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Re: [Roll] [6tisch] Support of flow label to carry the RPL information in data packets

Fernando Gont <fernando@gont.com.ar> Thu, 17 April 2014 14:49 UTC

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Date: Thu, 17 Apr 2014 11:49:24 -0300
From: Fernando Gont <fernando@gont.com.ar>
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To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>, "6man@ietf.org" <6man@ietf.org>
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Cc: "6tisch@ietf.org" <6tisch@ietf.org>, Ines Robles <mariainesrobles@googlemail.com>, roll <roll@ietf.org>
Subject: Re: [Roll] [6tisch] Support of flow label to carry the RPL information in data packets
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Hi, Pascal,

On 04/17/2014 11:27 AM, Pascal Thubert (pthubert) wrote:
> 
> Considering the support we have at 6TiSCH and ROLL for the work, I
> published draft-thubert-6man-flow-label-for-rpl-00.txt to the 6MAN WG.
> 
> The main discussion is probably to confirm whether our proposed use of
> the flow label inside the RPL domain is compatible with the goals that
> are achieved by RFC6437. Let us continue the discussion there from now on.

I just skimmed through the I-D. Two quick questions:

1) Does your document propose/require that the Flow Label be rewritten
by some border router? -- I ask because, at the time, there was strong
opposition to this.

2) Does the algorithm/scheme with which you'll rewrite the Flow-Label
lead to predictable sequences? And/or, would the resulting values have a
uniform distribution?

Thanks!

Best regards,
-- 
Fernando Gont
e-mail: fernando@gont.com.ar || fgont@si6networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1

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