[Olsr-dev] Client Roaming Plugin

marc fawzi (spam-protected)
Tue Jan 26 22:50:40 CET 2010

Hi Markus

i discussed this stuff today with henning,..

any update on when to expect this functionality in olsr? (namely, moving
between access points without losing a voip connection)

On Fri, Jan 22, 2010 at 10:04 AM, Markus Kittenberger <
(spam-protected)> wrote:

> i discussed this stuff today with henning,..
> after discussing about various options that are quite complex #2, henning
> found a very simple one, which will work nearly as well,..
> just send one (or maybe 2-3) hnas #1 with the minimal valid validity time
> (~ 1/16 second) at the old master (as soon as he knows he is the old master
> (probably because he received a hna-message from the new master))
> this will update (the validity time) and in fact delete the old hna entry
> quite fast in the whole mesh
> in some cases there might be loops, but in most cases everything works fine
> (and fast)
> On Wed, Jan 20, 2010 at 10:49 PM, Raphael <(spam-protected)> wrote:
>> Hi everybody
>> I still have some issues with the update on routes because the nodes
>> do not communicate directly.
>> I need help with adding new olsrd messages so that changing routes is
>> fast enough to maintain voip-connections.
> beside the hnas to announce(and "delete") the client
> i think you need an additional message type, to announce the mac of the
> client, so that new new master will (be able to identify) and use the same
> ip for its hna as the old one,
> (or you calculate the ip from the mac-address)
> Markus
> #1 the normal hnas could even run at normal (or better quite normal) hna
> interval (and contain the maybe existing static hnas this node has aswell)
> (it still would be better to seperate the static hnas from the dynamic
> "client" ones, as different vtimes still make sense,..)
> BUT the "deletion" hnas should clearly only contain the the hna for this
> single client.
> #2 the complex solutions with tcs of virtual nodes, slowly changing link
> costs and a tunnel between old and new master try to
> A work aorund intermittent loops
> -> but it might be better to start with a simple approach to find out how
> many loops will actually happen *G
> B the fact that an hna can`t be deleted
> -> and sending hna messages to reduce the actual validity time of this hna
> to 1/16 second, is extremely close to being able to delete it directly
> ---> it makes no sense to complicate things to gain 1/16 second
> --
> Olsr-dev mailing list
> (spam-protected)
> http://lists.olsr.org/mailman/listinfo/olsr-dev
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