Hi, Yile If you happen to use compat-wireless-2012-02-27, I suggest that you do patches on that, such as airtime link metric calculation for 11n.
Regards, Chun-Yeow On Tue, Apr 24, 2012 at 1:07 AM, Yile Ku <[email protected]> wrote: > The question I have is what do mean by 'break' the connection? We have > turned off a node and it took about 20 seconds to re-route. We can try the > 'plink_action block' next and see how long it takes to re-route. > > Y- > > > On Mon, Apr 23, 2012 at 10:58 AM, Javier Cardona <[email protected]> wrote: >> >> Hi David, >> >> On Mon, Apr 23, 2012 at 9:37 AM, David Fulgham >> <[email protected]> wrote: >> > We've been playing with the idea of a mobile 802.11s mesh for a while, >> > since we have a mesh through out an entire community we would like to >> > be able to use it for voice, etc. The problem is that when a node >> > moves through the network it leaves remnant of itself throughout the >> > network. I.e. nodes will attempt to use the mobile node if it >> > happened to result in the best path to a given destination at some >> > point in time. We found that the timeouts for path eliminations even >> > when we reduced the timeouts were not responding to the changes fast >> > enough. >> >> Establishing a peer link is costlier than establishing a path through >> the mesh (specially if security is used). For that reason, peer links >> stay around longer, while paths change more rapidly in response to >> topology changes. So the fact that you see peer links long after a >> particular peer has moved away is not necessarily a problem. >> >> To test mobility, I would recommend using the simulated device driver >> mac80211_hwsim. With it you can make and break topologies in real >> time and see how the 802.11s protocol responds. >> For instance, one of our regression tests is as follows: >> >> 1. Establish a topology like: >> >> # 1 - 2... n-2 - n-1 >> # \------n------/ >> >> 2. Ping from 1 to n-1, confirm that traffic flows through n >> 3. Disconnect n from the network >> 4. Measure how long until traffic is re-routed through 2-..-n-2 >> >> With n=5 we observe a path recovery in less than 0.7 sec. >> >> Cheers, >> >> Javier >> >> >> > >> > On Mon, Apr 23, 2012 at 12:29 PM, Yile Ku <[email protected]> wrote: >> >> I am looking for someone who can answer questions related to: >> >> 802.11s mobility. Nodes moving relative to one another, how fast >> >> routes >> >> across the mesh converge >> >> Power control, how to get the maximum amount of power from the cards we >> >> are >> >> using (Mikrotek) >> >> Parameter configuration for mesh networks. >> >> >> >> Thx, >> >> Y- >> >> >> >> >> >> On Mon, Apr 23, 2012 at 9:45 AM, David Fulgham >> >> <[email protected]> >> >> wrote: >> >>> >> >>> We've been deploying 802.11s in a "wide area" network covering roughly >> >>> 3-4km.sq. and would be available to consult if required. >> >>> >> >>> David Fulgham >> >>> Mnemonics.ca >> >>> www.mnemonics.ca >> >>> >> >>> On Mon, Apr 23, 2012 at 11:00 AM, Yile Ku <[email protected]> >> >>> wrote: >> >>> > Anyone besides Cozybit do consulting for 802.11s? I am interested >> >>> > in a >> >>> > guru >> >>> > since we need some questions answered quickly and thoroughly. >> >>> > Y- >> >>> > >> >>> > _______________________________________________ >> >>> > Devel mailing list >> >>> > [email protected] >> >>> > http://lists.open80211s.org/cgi-bin/mailman/listinfo/devel >> >>> > >> >>> _______________________________________________ >> >>> Devel mailing list >> >>> [email protected] >> >>> http://lists.open80211s.org/cgi-bin/mailman/listinfo/devel >> >> >> >> >> >> >> >> _______________________________________________ >> >> Devel mailing list >> >> [email protected] >> >> http://lists.open80211s.org/cgi-bin/mailman/listinfo/devel >> >> >> > _______________________________________________ >> > Devel mailing list >> > [email protected] >> > http://lists.open80211s.org/cgi-bin/mailman/listinfo/devel >> >> >> >> -- >> Javier Cardona >> cozybit Inc. >> http://www.cozybit.com >> _______________________________________________ >> Devel mailing list >> [email protected] >> http://lists.open80211s.org/cgi-bin/mailman/listinfo/devel > > > > _______________________________________________ > Devel mailing list > [email protected] > http://lists.open80211s.org/cgi-bin/mailman/listinfo/devel > _______________________________________________ Devel mailing list [email protected] http://lists.open80211s.org/cgi-bin/mailman/listinfo/devel
