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Cisco Catalyst 9130AX Series Access Points
The access point is disconnected from the controller and joins another controller. In this case, the new controller
sends its global syslog server IP address to the access point.
Whenever a new syslog server IP address overrides the existing syslog server IP address, the old address is erased
from persistent storage, and the new address is stored in its place. The access point also starts sending all syslog
messages to the new IP address provided the access point can reach the syslog server IP address.
You can configure the syslog server for access points and view the access point join information only from the controller
CLI.
Important Information for Controller-based Deployments
Keep these guidelines in mind when you use C9130AX series access point:
The access point can only communicate with Cisco wireless controllers.
The access point does not support Wireless Domain Services (WDS) and cannot communicate with WDS devices.
However, the controller provides functionality equivalent to WDS when the access point joins it.
CAPWAP does not support Layer 2. The access point must get an IP address and discover the controller using Layer
3, DHCP, DNS, or IP subnet broadcast.
The access point console port is enabled for monitoring and debug purposes. All configuration commands are
disabled when the access point is connected to a controller.
Configuring DHCP Option 43
You can use DHCP Option 43 to provide a list of controller IP addresses to the access points, enabling them to find and
join a controller.
The following is a DHCP Option 43 configuration example on a Windows 2003 Enterprise DHCP server for use with Cisco
Catalyst lightweight access points. For other DHCP server implementations, consult product documentation for
configuring DHCP Option 43. In Option 43, you should use the IP address of the controller management interface.
Note
DH CP O ption 43 is limited to one access point type per DH CP pool. You must configure a separate DH CP
pool for each access point type.
The C9130AX series access point uses the type-length-value (TLV) format for DHCP Option 43. DHCP servers must be
programmed to return the option based on the access point DHCP Vendor Class Identifier (VCI) string (DHCP Option 43).
The VCI string for the C9130AX series access point is:
Cisco AP C9130AX
The format of the TLV block is listed below:
Type—0xf1 (decimal 241)
Length—Number of controller IP addresses * 4
Value—IP addresses of the WLC management interfaces listed sequentially in hex
To configure DHCP Option 43 in the embedded Cisco IOS DHCP server, follow these steps:
Step 1
Enter configuration mode at the Cisco IO S CLI.
Step 2
Create the DH CP pool, including the necessary parameters such as default router and name server. A DH CP
scope example is as follows:
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