Re: [DNA] Revised FRD (Fast Router Discovery) I-D

[Syam Madanapalli <smadanapalli@gmail.com>]

Hi Brett,

I am replying little late :)

On 7/19/05, Brett Pentland <brett.pentland@eng.monash.edu.au> wrote:
> Hi JinHyeock,
> 
> I just read over your update and have a few observations.
> 
> I see you now have triggering as well as caching.  Triggering seems
> to make good sense when the AR and Point of Attachment (PoA) are
> co-located, but when they are not it seems that you are just
> reinventing RS/RA.  Compared to the host initiating the RS, you
> save one store-and-forward time in the PoA, but that doesn't seem
> like much of a saving for a new protocol.

We have implemented the sending RS from AP while an MN is associating
with it and found that the RA comes at MN faster than the cached RA
sent from AP.  We have surprised with these results. It took ~700 micro 
seconds  (0.7 ms) for an RA to reach MN from the completion of association.
And it is very easy to implement.

We were sending RA from the Router kernel to MN MAC. We are sending RA
from the router without random delay as AP sends unicast RS with TSLLAO 
option.

A host can also send an RS but it may need to employ a some logic to avoid
random delay.

-Syam