The difference between K9 and K9C in the 1800/2800/3800 series
For the 1800/2800/3800 series, there are two models, one is K9 and the other is K9C. C in K9C means Configurabule. Usually, the K9C image at the factory is Mobility Express controller software, and K9 is CAPWAP lightweight AP software. In fact, you can convert between CAPWAP AP and Mobility Express if necessary. If you unpack a 1800/2800/3800 series, you may face the following three situations.
MOBILITY EXPRESS CAPABLE
AIR-AP2802I#show version AP Image type : MOBILITY EXPRESS IMAGE AP Configuration : MOBILITY EXPRESS CAPABLE
This is the Mobility Express controller software. If you need to convert to CAPWAP, you can use the following command.
AIR-AP2802I#ap-type capwap
NOT MOBILITY EXPRESS CAPABLE
AIR-AP2802I#show version AP Image type : MOBILITY EXPRESS IMAGE AP Configuration : NOT MOBILITY EXPRESS CAPABLE
This is the Mobility Express controller software, but it works in AP mode. If you need to convert to controller, you can use the following command.
AIR-AP2802I#ap-type mobility-express
No AP Configuration field
This is CAPWAP lightweight AP software. If you need to convert to controller, you can use the following command(choose one).
AIR-AP2802I#ap-type mobility-express tftp://tftp_server/file_name AIR-AP2802I#archive download-sw /reload tftp://tftp_server/file_name
Other
When performing RMA, the K9 model will be replaced whether the AP is K9 or K9C.
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