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Re: [Roll] Fwd: New Version Notificationfor draft-gnawali-roll-rpl-recommendations-03.txt

"Pascal Thubert (pthubert)" <pthubert@cisco.com> Fri, 16 March 2012 08:53 UTC

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Date: Fri, 16 Mar 2012 09:52:49 +0100
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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Koojana Kuladinithi <koo@comnets.uni-bremen.de>, ROLL WG <roll@ietf.org>, Omprakash Gnawali <gnawali@cs.uh.edu>
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Subject: Re: [Roll] Fwd: New Version Notificationfor draft-gnawali-roll-rpl-recommendations-03.txt
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Hello Koojana  

I hope you're doing well : )

In your case an exponential backoff seems to make a lot of sense.

There is work about DIS tuning in http://tools.ietf.org/html/draft-goyal-roll-dis-modifications-00 

Maybe you can contribute?

Pascal

-----Original Message-----
From: roll-bounces@ietf.org [mailto:roll-bounces@ietf.org] On Behalf Of Koojana Kuladinithi
Sent: mercredi 14 mars 2012 06:14
To: 'ROLL WG'; 'Omprakash Gnawali'
Subject: Re: [Roll] Fwd: New Version Notificationfor draft-gnawali-roll-rpl-recommendations-03.txt

Hi,

I read your draft. We have done some tests with TinyRPL (RPL implementation in TinyOS) in container filled with fruits.
In one test, we had a situation that the border router (RPL root node) was disconnected for several hours. The sensor nodes start sending DIS (DIS-INTERVAL was set to 3 sec for this test). We found that this degrades the use of  battery voltage. One alternative is to use a higher value for DIS-INTERVAL.

In real deployment, the RPL root node should setup at the last, after loading all the sensors. 

I would like to know ->

Why is DIS sending at a constant interval (I am not sure this is set constant only in the implementation)? Should it be adaptive if it does not receive a DIO? 
Is this an issue ("setting of DIS INTERVAL for different cases") that your draft should address?

Kind regards

Koojana  

  

> -----Original Message-----
> From: roll-bounces@ietf.org [mailto:roll-bounces@ietf.org] On Behalf 
> Of Omprakash Gnawali
> Sent: Sunday, March 11, 2012 2:36 AM
> To: ROLL WG
> Subject: [Roll] Fwd: New Version Notification for draft-gnawali-roll- 
> rpl-recommendations-03.txt
> 
> Dear ROLL WG,
> 
> I just refreshed this draft with comments from JP, Cedric, Joakim, and 
> Ulrich. Please keep your comments coming, especially those who have 
> implemented and deployed RPL.
> 
> Thanks.
> 
> - om_p
> 
> ---------- Forwarded message ----------
> From:  <internet-drafts@ietf.org>
> Date: Sun, Mar 11, 2012 at 1:34 AM
> Subject: New Version Notification for
> draft-gnawali-roll-rpl-recommendations-03.txt
> To: gnawali@cs.uh.edu
> Cc: pal@cs.stanford.edu
> 
> 
> A new version of I-D, draft-gnawali-roll-rpl-recommendations-03.txt
> has been successfully submitted by Omprakash Gnawali and posted to the 
> IETF repository.
> 
> Filename:        draft-gnawali-roll-rpl-recommendations
> Revision:        03
> Title:           Recommendations for Efficient Implementation of RPL 
> Creation date:   2012-03-10 WG ID:           Individual Submission 
> Number of pages: 6
> 
> Abstract:
>   RPL is a flexible routing protocol applicable to a wide range of Low
>   Power and Lossy Networks.  To enable this wide applicability, RPL
>   provides many configuration options and gives implementers choices 
> on
>   how to implement various components of RPL.  Drawing on our
>   experiences, we distill the design choices and configuration
>   parameters that lead to efficient RPL implementations and operations.
> 
> 
> 
> 
> The IETF Secretariat
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> Roll@ietf.org
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