Cisco Cisco 2106 Wireless LAN Controller

An access point can be powered by a Cisco prestandard 15-watt switch with Power over Ethernet (PoE) 
by entering this command:

config ap power pre-standard {enable | disable} {all | Cisco_AP}

A Cisco prestandard 15-watt switch does not support intelligent power management (IPM) but does have 
sufficient power for a standard access point. The following Cisco prestandard 15-watt switches are 
available:

AIR-WLC2106-K9

WS-C3550, WS-C3560, WS-C3750

C1880

2600, 2610, 2611, 2621, 2650, 2651

2610XM, 2611XM, 2621XM, 2650XM, 2651XM, 2691

2811, 2821, 2851

3631-telco, 3620, 3640, 3660

3725, 3745

3825, 3845

The enable version of this command is required for full functionality when the access point is powered 
by a Cisco prestandard 15-watt switch. It is safe to use if the access point is powered by either an IPM 
switch or a power injector or if the access point is not using one of the 15-watt switches listed above.

You might need this command if your radio operational status is “Down” when you expect it to be “Up.” 
Enter the show msglog command to look for this error message, which indicates a PoE problem:

Apr 13 09:08:24.986 spam_lrad.c:2262 LWAPP-3-MSGTAG041: AP 00:14:f1:af:f3:40 is unable to 

verify sufficient in-line power. Radio slot 0 disabled.

Cisco Aironet CB21AG client adapters support only this CCKM configuration setting: WPA + TKIP + 
authentication key management CCKM.

The VCI string for DHCP option 60 on 1500 series access point changes to Cisco AP c1500 after the 
access points are upgraded to controller software release 4.1.185.0.

The AP1000 performs radar detection on channels that do not require it (such as channel 36). If the 
access point detects radar on these channels, the controller captures it in log messages.