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The Controller Discovery Process - Cisco Catalyst 9130AX Series Getting Started Manual

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Cisco Catalyst 9130AX Series Access Points
1 1
Pow ering the Access Point
Always connect the antennas to the C9130AXE before powering the AP up. Enabling the AP radios without
Note
connecting the antennas can result in damage to the AP.
The AP can be powered only through Power-over-Ethernet (PoE) using the following:
802.3at (PoE+): Any 802.3at (30.0 W) compliant switch port or Cisco Power Injector AIR-PWRINJ6=
802.3af: Any 802.3af (15.4 W) compliant switch port or Cisco Power Injector AIR-PWRINJ5=
Note
If 802.3af is used, both the 2.4 GH z and 5 GH z radios will be reduced to 1x1 and Ethernet will be
downgraded to 1 GbE. The USB port will also be off.
802.3bt: Any 802.3bt compliant switch port
Cisco Universal PoE (Cisco UPOE)
1 2
Configuring and Deploying the Access Point
This section describes how to connect the access point to a controller. Because the configuration process takes place
on the controller, see the Cisco Wireless Controller Configuration Guide for additional information.

The Controller Discovery Process

Note
The controller must be running release 8.9.111.0 or IO S-XE 16.12.1 to support C9130AXI or 8.10.105.0
or IO S-XE 16.12.2 to support C9130AXE. For more information, visit the access point data sheet
available on Cisco.com at
https://www.cisco.com/c/en/us/products/collateral/wireless/catalyst-9100ax-access-points/guide-c07-742311.
html.
You cannot edit or query any access point using the controller CLI if the name of the access point contains
a space.
M ake sure that the controller is set to the current time. If the controller is set to a time that has already
occurred, the access point might not join the controller because its certificate may not be valid for that
time.
Access points must be discovered by a controller before they can become an active part of the network. The access
point supports these controller discovery processes:
Locally stored controller IP address discovery—If the access point was previously joined to a controller, the IP
addresses of the primary, secondary, and tertiary controllers are stored in the access point non-volatile memory. This
process of storing controller IP addresses on an access point for later deployment is called priming the access point.
For more information about priming, see the
DHCP server discovery—This feature uses DHCP option 43 to provide controller IP addresses to the access points.
Cisco switches support a DHCP server option that is typically used for this capability. For more information about
DHCP option 43, see the
"Performing a Pre-Installation Configuration" section on page
"Configuring DHCP Option 43" section on page
32.
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24.

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