Cisco Aironet 1200 AP1231G WPA-PSK clients do not connect
For the esp-link project I tried to set my standard WLAN for the esp-link ESP-8266 ESP-01 modul. Unfortunately the ESP-8266 was unable to connect. My WLAN uses simple WPA PSK and TKIP and I did not have that connection issues before. The Cisco AP1231 access points work reliable.
After some digging and asking around with no solution I added one more access point (a TP-Link WA500G) and configured a wireless network with WPA2 PSK and AES. The ESP-8266 immediately was able to connect. This was OK for some time but why add an additional AP only for one client?
A friend then lead me to take a look at the Cisco event log and I saw many “Packet to client 18fe.34a6.ed4e reached max retries, removing the client” entries
Packet to client 10d3.8af5.16ff reached max retries, removing the client
when the ESP-8266 tried to connect to the Cisco wireless network. After some research the tip found was to increase the packet retries parameter on the Cisco AP:
AP1#enable AP1#conf t Enter configuration commands, one per line. End with CNTL/Z. AP1(config)#interface dot11radio 0 AP1(config-if)#packet retries 128 drop-packet ...
AP1#copy running-config startup-config
The Cisco radio did a reset and then I tried to connect the ESP-8266 again. This time the ESP connected successfully.
Another issue solved.
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