Cisco Cisco Aironet 1522 Lightweight Outdoor Mesh Access Point 디자인 가이드

CAPWAP is the provisioning and control protocol used by the controller to manage access points (mesh 
and non-mesh) in the network. In release 5.2, CAPWAP replaces LWAPP.

Upgrading from an earlier LWAPP release (4.1.x.x or earlier) to release 5.2 is transparent. CAPWAP 
supports path maximum transmission unit (MTU) discovery and it is configurable on switches and 
routers in the backbone network.

Mesh features are not supported on controller releases 5.0 and 5.1.

CAPWAP is becoming the protocol of choice to manage access points. It reduces capital expenditures 
(CapEx) and operational expenses (OpEx) significantly, enabling the Cisco wireless mesh networking 
solution to be a cost-effective and secure deployment option in enterprise, campus, and metropolitan 
networks.

CAPWAP discovery on a mesh network follows these steps:

A mesh access point establishes a link before starting CAPWAP discovery. Whereas, a non-mesh 
access point starts CAPWAP discovery using a a static IP for the mesh access point, if any.

The mesh access point initiates CAPWAP discovery using a static IP for the mesh access point on 
the layer 3 network or searches the network for its assigned primary, secondary or tertiary controller. 
Ten attempts are made to connect.

The mesh access point searches a list of controllers configured on the access point (primed) 
during setup.

If step 2 fails after 10 attempts, the mesh access point falls back to DHCP and attempts to connect 
in ten tries.

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