Re: [Roll] Opinion please

[JP Vasseur <jvasseur at cisco.com>]

On Nov 6, 2009, at 8:45 AM, Julien Abeille (jabeille) wrote:

> Hi all,
>
> To eliminate children the parent can send DIO with infinite rank right
> away? Or just resetting trickle, and starting T, which would expire
> quickly.

I think that the agreement is simply to join as a leaf if you do not  
understand the OF
(simply do not send DIO).

Cheers.

JP.

> Julien
>
> > -----Original Message-----
> > From: roll-bounces at ietf.org [mailto:roll-bounces at ietf.org] On
> > Behalf Of Michael Richardson
> > Sent: vendredi 6 novembre 2009 02:18
> > To: roll WG
> > Subject: Re: [Roll] Opinion please
> >
> >
> > > > > > > "Jerald" == Jerald P Martocci
> > <Jerald.P.Martocci at jci.com> writes:
> >   Jerald> I certainly favor the simplicity of Option 1 over
> > Option 2;
> >   Jerald> however last week we also had an Option 3 which was my
> >   Jerald> favorite - that being that the node simply does
> > not join the
> >   Jerald> DAG.  Option 1 as described, indicates that the node joins
> >   Jerald> the DAG as a leaf node.  My question is - how does a node
> >   Jerald> even know it's a leaf node?  My understanding is that DAG
> >
> >   mcr>   It knows it's a left node because it knows that it failed
> >   mcr> to find a compatible OFy.
> >
> >   Jerald> Why is this a discriminator?  The node could have other
> >   Jerald> child nodes already attached to itself prior to the node
> >   Jerald> attaching onto the DAG.  This set of nodes could
> > all ascribe
> >   Jerald> to the same OFy, yet be different that the OFx of the main
> >   Jerald> DAG.
> >
> > okay, so if a node (AA) that implements OFy picks a new
> > parent that has only OF0, it could then tell all it's
> > children that it now has OF0, and those children, expecting
> > OFy, would be in the same situation as AA.
> > It can't forward OFx, because it really doesn't understand OFx.
> >
> >   mcr>   When it's a leaf node, it does not process the DIOs that
> >   mcr> it receives, and does not forward that information (list of
> >   mcr> prefixes, etc.) to it's parent.
> >
> >   Jerald> Ok.  I assumed that to eliminate newly found children the
> >   Jerald> node would stop sending DIOs.  However, I wasn't sure if
> >   Jerald> DIOs are needed to be sent out periodically for other
> >   Jerald> reasons.
> >
> > I'm a bit vague on this myself. I think that it has to
> > unicast DIOs to it's parent.  It should not be multicasting
> > DIOs if it doesn't want to be a parent.
> >
> > --
> > ]       He who is tired of Weird Al is tired of life!
> > |  firewalls  [
> > ]   Michael Richardson, Sandelman Software Works, Ottawa, ON
> > |net architect[
> > ] mcr at sandelman.ottawa.on.ca
> > http://www.sandelman.ottawa.on.ca/ |device driver[
> >  Kyoto Plus: watch the video
> > <http://www.youtube.com/watch?v=kzx1ycLXQSE>
> > 	               then sign the petition.
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