13-2
Cisco Wireless LAN Controller Configuration Guide
OL-17037-01
Chapter 13 Configuring Hybrid REAPWireless Device Access
Overview of Hybrid REAP
Overview of Hybrid REAP
Hybrid REAP is a wireless solution for branch office and remote office deployments. It enables
customers to configure and control access points in a branch or remote office from the corporate office
through a wide area network (WAN) link without deploying a controller in each office. The
hybrid-REAP access points can switch client data traffic locally and perform client authentication
locally when their connection to the controller is lost. When they are connected to the controller, they
can also send traffic back to the controller.
Hybrid REAP is supported only on the 1130AG, 1140, 1240AG, 1250, and AP801 access points and on
the 2100 and 4400 series controllers, the Catalyst 3750G Integrated Wireless LAN Controller Switch,
the Cisco WiSM, and the Controller Network Module for Integrated Services Routers. Figure 13-1
illustrates a typical hybrid-REAP deployment.
Figure 13-1 Hybrid REAP Deployment
There is no deployment restriction on the number of hybrid-REAP access points per location. However,
the minimum bandwidth restriction remains 128 kbps with the roundtrip latency no greater than 300 ms
and the maximum transmission unit (MTU) no smaller than 500 bytes.
Hybrid-REAP Authentication Process
When a hybrid-REAP access point boots up, it looks for a controller. If it finds one, it joins the controller,
downloads the latest software image and configuration from the controller, and initializes the radio. It
saves the downloaded configuration in non-volatile memory for use in standalone mode.
A hybrid-REAP access point can learn the controller IP address in one of these ways:
• If the access point has been assigned an IP address from a DHCP server, it can discover a controller
through the regular CAPWAP or LWAPP discovery process [Layer 3 broadcast, over-the-air
provisioning (OTAP), DNS, or DHCP option 43].
Note OTAP does not work on the first boot out of the box. Refer to “The Controller Discovery
Process” section on page 7-2 for more information.
Controller
Management 10.10.99.2
AP-Manager 10.10.99.3
WLAN 99
AAA
server
WCS
Headquarters
WAN link
Branch
802.1x
DHCP server
VLAN 101
Local VLAN
Local switch
155859
Trunk port
native VLAN 100
Trunk port
native VLAN 100
Hybrid-REAP Access Points
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