Re: [ipwave] Intdir early review of draft-ietf-ipwave-ipv6-over-80211ocb-34

[NABIL BENAMAR <[e-mail]>]

+1 Sri

On Sun, Apr 14, 2019, 00:06 Sri Gundavelli (sgundave) <[e-mail]>
wrote:

> I understand your point Brian, but IMO there are enough reasons not to
> delay this work.
>
> There are many use-cases/applications where there is a stable topology of
> RSU¹s and OBU¹s. The regulations around 5.9 Ghz (DSRC) band allows the
> channel use for non-priority/non-traffic safety related applications. For
> example, a vehicle in a gas station can receive a coupon from the
> 802.11-OCB radio (AP/RSU) in the gas station. There, its a stable topology
> that classic ND is designed for. In this operating mode, its perfectly
> reasonable to use classic ND and it works. The authors have shown enough
> lab data on the same.
>
> Ideally, I agree with you that it makes lot more sense to publish both the
> specs at the same time. But, for what ever reasons the WG went on this
> path. Authors have spent incredible amount of efforts in getting the draft
> this far and we cannot ignore that. You can see the efforts from the
> version number; when did we last see a draft version -037?
>
> We also need to distill the recent ND discussions and filter out the
> threads that are clearly motivated to insert a ND protocol that is
> designed for a totally different operating environment. An argument that a
> protocol designed for low-power environments is the solution for vehicular
> environments requires some serious vetting. Looking at the
> characteristics, always-sleeping, occasional internet connectivity,
> low-power, no memory, no processing power, no mobility ..etc, meeting
> vehicular requirements is some thing most people in the WG do not get it.
>
> Bottom line, IMO, we should move this forward and publish the document.
> All we need is a simple statement in the spec which puts some scope
> limits, w.r.t the missing ND pieces and issues. There are other proposals
> in the WG that will address the gaps and bring closure to the work.
>
> Sri
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> On 4/12/19, 1:28 PM, "Brian E Carpenter" <[e-mail]>
> wrote:
>
> >On 13-Apr-19 02:59, Sri Gundavelli (sgundave) wrote:
> >>If you go back and check 2017 archives, I did raise many of these
> >>issues.  But, we clearly decided to limit the scope excluding address
> >>configuration, DAD, ND aspect, link models. When there is such a scope
> >>statement, it should clearly move these comments to the draft that
> >>defines how ND works for 802.11-OCB links.
> >
> >This is of course possible. In general the IETF hasn't done that, but has
> >followed the lead set by RFC 2464 with the complete specification of
> >IPv6-over-foo in one document.
> >
> >However, I don't believe that publishing an RFC about the frame format
> >without *simultaneously* publishing an RFC about ND etc would be a good
> >idea. That would leave developers absolutely unable to write useful
> >code, and might easily lead to incompatible implementations. Since
> >we'd presumably like Fords to be able to communicate with Peugeots,
> >that seems like a bad idea.
> >
> >Regards
> >   Brian
>
>