Re: [Banana] BANANA BOF in Prague?

[Dave Dolson <[e-mail]>]

Margaret,
Thanks for submitting the request.
I think the charter needs to include scope for the algorithm deciding what proportion of traffic the sender must put on each link.

In my mind, the sender must model the congestion window for each link, and therefore know the loss (or ECN) experienced on each link. 
There may be other approaches. But I don't think this can be left to the implementers.

-Dave




-----Original Message-----
From: Banana [mailto:[e-mail]] On Behalf Of Margaret Cullen
Sent: Monday, May 22, 2017 8:11 PM
To: [e-mail]
Subject: [Banana] BANANA BOF in Prague?

Just FYI —

I have submitted a request for a WG Forming BANANA BOF in Prague with the information included below.  This information has also been added to the BOF Wiki.

Please let me know if you notice any errors or omissions, or if you have any questions or suggestions.

Thanks,
Margaret

BOF Name:  Bandwidth Aggregation for Network Access (BANANA)

Description:

Bandwith Aggregation consists of splitting local traffic across multiple Internet links on a per-packet basis, including the ability to split a single flow across multiple links when necessary.

It is the goal of this WG to produce a Bandwidth Aggregation solution that will provide the following benefits:

- Higher Per-Flow Bandwidth: Many Internet links available to homes
  and small offices (DSL, Cable, LTE, Satellite, etc.) have relatively
  low bandwidth.  Users may wish to run applications (such as
  streaming video, or content up/downloads) that require (or could
  benefit from) more bandwidth for a single traffic flow than is
  available on any of the local links.  A Bandwidth Aggregation
  solution could supply the needed bandwidth by splitting a single
  traffic flow across multiple Internet links.

- Reduced Cost: Traffic sharing on a per-packet basis allows the full
  bandwidth of the lowest-cost link to be used first, only using a
  higher-cost link when the lowest-cost link is full.

- Increased Reliability: When one Internet link goes down, ongoing
  application flows can be moved to another link, preventing service
  disruption.

Agenda
- Agenda bash, scribe, minute taker [5min]
- Review of proposed charter text (see below) [10 mins]
- Charter discussion [45 mins]
- Questions: [30 mins]
    - Is the charter text clear and understandable?
    - Should the IETF do this work?
    - Are you willing to contribute (write, review, email, etc.)

Status: WG Forming
Responsible AD: Suresh Krishnan
BoF proponents: Margaret Cullen / Brian Trammel / Mingui Zhang BoF chairs: Margaret Cullen / Brian Trammel Number of people expected to attend: 100 Length of session (1, 1.5, 2, or 2.5 hours): 1.5 hours Conflicts to avoid (whole Areas and/or WGs): Internet area, Homenet, TRILL, MPTCP, QUIC

-     Mailing List: ​https://www.ietf.org/mailman/listinfo/banana
-     Draft charter: see below
-     Relevant drafts: [[BR]]
https://datatracker.ietf.org/doc/draft-leymann-banana-signalling
https://datatracker.ietf.org/doc/draft-leymann-banana-data-encap
https://datatracker.ietf.org/doc/draft-leymann-banana-integration
https://datatracker.ietf.org/doc/draft-leymann-banana-discard-load-rebalance
https://datatracker.ietf.org/doc/draft-leymann-banana-discard-timer
https://tools.ietf.org/html/draft-kanugovi-intarea-mams-protocol-04
https://tools.ietf.org/html/draft-zhu-intarea-mams-control-protocol-01


Proposed Charter Text and Milestones:

The BANdwidth Aggregation for Network Access (BANANA) Working Group is chartered to develop solution(s) to support dynamic path selection on a per-packet basis in networks that have more than one point of attachment to the Internet.

Bandwith Aggregation consists of splitting local traffic across multiple Internet links on a per-packet basis, including the ability to split a single flow across multiple links when necessary.

It is the goal of this WG to produce a Bandwidth Aggregation solution that will provide the following benefits:

- Higher Per-Flow Bandwidth: Many Internet links available to homes
  and small offices (DSL, Cable, LTE, Satellite, etc.) have relatively
  low bandwidth.  Users may wish to run applications (such as
  streaming video, or content up/downloads) that require (or could
  benefit from) more bandwidth for a single traffic flow than is
  available on any of the local links.  A Bandwidth Aggregation
  solution could supply the needed bandwidth by splitting a single
  traffic flow across multiple Internet links.

- Reduced Cost: Traffic sharing on a per-packet basis allows the full
  bandwidth of the lowest-cost link to be used first, only using a
  higher-cost link when the lowest-cost link is full.

- Increased Reliability: When one Internet link goes down, ongoing
  application flows can be moved to another link, preventing service
  disruption.

Proposed BANANA solutions use different approaches (e.g. tunnels, proxies, etc.) to split and recombine traffic, but at an abstract level, they involve a local (hardware or software) component on the multi-access network, a remote component within the Internet, and mechanisms for those components to find each other, exchange signalling information, and direct traffic to each other.  We refer to these functional components as the Local and Remote "BANANA Boxes", and we refer to the method they use to direct traffic to each other as a "BANANA Encapsulation".

The Bandwidth Aggregation solutions developed in this group will work whether the attached links are provided by a single Internet Service Provider or multiple Providers.

The BANANA WG will have the following work items:

- Determine how Local and Remote BANANA Boxes find each other.

- Specify a signalling protocol that can be used to send configuration
  and control information between BANANA boxes, including:
    -  IP Prefixes of local links
    -  Information about link properties & status
    -  Information needed by the encapsulations

- Select (and extend, if necessary) an existing tunneling
  encapsulation for sending traffic between BANANA Boxes.

- Work with other IETF WGs defining BANANA encapsulations
  (if any) to ensure that the discovery mechanism and signalling
  protocol will meet their needs.  

BANANA Boxes will determine if a specific flow is eligible for Bandwith Aggregation. If a flow is not eligible, it will not be split across multiple attached links.

For this initial charter, we will focus on how Local BANANA Boxes communicate with Remote BANANA Boxes.  We will not address the topic of cooperation between multiple Local BANANA Boxes.

MILESTONES
Apr 2018 Adopt WG draft for discovery/configuration mechanism Apr 2018 Adopt WG draft for signalling proocol Apr 2018 Adopt WG draft for tunnel encapsulation Feb 2019 WGLC on discovery/configuration mechanism Feb 2019 WGLC on signalling protocol Feb 2019 WGLC on tunnel encapsulation Aug 2019 Send discovery/configuration mechanism to the IESG Aug 2019 Send signalling protocl to the IESG Aug 2019 Send tunnel encapsulation to the IESG


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