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Minutes IETF102: ipwave
minutes-102-ipwave-00

Meeting Minutes IP Wireless Access in Vehicular Environments (ipwave) WG
Date and time 2018-07-16 17:30
Title Minutes IETF102: ipwave
State Active
Other versions plain text
Last updated 2018-07-17

minutes-102-ipwave-00
IPWAVE WG meeting at IETF 102
MONDAY, 16 July 2018 at 3:30-15:30

Chairs: Russ Housley, Carlos J. Bernardos
Minute takers: Mike Montemurro
Jabber scribe: Russ Housley


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Administrativia
     Presenters: Russ Housley and Carlos Bernardos
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We hope that draft-ietf-ipwave-over-80211ocb-25 went through 6man
review, and Neighbor Discovery (ND) was raised as an issue.  The chairs
called for information about implementations and how ND was addressed,
but we have not gotten much response.

We need review on the Use Cases, Survey and Problem Statement
document (draft-ietf-ipwave-vehicular-networking-03).  Without more
discussion on the mail list, it cannot move forward.  The Problem
Statement will guide any recharter actions.

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** IPWAVE WG documents

Transmission of IPv6 Packets over IEEE 802.11 Networks in mode 
Outside the Context of a Basic Service Set (IPv6-over-80211ocb)
     Presenter: Carlos Bernardos
     Draft: draft-ietf-ipwave-ipv6-over-80211ocb-25
------------------------------------------------------------------------

Alex Petrescu prepared slides, but he could not come to Montreal,
so Carlos Bernardos presented the slides.

Alex Petrescu (through the slides) said that the key change to the draft
is to explain why traditional Neighbor Discovery (ND) works.

It was suggested that ND should be removed from the draft. There
is nothing new being introduced for ND, and it just works.

Sri Gundavelli pointed out that ND does not work in this type of mobile
environment.  ND should be removed from the draft and addressed in
another draft.

Russ Housley raised three broad linds of traffic that need to be
considered.  First, IEEE 1609 traffic.  It is not IPv6 traffic, and it
is broadcast traffic.  So, ND is not an issue here.  Second, when
vehicles are parked, stopped, moving slowly, or moving rapidly in the
same direction at roughly the same speed (such as platooning), typical
ND works.  Third, when a car is moving rapidly down the highway, typical
ND will not work in the short amount of time that a road-side unit is in
radio range.  Maybe the third case can be for future study in the
document.

Carlos Bernardos observes that there needs to be some ND work in the
document for it to be approved.

It was suggested that the group should look at RFC 6775; perhaps the
6lowpan ND solution will work here too.

It was pointed out that phrase "over 802.11 links" is not accurate.
IEEE 802.11 offere more than OCB and one other mode.

The WG Chairs called for people to share implementation experience
based on the existing Internet-Draft. 

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IP-based Vehicular Networking: Use Cases, Survey and Problem Statement
      Presenter: Jaehoon Paul Jeong
      Draft: draft-ietf-ipwave-vehicular-networking-04
------------------------------------------------------------------------

Version -04 has been posted yesterday.

Erik Nordmark observed that the discussion of the IPv6 link model is
incorrect.  It is comparing with a model for IPv6 over Ethernet.  It
would be better to align with the way that 6lowpan uses the model,
including asymmetric connectivity between neighbors and unidirectional
links.

The WG Chairs called for reviewers for this document. Looking for at
least 3 reviewers.  Michelle, Sri, Dick, and Ronald volunteered to
review.

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Other Business
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The WG Cchairs wer asked about plans to recharter.  The Problem
Statement portion of draft-ietf-ipwave-vehicular-networking-03 will
guide any recharter actions.