we see a strange message in our WLC logs, which occurs quite often (>10 times a day):
Decrypt errors occurred for client [MAC-Adress] using WPA key on 802.11b/g interface of AP [MAC-Adress]
The MAC-Adresses of the affected clients are varying as well as the APs reporting the error.
The clients are Notebooks, Cisco IP-Phones and Nokia-DualBand-Phones.
Even more frequently we see the following message in the log:
%ETHOIP-3-PING_TRANSMIT_FAILED: ethoip_ping.c:227 send_eoip_ping: Failed to tx Ethernet over IP ping rc=5.
We use TKIP as Encryption and EAP-Fast as well as LEAP as Authentication (Cisco ACS).
The WLC is an 2106, the APs are 1242AG.
We don't recognize any problems placing calls or talking over these phones. It's just these messages in the log that concern me.
Anyone else got these messages (and hopefully fixed them :))