I've have had first hand experience with the flakiness in real radios both
802.11 and other. Multicast vs Unicast is supported differently with
different radio models and behavior is also often different. Hell it can
be a challenge just to get radios to sync on the same mac ssid and keep
them there. I stand by my point that bi-directional checks are a minimum
for getting things at least somewhat logically sane. Having another
mechanisms for checking connectivity nhdp/dlep/wifidriver would negate the
need for the check, and would likely provide better information/routes.
The trick would be making this more efficient mode well defined using
clearly defined AODVv2 use bi-directional neighbor table (populated with
whatever discovery mechanism one wishes)
This paper from 2007 documents the issues of asymmetric link
characteristics quite clearly.
http://www.sciencedirect.com/science/article/pii/S1570870505001149
I've made my issues known here and proposed ways to address them. Once the
new draft is out I'll be posting comments to the manet list as this is a WG
document and if consensus is going to be reached it will have to happen
there.
Justin Dean
On Fri, Jun 26, 2015 at 2:19 PM, Victoria Mercieca <vmercieca0@xxxxxxxxx>
wrote:
Hi everyone,
I apologise, I have not found time today to work on this. If anybody
wishes to suggest text for the RREP multicast approach while I am away,
I'll be happy to cut and paste it in on the Monday before the deadline.
Same goes for any text we need to add for the gateway topic. Failing that,
I can look at the RREP stuff on the Sunday when I get back if I need to.
In case there's any reason you need to generate a draft, I'm attaching the
current version of my working directory with the pandoc files. Info from
//www.freelists.org/post/aodvv2-discuss/Fwd-manet-ID-Action-draftietfmanetaodvv209txt,1
should
all still apply from the last time I sent the zip file out. Also, I'll
probably still check emails from time to time if you need anything.
Kind regards,
Vicky.
On Thu, Jun 25, 2015 at 10:04 AM, John Dowdell <john.dowdell486@xxxxxxxxx>
wrote:
Good morning all
As you all know, draft submission cut off time is 2359 UTC on Monday 6
July (= 0059 July 7 in UK). Vicky is on holiday next week, and Lotte is
fast approaching (if not already in) exam time, which means we need to go
firm on two topics currently under discussion by the time Vicky starts work
at 0900 UK time tomorrow (so that's 0100 Friday for Charlie, 0400 Stan and
1000 Lotte) in order for Vicky to make final substantive changes. Any
remaining scraps can be tidied up on the Monday 6th when Vicky returns from
holiday and we can submit.
I believe Working Group Last Call does not mean we can't make any more
changes. You'll have seen (and some of you have lived) the changes to DLEP
as it went through and following the last call period. We still haven't had
a great deal of feedback from the working group which means they're either
busy, don't have an opinion, or are ok with it, but regardless we still
need to plough on and come to consensus for now. Details can still be
worked on, and indeed I was just discussing with Vicky the prospect of an
author team call while most of us are at Prague.
So the two topics are gateways and routes to neighbours.
I'm not going to direct the outcome, that wouldn't be fair, but I need
you all to come to a position of "good enough for now", to arrive at a
document that we can all defend at Prague, and that position needs to be
arrived at by the time mentioned above. This may mean each of you need to
concede on certain points of detail, perhaps against your better judgement,
but it won't be the last time we can change things.
I'm really pleased with the progress, we have come a long way. Let's work
together to get these last points agreed (for now) and written up.
Thanks and Best Regards
John
