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Minutes IETF106: mops
minutes-106-mops-00

Meeting Minutes Media OPerationS (mops) WG
Date and time 2019-11-21 02:00
Title Minutes IETF106: mops
State Active
Other versions plain text
Last updated 2019-12-03

minutes-106-mops-00
MOPs November 21 2019 - First MOPs WG meeting ever!
Alas, in conflict with TSVWG...
Chairs:  Leslie Daigle, Glenn Deen

No comments on agenda bash
Intro to WG

Review of Concrete work items
[15min] Draft of edge network operational considerations for streaming media
   - Jake Holland
   - draft-jholland-mops-taxonomy
   On milestone but not adopted

Key question: how to calculate the demand vs capacity in a way that will be
useful for communicating today and archiving for posterity

   [Jake] there is a mismatch between the maximum
   [Martin Thompson] try to break to where the capacity is important (last
   mile, core) [Dave Oran] is there a correlation between high demand and live
   data. [Glenn Deen] perhaps produce two charts, one for on-demand file to
   stream delivery and the other for live. different metrics are important,
   latency, BW,.. [Jake] there is some trext about ABR in the document [Leslie
   Daigle] it seems there is interset in the content, need to see if this is a
   WG asopt.

   Action
   [Leslie] are we in favor of adopting
   [Leslie] Some hum for adopting low hum against it. 3 for in the jabber.

   [Aaron Falk] use known metrics.
   [Jake] will be happy to have co-authors.

Hum taken to adopt the document  - hum appeared to support adoption

### Updates from elsewhere

* Updates from other organizations' work
   - [15min] Sanjay Mishra - Streaming Video Alliance Labs initiative
   slide 3 is the list of the technical WGs
   SVA labs open source  slide 6 what they did so far in open caching

   [Leslie] did you provide feedback to the CDNI WG, not only brining new work.
   [Sanjay] the WG chiar are aware of what is happening in SVA.
   [Aaron] the slide colors are bad

   no more comments and questions

   - [5min] Glenn Deen -- reflections from SMPTE 2019

   Time synchronization is important
   [Roni Even]How to synchronize media from different sources e.g. different
   cameras with gos clocks. How is the media sent over the IP network and
   address the clock resolutions [Aaron] there is work in ITU on time solution.
   it is good if we can capture in MOPS the use case [Dave] data centers have
   more precise time and should be taken into account. use atomic clocks that
   are now cheap [Glenn] there is no one way for  measuring or distributing
   time. [Aaron] what is the focus in Jake's draft, production ,...? [Leslie]
   on the edge side

   [Glenn] security and integrity of time distribution is important in this
   space and maybe an new area of work/focus [Aaron] capturing SMPTE
   operational use cases and issues around time in draft maybe useful

### General discussion of issues
* Operational Issues Observed
   - [15min] Igor Lubashev -- QUIC and streaming
   how to measure delay and loss when the inforamtion is encryptes (QUIC)
   [Spencer Dawkins] first time OPS WG discuss this topic and not in Transport.
   Why using similar TCP flow is not enough [Igor] TCP and UDP applications
   getting different treatment. [Bernard Aboba] this assumes similar streaming
   applications, need more detail to allow the network to support for example
   layered media Spin bit in QUIC V1; support for loss bits may be in a QUIC
   extension. Need feedback from operators about the need for such montoring
   tools, were not present in QUIC WG [Spencer] explict signalling does it
   involve the endpoint [Igor] yes. [Spencer] do not understand how you can
   measure without involving the endpoints. This is a good direction, wish we
   started years ago [Igor] QUIC is new and scaled up the problem [Colin
   Perkins] there is a draft in tsvwg about the effects of header encryptions,
   please review the part about the network managment [Sanjay] this is good,
   there was feedback from operators and will continue to follow [Saker] how do
   you do without involving endpoints, there is work in MOSQUE to add explicit
   signals using proxies [Emile Stephan] as operator require the monitoring of
   network, were involved in spin bit and now working on loss bit. [Spencer]
   there was the plus BOF in Berlin talkin about providing information to on
   path observers which could not form a WG. [Emile] do not provide the session
   keys to the observers. endpoint support is important [Colin] in conferencing
   video there is the RTCP for reporting ftom the Endpoint. using reports from
   endpoints can be helpful.

General discussion of issues

[Eric Vyncke, responsible AD] happy with the session

AOB

Thanks to Roni Even for taking notes during the session.

High level summary as posted to Operations & Management wiki:

First meeting as a WG.  Discussion of draft-jholland-mops-taxonomy (edge
network operational considerations for streaming media), and formal adoption as
a WG work item.  Jake Holland would welcome a co-author to help move it forward.

Updates from elsewhere -- Streaming Video Alliance's use of CDNI protocol work;
Society of Motion Picture and Television Engineers (SMPTE) recent meeting
highlights -- clear dependencies on reliable and granular time reporting in
operations.

Issues for streaming operations -- overview of QUIC implications for networks
streaming video.  There are extensions proposed in the QUIC WG, and operators
interested in media delivery should go there to weigh in.