Cisco Cisco Aironet 1200 Access Point 릴리즈 노트

A system software upgrade sometimes fails when you use Microsoft Internet Explorer version 5.01 SP2 
to upgrade system software using the HTTP Upgrade page in the web-browser interface. Use a later 
version of Microsoft Internet Explorer to perform HTTP system software upgrades, or use TFTP to 
upgrade system software. Click this URL to browse to the Cisco IOS Software Configuration Guide for 
Cisco Aironet Access Points for complete instructions on performing software upgrades:

When the Ethernet port is disabled on an 1100 series access point running boot loader version 12.2(4)JA, 
the access point boots into monitor mode when it reboots. To avoid this problem, connect the access 
point Ethernet port to one of the following:

a wired LAN

the Ethernet port on a PC

Remove power from the access point and reapply power to reboot the unit. When the access point senses 
an Ethernet connection, it boots normally.

During client authentication, the access point sometimes receives a corrupt EAP packet and displays this 
error message:

Oct  1 09:00:51.642 R: %SYS-2-GETBUF: Bad getbuffer, bytes= 28165

-Process= "Dot11 Dot1x process", ipl= 0, pid= 32

-Traceback= A2F98 3C441C 3C7184 3C604C 3C5E14 3C5430 124DDC

You can ignore these messages.

When you configure TKIP-only cipher encryption (not TKIP + WEP 128 or TKIP + WEP 40) on any 
radio interface or VLAN, every SSID on that radio or VLAN must be set to use WPA or CCKM key 
management. If you configure TKIP on a radio or VLAN but you do not configure key management on 
the SSIDs, client authentication fails on the SSIDs.

Cisco CKM (CCKM) key management is designed to support voice clients that require minimal roaming 
times. To date, CCKM supports only Spectralink Wireless Phones. Other voice clients have not been 
tested with CCKM and are not supported.