Hi Carsten,
Thanks for your mail.
Please see inline.
Ciao
L.
> On 17 Feb 2022, at 11:11, Carsten Bormann <[email protected]> wrote:
>
> On 2021-12-14, at 10:09, Luigi Iannone <[email protected]> wrote:
>>
>> While we believe that the document is becoming mature, we still welcome any
>> feedback people can send us.
>
> I haven’t read the new version,
You should. We did a lot of improvements ;-)
> but I stick with the observation that the problem/opportunity addressed is
> already solved with 6lo header compression (and will be more so once we have
> SCHC header compression in 6lo),
Yes, the 6lo header compression is suitable in general for all IoT scenarios.
However, this draft is targeting at scenarios and applications with static
network topology and stable network connections.
In those cases, the NSA could bring in even shorter packet header (addressing)
and _more_ importantly much simpler (stateless) forwarding mechanism, which
will further saves the power consumption of the IoT system.
> and NSA does not have the same desirable properties with respect to
> preserving IPv6 semantics that the header compression solutions have.
Can you articulate a bit more? Exactly which “desirable property” is present in
HC but not in NSA.
I can provide an example of the other way around, NSA provides stateless
forwarding, HC does not do that.
The new version of the document (read it :-) ) provides all the details on the
operations to be performed on the gateway to translate from NSA to IPv6 and
vice versa.
>
> Right now, I would like us to focus on making the SCHC solution really good.
I am also willing to help, but one does not exclude the other...
> In the end, that may not look very different on the wire from NSA (as far as
> addresses are concerned — SCHC of course can do more).
We are coding the simulator exactly to quantify the differences. In certain
scenarios NSA provide some advantage.
But do not forget the second important property: stateless forwarding, we
believe it is not negligible.
Ciao
L.
> Grüße, Carsten
>
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