Re: [Madwifi-devel] IBSS BSSID fix for large networks - 400 nodes
Status: Beta
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From: Daniel W. <da...@uc...> - 2007-07-04 22:31:32
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I haven't looked at the dfs branch yet, so I'll start looking at that and see what is done/isn't done. I'm not too familiar with the dfs functionality, but will read up on the sp= ecs. I wonder if the standard ever considered synchronizing 400 nodes that are a= ll within range of each other. 54Mbps(more like 24Mbps)/400 doesn't give very much bandwidth... Can you tell me or point me to some info on what's being considered for the DFS branch? thanks, --Daniel On 7/4/07, Benoit PAPILLAULT <ben...@fr...> wrote: > Daniel Wu a =E9crit : > > Have you looked at ticket 1033 and 1093 to see how those patches > > help in your 400 node network? > > http://madwifi.org/ticket/1033 > > http://madwifi.org/ticket/1033 > > > > I like to try and help pinpoint the problem(s) and fix em. > > I have about 3 more days of free time before I get back to "real" work, > > so I like to try and get this IBSS/adhoc mode stuff fixed once and for = all. > > > > (disclaimer: I haven't tried either patch, but will do so next week) > > > > > I'd like to comment on the IBSS merge & the fix provided. First of all, > 802.11 standards does not requires that IBSSID be linked to the MAC > addr, it can just be random. Computing a hash on the BSSID is a nice > optimization to have all nodes in the same IBSS to instantly converges > on the same IBSSID. However, there are another issue that is linked to > IBSS merge : beacon generation needs to be synchronized & shared. > Otherwise, if you have 400 nodes in range, they will broadcast 4000 > beacons per seconds instead of 10! > > I'm currently working on beacon generation for the DFS branch (it > currently generates some errors, especially in IBSS mode) and to merge > the patch provided in #1033. How can we synchronize our efforts? > > Best regards, > Benoit > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Madwifi-devel mailing list > Mad...@li... > https://lists.sourceforge.net/lists/listinfo/madwifi-devel > |