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Re: [lp-wan] IID computation for SCHC over LoRaWAN

Olivier Gimenez <ogimenez@semtech.com> Tue, 21 January 2020 08:24 UTC

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From: Olivier Gimenez <ogimenez@semtech.com>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>, "dominique.barthel@orange.com" <dominique.barthel@orange.com>, lp-wan <lp-wan@ietf.org>
Thread-Topic: [lp-wan] IID computation for SCHC over LoRaWAN
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Date: Tue, 21 Jan 2020 08:24:39 +0000
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Subject: Re: [lp-wan] IID computation for SCHC over LoRaWAN
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From: Pascal Thubert (pthubert) <pthubert@cisco.com>

I hope it’s not too much effort for something that never happens!

Dear,

I think that this comment says everything. Collision risk is 1/(2^64) = 5.42e-20
In comparison with Aerospace industry: in software (DO178<https://en.wikipedia.org/wiki/DO-178B>) and hardware (DO254<https://en.wikipedia.org/wiki/DO-254>), a DAL A event (Catastrophic - Failure may cause a crash) should be lower than 1e-9 per hour.

Best regards
Olivier

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