . . . . . . 11
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 12
1. Introduction
Multicast traffic is an important traffic type in today's Internet.
Multicast provides services that are often real time (e.g., online
meeting) or have strict QoS requirements (e.g., IPTV, Market Data).
Multicast packet drop and delay can severely affect the application
performance and user experience.
It is important to monitor the performance of the multicast traffic.
Existing OAM techniques cannot gain direct and accurate information
about the multicast traffic. New on-path telemetry techniques such
as In-situ OAM [I-D.ietf-ippm-ioam-data], Postcard-based Telemetry
Song, et al. Expires July 23, 2021 [Page 2]
Internet-Draft Multicast Telemetry January 2021
Show full document text