Re: [Roll] [roll] #86: G flag: do we need that text?

Mukul Goyal <mukul@uwm.edu> Wed, 04 April 2012 13:54 UTC

Date: Wed, 04 Apr 2012 08:54:52 -0500
From: Mukul Goyal <mukul@uwm.edu>
To: Richard Kelsey <richard.kelsey@ember.com>
Message-ID: <1574412879.1807702.1333547692001.JavaMail.root@mail17.pantherlink.uwm.edu>
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Subject: Re: [Roll] [roll] #86: G flag: do we need that text?
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>The G flag is 0 if and only if the DODAG is floating.

I think that the G flag is 1 if and only if the DODAG is grounded. The temporary DAGs used in P2P-RPL are not grounded, they are temporary. I think that all transient/temporary DAGs are floating by their very nature.

Thanks
Mukul

----- Original Message -----
From: "Richard Kelsey" <richard.kelsey@ember.com>
To: roll@ietf.org
Cc: mukul@UWM.EDU, jpv@cisco.com, roll@ietf.org
Sent: Wednesday, April 4, 2012 8:36:50 AM
Subject: Re: [Roll] [roll] #86: G flag: do we need that text?

> From: roll issue tracker <trac+roll@trac.tools.ietf.org>
> Date: Wed, 4 Apr 2012 13:08:50 +0000
> 
> #86: G flag: do we need that text?
> 
>  Problem (resolition is proposed)
>  ------------------------------
>  Disagreement on the meaning of 'G' bit and imposed setting to 0;
> 
>  Proposed resolution
>  ---------------------------
>  The origin sets the G flag based on its perception of whether joining
>  how the flag's value would affect the rank calculation under the OF
>  being used. By default, the G flag is set to zero given the temporary
>  nature of the DAG being created.

I disagree with the proposed resolution.  It adds needless
confusion.  The G flag is 0 if and only if the DODAG is floating.
There is no point to allowing floating DODAGs with a P2P-RDO
option.  I suggest that the G bit be set to 1 and that routers be
explicitly prohibited from creating floating DODAGs with a
P2P-RDO option.
                                   -Richard Kelsey

[Roll] [roll] #86: G flag: do we need that text? roll issue tracker
Re: [Roll] [roll] #86: G flag: do we need that te… roll issue tracker
Re: [Roll] [roll] #86: G flag: do we need that te… Richard Kelsey
Re: [Roll] [roll] #86: G flag: do we need that te… Mukul Goyal
Re: [Roll] [roll] #86: G flag: do we need that te… Pascal Thubert (pthubert)
Re: [Roll] [roll] #86: G flag: do we need that te… Mukul Goyal
Re: [Roll] [roll] #86: G flag: do we need that te… Richard Kelsey
Re: [Roll] [roll] #86: G flag: do we need that te… Mukul Goyal
Re: [Roll] [roll] #86: G flag: do we need that te… Mukul Goyal
Re: [Roll] [roll] #86: G flag: do we need that te… Richard Kelsey
Re: [Roll] [roll] #86: G flag: do we need that te… Pascal Thubert (pthubert)
Re: [Roll] [roll] #86: G flag: do we need that te… Mukul Goyal
Re: [Roll] [roll] #86: G flag: do we need that te… Michael Richardson
Re: [Roll] [roll] #86: G flag: do we need that te… Philip Levis
Re: [Roll] [roll] #86: G flag: do we need that te… Pascal Thubert (pthubert)
Re: [Roll] [roll] #86: G flag: do we need that te… Mukul Goyal
Re: [Roll] [roll] #86: G flag: do we need that te… Pascal Thubert (pthubert)
Re: [Roll] [roll] #86: G flag: do we need that te… Mukul Goyal
Re: [Roll] [roll] #86: G flag: do we need that te… Pascal Thubert (pthubert)
Re: [Roll] [roll] #86: G flag: do we need that te… roll issue tracker
Re: [Roll] [roll] #86: G flag: do we need that te… roll issue tracker
Re: [Roll] [roll] #86: G flag: do we need that te… roll issue tracker
Re: [Roll] [roll] #86: G flag: do we need that te… JP Vasseur