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WLC - PoE / 802.3af
PoE / 802.3af
The question frequently comes up if APs do support 802.3af standard with non-cisco switch. It happens that radio interface are power down due to error msg similar to:
Mon Oct 2 17:47:11 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:xx:xx:xx:xx:xx:xx Cause=Radio Low Power
It is PoE neg problem with switch.
Turn off the PoE negotiation and try to power on Radio interface.
You only have 2 possibilities to solve this problem.
A.) Disable the CDP on the switch interface connected to AP.
B.) From the controller configure no power negotiation: If you are using a power injector you will have to make a configuration change on the controller as follows (e.g check Bug id CSCsc86834 in the Bug Tool )
Depending now on the version you are using please also check Bug id for commands.
For version <=3.2.78
1) configure ap power pre-standard enable <ap-name> where <ap-name> is the access point name on the controller <show ap summary>
2) configure ap power injector enable <ap-name> <switch port MAC address in xx:xx:xx:xx:xx:xx format> where <ap-name> is the access point name on the controller and <switch port MAC address> is the MAC address of the switch port to which the access point is connected)
After doing those changes, you should see on AP console port: example
- power inline negotiation injector xxxx.xxxx.xxxx - power inline negotiation prestandard source
For version =>126.96.36.199
After 188.8.131.52, option override and installed are added to "config ap power injector"; so that the MAC address of the ethernet switch is not required.
Could you please try it? Try first A.) if you are happy with A.) and it works you don't need to do B.)
Also for your reference about 802.3af / Cisco PoE support using WLC solution