PIM Working Group L. M. Contreras
Internet-Draft Telefonica
Intended status: Standards Track 3 March 2025
Expires: 4 September 2025
IGMP / MLD Extension for Signaling Eco-Mode
draft-contreras-pim-eco-mode-00
Abstract
This document specifies an extension to IGMPv3 and MLDv2 messages to
indicate eco mode in the delivery of multicast content based on the
mechanism described in [RFC9279].
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 4 September 2025.
Copyright Notice
Copyright (c) 2025 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 Revised BSD License text as
described in Section 4.e of the Trust Legal Provisions and are
provided without warranty as described in the Revised BSD License.
Contreras Expires 4 September 2025 [Page 1]
Internet-Draft IGMP/MLD Eco Mode March 2025
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Eco-mode Extension . . . . . . . . . . . . . . . . . . . . . 3
2.1. Eco-mode TLV format . . . . . . . . . . . . . . . . . . . 3
2.2. Eco-mode usage . . . . . . . . . . . . . . . . . . . . . 3
3. Security and operational considerations . . . . . . . . . . . 3
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
5. Informative References . . . . . . . . . . . . . . . . . . . 4
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 4
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction
Video contents currently represent the major source of traffic in
operator's networks. The same content can be distributed in
multicast with different resolution adapted to the characteristics of
suscriber's receiver. The amount of traffic per multicast flow is
dependent of the resolution of the encoded video (the higher the
resolution, the higher the bit rate per multicast video flow), which
tends to be higher as long as the suscribers' devices support higher
resolutions. In addition to that, the distribution trees are
continuously built in the network, in most cases proactively
subscribing to channels to minimize access to the content even during
periods of low (or inexistent) demand.
As of today, there is no mechanism available for the subscribers to
indicate their willingness of applying an eco-mode consumption of
multicast content to their suscription. This can be incentivize the
user to explicitely signal the network the desire of receiving more
energy efficient service, or it could even be activated by default,
then forcing the user to explicitely indicate the opposite behavior
in certain circumstances (for instance, to perceive better quality of
service).
Multicast content distribution inherently optimizes bandwidth by
delivering the same content to multiple receivers simultaneously,
reducing redundant transmissions. An eco-mode, when applied to
multicast distribution, can further optimize resource utilization by
dynamically adjusting transmission power, reducing active network
elements, or enabling sleep modes when demand is low. By
implementing an eco-mode, the system can reduce power usage during
off-peak hours, when fewer receivers are active in the system, or by
reducing resolution of the content.
Contreras Expires 4 September 2025 [Page 2]
Internet-Draft IGMP/MLD Eco Mode March 2025
This document proposes an extension of IGMP and MLD messages for
supporting the signaling of eco-mode. The implications of the eco-
mode either in the receiver or the provider side is out of the scope
of this document.
2. Eco-mode Extension
[RFC9279] defines a mechanism for extending IGMPv3 and MLDv2
messages. This document proposes an extension for indication of eco-
mode.
2.1. Eco-mode TLV format
The format of the extension is as follows:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Eco-Mode Type = TBD | Eco-Mode Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Eco-Mode Value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Eco-Mode Type: 2 octets. The type of the Eco-Mode TLV extension is
TBD.
Eco-Mode Extension Length: 2 octets. This specifies the length in
octets of the following Value field. The length of the Eco-Mode
extension is set to 8 octects.
Eco-Mode Value: This field contains the eco-mode value, which is
considerd as boolean, where a value of 1 represents the eco-mode set
to true, and a value of 0 represents the eco-mode set to false.
2.2. Eco-mode usage
The eco-mode is intended to be supported in both the Query and Report
messages for IGMP and MLD. The logic behind the inclusion of the
eco-mode extension at both susbcriber and provider side is out of the
scope of this draft.
3. Security and operational considerations
Same security and operational considerations as described in
[RFC9279] apply also in this document.
Contreras Expires 4 September 2025 [Page 3]
Internet-Draft IGMP/MLD Eco Mode March 2025
4. IANA Considerations
This document defines a new extension to IGMPv3 and MLDv2 messages
according to [RFC9279]. IANA is requested to allocate the following
extension type to the registry.
+================+==========+==============+===============+
| Extension Type | Length | Name | Reference |
+================+==========+==============+===============+
| TBD | 8 | Eco-mode | This document |
+----------------+----------+--------------+---------------+
5. Informative References
[RFC9279] Sivakumar, M., Venaas, S., Zhang, Z., and H. Asaeda,
"Internet Group Management Protocol Version 3 (IGMPv3) and
Multicast Listener Discovery Version 2 (MLDv2) Message
Extension", RFC 9279, DOI 10.17487/RFC9279, August 2022,
<https://www.rfc-editor.org/info/rfc9279>.
Acknowledgements
This work has been partially funded by the EXIGENCE project, co-
funded via the Smart Networks and Services Joint Undertaking (SNS JU)
under the European Union’s Horizon Europe research and innovation
program under Grant Agreement No. 101139120.
Author's Address
Luis M. Contreras
Telefonica
Ronda de la Comunicacion, s/n
28050 Madrid
Spain
Email: luismiguel.contrerasmurillo@telefonica.com
URI: http://lmcontreras.com
Contreras Expires 4 September 2025 [Page 4]