07-02-2013 03:19 AM - edited 07-04-2021 12:19 AM
Hello,
On a wifi installation, some devices seem to lose connectivity sometimes. The interuption is very quick but significant for their applications.
The controller is a Cisco WLC5508 with the release 7.4.100.60 and the access points are Cisco 1242 (with two external antennas) and 1602.
APs are in Flexconnect mode, and SSID security is in WPA2/PSK.
I don't see any problem with my HP laptop, but with Samsung Galaxy Tab or LXE devices the problem is present.
In the message logs, i found this frequently :
*apfReceiveTask: Jul 01 11:50:17.521: #LWAPP-3-INVALID_AID2: spam_api.c:1357 Association identifier 9 for client 00:26:37:d5:fe:ba is already in use by 00:26:37:ed:0f:1a
And this :
*Dot1x_NW_MsgTask_4: Jul 01 10:01:02.144: #DOT1X-3-INVALID_WPA_KEY_MSG_STATE: 1x_eapkey.c:861 Received invalid EAPOL-key M2 msg in START state - invalid secure bit; KeyLen 24, Key type 1, client 00:26:c6:07:98:44
But i'm not sure that these logs occur a connectivity lost.
Is anyone had roaming issues with this configuration?
Thanks by advance for any response.
07-02-2013 04:54 AM
Can you post the show run-config
Thanks,
Scott
Help out other by using the rating system and marking answered questions as "Answered"
07-02-2013 05:09 AM
07-02-2013 05:19 AM
Try not to have both WPA and WPA2 setup. Either use WPA/TKIP or WPA2/AES
This is for your SSID: INTERNAL
Wi-Fi Protected Access (WPA/WPA2)............. Enabled
WPA (SSN IE)............................... Enabled
TKIP Cipher............................. Enabled
AES Cipher.............................. Disabled
WPA2 (RSN IE).............................. Enabled
TKIP Cipher............................. Disabled
AES Cipher.............................. Enabled
Thanks,
Scott
Help out other by using the rating system and marking answered questions as "Answered"
07-02-2013 05:25 AM
Also you should only use channel 1, 6, 11 on the 2.4ghz. Looks like you also have channel 5 and 13.
Thanks,
Scott
Help out other by using the rating system and marking answered questions as "Answered"
07-02-2013 05:28 AM
One thing to note also in a mixed environment with 802.11n and non 802.11n access points. 802.11n clients will prefer to always roam to an 802.11n access point, thus may never try to roam to a non 802.11n access point until it drops. Keep that in mind since I don't know how your environment is. You are better off keeping all 802.11n aps together and non 802.11n aps together. If you do mix, then disable 802.11n.
Thanks,
Scott
Help out other by using the rating system and marking answered questions as "Answered"
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide