Keene, NH USA york@isoc.org

Internet manycouches This document captures initial thoughts about having IETF meetings that are completely virtual. It explores the issues involved with both a "planned" virtual meeting and an "emergency" virtual meeting.

What would a "completely virtual" IETF meeting look like? What would be issues? What would be the advantages? How could it work? The "manycouches" design team was convened to explore these issues and understand what might be involved in holding a completely virtual meeting. On 20 July 2017, members met with the IESG for a joint discussion at the IETF 96 meeting in Berlin. This document outlines many of the key issues and questions for discussion that emerged out of that Berlin meeting as well as mailing list conversations. Discussions identified two types of potential meetings the IETF could have that would be completely virtual: PLANNED VIRTUAL MEETING - A "regular" meeting of the IETF that would be planned to be completely virtual. EMERGENCY VIRTUAL MEETING - There could be a situation where a planned physical meeting suddenly needs to be virtual due to physical or political situations. For example, a natural disaster shortly before a meeting might cause people to not be able to attend. Tools and processes may be very similar between the two types of meetings. A key difference is that for an "emergency" meeting there may be the desire to replicate the planned schedule of the physical meeting as closely as possible. It is unclear if the IETF might ever choose to hold a planned virtual meeting, but this document is designed to facilitate the discussion around what that might look like.

Proponents of planned virtual meetings point to benefits such as: No requirement to travel, removing an economic issue for many. All participants are on an equal footing (versus current situation where physical participants have more interaction capability than remote attendees). Ability to think differently about how the schedule of the meeting might look. The sections below outline many of the questions and ideas, some of which may be benefits.

There are many challenges with hosting a completely virtual meeting. Some key issues are: Inability to have the "high bandwidth" conversations enabled by face-to-face meetings. No ability to have "hallway conversations" and casual meetings with other participants. The remainder of the document outlines many of the challenges and associated questions. Several participants voiced the opinion that replacing a physical meeting would be pretty much impossible.

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 . Additionally, the key words "MIGHT", "COULD", "MAY WISH TO", "WOULD PROBABLY", "SHOULD CONSIDER", and "MUST (BUT WE KNOW YOU WON'T)" in this document are to interpreted as described in RFC 6919 .

With a completely virtual meeting, the structure of the meeting does not have to comply with the traditional IETF meeting schedule. It could, for instance, stretch out over the entire 24 hours of a day. Questions for discussion include: Is the meeting still structured over a week? Do the meetings still exist within certain hours? Do multiple meetings exist at the same time as they do now? Again, in the case of an unplanned "emergency" virtual meeting the desire may be to stick with the already-planned schedule. But for a planned virtual meeting the schedule can be open for discussion. There was some discussion that a meeting could span more than the traditional week. However, the counterpoint is that keeping it within a week gives a focused block of time that people could allocate for participation in the virtual event.

What timezone does a virtual meeting operate in? Or does it operate in multiple timezones? One suggestion was that each working group might choose its own timezone based on the best timezone for the main contributors and leaders. (Although this might then limit participation from other areas of the world.)

What do deadlines look like for a completely virtual meeting? Are the deadlines for agendas and drafts kept as they are for a regular meeting?

What does a plenary look like in a virtual meeting? The same large session as today?

It is currently possible for remote participants to join into multiple working group sessions at the same time. Users simply run Meetecho in multiple browser windows or multiple computers. How does this impact users' experience?

It is quite common for groups to decide during an IETF meeting to go off and have a side meeting. How can this capability be reproduced in a virtual environment? Could the system allow people to create ad hoc meetings in some fashion?

The casual hallway conversations are a key component of IETF physical meetings. How can some version of this capacity be made available?

How do you incorporate some concept of "unstructured" time where people can meet and connect?

Part of a physical meeting involves discovering other people with common interests or backgrounds. How do you help people find others?

How do "mic lines" work in a completely virtual meeting? Would this in fact be a benefit as all attendees would be in the same queue?

How would the "mentor" program work in a virtual meeting? The same as with a physical meeting?

How do you bring new people into sessions? How do people learn about side meetings? About hallway conversations?

Many technical questions need to be discussed.

What is the infrastructure used to host a completely virtual meeting? Are current systems such as Meetecho sufficient? Would new infrastructure need to be established? What kind of bandwidth would need to be available?

Do virtual attendees have video connections? voice? chat?

Where does the NOC "exist" for a completly virtual meeting? What is its role?

What is the impact of a virtual meeting on centralized resources such as support staff? What is the full role of the Secretariat during the meeting?

What would the impact be on IETF finances? Would we charge the same amount to attendees as a regular meeting?

There are many considerations related to security and privacy that need to be factored in to a virtual meeting.

How do we ensure that an attack such as a distributed denial of service (DDoS) doesn't take out the entire virtual meeting? What about an attack against a particular region?

How do you know that the person who is logged into whatver system is used is in fact who they say they are? In a physical meeting: We can see the person and physically identify them. Users wear name badges that were issued at registration time. There are typically other people who may know many individuals. How are these physical considerations replicated in a virtual meeting?

There are no IANA considerations associated with this document.

The author thanks all of the participants of the manycouches design team as well as the IESG members who participated in the discussion on 20 July 2016 at IETF 96 in Berlin.

This document is being developed using a repository on Github at: Comments, issues and pull requests are welcome.