I'm running Cisco Aironnet 1040 series routers and all my Apple computers (NOT iPhones or iPads just the computers) continue to get dropped by the routers. The time ranges anywhere from less than a minute to an hour, depending how many clients are connected. I have no trouble at all with any mobile devices and none with non apple computers. This has been going on since we've bought them last year. I'm trying to use WPA authentication. I've read forums and places where you can use MAC authentication and the problem seems to go away. That's not an ideal option for as many clients as I have on the network. I've attempted to update the software, revert the software and reset to default. Nothing has made any difference at all. I've also tried changing the channel it broadcasts on, with no luck. I've double checked the firmware on the Apple computers and they are up to date. My configuration is below.....Any ideas on what I can change or do I need to pursue a different router that isn't Cisco?
That is sad to hear, have you treid the other combination (i mean wpa with TKIP alone) by removing wpa2. May be your devices have been configured with WPA/TKIP combination rather than WPA2/AES combination. Also you could remove "world-mode legacy" from under int dot11 0 if you dont have clients devices from multiple countries connecting to it.
Going through the logs I see the MAC addresses of my computers that are disconnected with it saying:
*Mar 17 18:19:55.169: %DOT11-4-MAXRETRIES: Packet to client 74e5.43cf.b184 reached max retries, removing the client
*Mar 17 18:19:55.175: %DOT11-4-MAXRETRIES: Packet to client c09f.4227.2cfc reached max retries, removing the client
*Mar 17 18:19:55.179: %DOT11-4-MAXRETRIES: Packet to client 80c1.6e1c.ef26 reached max retries, removing the client
Not sure if that helps at all or not. I see plenty of logs showing my computer connecting just fine and moving from one AP to another but it appears to timeout (rather quickly I might add) and drop the connection. So it's obviously something with the router. I can always connect right back to the network without a problem. It doesn't ask for a password or anything.
I'm currently working with their tech support on this. I've got the lead engineer on it currently. After a month we have discovered it's an issue with the qos mode wmm. If you run the commands
Config t Int d0 No dot11 qos mode
The problem of disconnecting goes away but so do the n rates. I'm honestly looking at disabling the wmm on all my routers for the time being and looking to go with a different wireless router. If we discover a true solution, I will update this thread.
IntroductionHow to use the Wireless LAN Controller Configuration Analyzer (WLCCA)
Javier Contreras is a Senior Tech Lead for the Wireless Business Unit in Cisco, with over 2 decades of experi...
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(#)For this reason being that : - application that doesn't use multicast, sends one copy of each packet ( data unit of traffic at layer 3 ) to each client (" who seeks the traffic ).- application that does use multicast, sends ...
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...