ZyXEL Communications NWA-3550, User Manual

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Chapter 5 Management Mode
NWA-3500/NWA-3550 User’s Guide
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Note: The NWA can be a controller AP, standalone AP (default) or a CAPWAP
managed AP.
5.2.1 CAPWAP Discovery and Management
The link between CAPWAP-enabled access points proceeds as follows:
1
An AP in managed AP mode joins a wired network (receives a dynamic IP
address).
2
The AP sends out a management request, looking for an AP in CAPWAP AP
controller mode.
3
If there is an AP controller on the network, it receives the management request. If
the AP controller is in
Manual mode it adds the details of the AP to its
Unmanaged Access Points list, and you decide which available APs to manage.
If the AP is in Always Accept mode, it automatically adds the AP to its Managed
Access Points list and provides the managed AP with default configuration
information, as well as securely transmitting the DTLS pre-shared key. The
managed AP is ready for association with wireless clients.
5.2.2 CAPWAP and DHCP
CAPWAP managed APs must be Dynamic Host Configuration Protocol (DHCP)
clients, supplied with an IP address by a DHCP server on your network.
Furthermore, the AP controller must have a static IP address; it cannot be a DHCP
client.
5.2.3 CAPWAP and IP Subnets
By default, CAPWAP works only between devices with IP addresses in the same
subnet (see the appendices for information on IP addresses and subnetting).
However, you can configure CAPWAP to operate between devices with IP
addresses in different subnets by doing the following.
• Activate DHCP option 43 on your network’s DHCP server.
• Configure DHCP option 43 with the IP address of the CAPWAP AP controller on
your network.