Re: [6lowpan] "Advertize on Behalf" flag in ARO

Hi Anders and Mukul:

For RPL, we probably need more than one bit. RPL needs a TID, and an instance ID will help quite a bit in some cases if the app is aware of it.

Other routing protocols might benefit from other information to improve their operation.

Once we figure what the abstract information is, then we'll probably have to define a way to carry that information from the host to the router.

Might be ND, but other people have already started a packetBB / RPL interwork, so at this point I do not know.

Cheers,

Pascal

http://www.xtranormal.com/watch/7011357/

From: 6lowpan-bounces@ietf.org [mailto:6lowpan-bounces@ietf.org] On Behalf Of Anders Brandt
Sent: Wednesday, March 30, 2011 8:00 AM
To: Mukul Goyal; Carsten Bormann
Cc: 6lowpan
Subject: Re: [6lowpan] "Advertize on Behalf" flag in ARO

(maybe not so surprising, )

I would like to support Mukul.

RPL is one routing protocol, but 6LoWPAN may run under any routing protocol - or none at all.

In all cases, a sleeping node can benefit from asking a neighbor router to provide connectivity to that node.
To me this definitely sounds like a feature that belongs to the 6LoWPAN ND toolbox.

Thanks,

  Anders

________________________________

Fra: 6lowpan-bounces@ietf.org på vegne af Mukul Goyal
Sendt: ti 29-03-2011 18:47
Til: Carsten Bormann
Cc: 6lowpan
Emne: Re: [6lowpan] "Advertize on Behalf" flag in ARO

Hi Carsten

>Hosts don't take part in routing protocols

I agree absolutely.

>The only source of information about reachability and network configuration a host has is ND (and DHCP for some of the latter, if present).

I agree. That's why I think 6lowpan ND should provide a mechanism to clearly identify a registered neighbor as a 6lowpan host or a 6lowpan router.

Thanks
Mukul

----- Original Message -----
From: "Carsten Bormann" <cabo@tzi.org>
To: "Esko Dijk" <esko.dijk@philips.com>
Cc: "Erik Nordmark" <nordmark@acm.org>, "Mukul Goyal" <mukul@uwm.edu>, "6lowpan" <6lowpan@ietf.org>
Sent: Tuesday, March 29, 2011 8:14:34 AM
Subject: Re: [6lowpan] "Advertize on Behalf" flag in ARO

On Mar 29, 2011, at 14:55, Dijk, Esko wrote:

> RPL reachability is indeed advertised to both 6LR/6LNs, the only distinction is that a 6LN (host) would operate as a RPL leaf node

Hosts don't take part in routing protocols, so I don't understand this sequence.
The only source of information about reachability and network configuration a host has is ND (and DHCP for some of the latter, if present).

Gruesse, Carsten

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