Wireless Access Point
220 Configuring the Wireless AP
Tunnels
This read-only window allows you to review the tunnels that have been defined
on the AP. It lists all tunnels and their settings, including the type of
authentication and the local and remote endpoints for each tunnel.
Figure 127. Tunnel Summary
About Xirrus Tunnels
Xirrus APs offer GRE (Generic Routing Encapsulation) tunneling with VLAN
support. This allows an AP to use tunnels to bridge Layer 2 traffic for one or more
SSID-VLAN pairs onto a single destination network through the Layer 3 network.
GRE tunneling is quite flexible, and can encapsulate many network layer
protocols. As a result, it can support a variety of applications. For example, a Wi-
Fi hotspot can allow guest logins and use the tunnel to give guests direct access to
the Internet, without allowing access to the local network. In a small office, you
may define a tunnel to connect users to the corporate office network. Tunnels may
also used when providing cellular offload capability.
Tunnels may be implemented with:
The Xirrus Tunnel Server (XTS)—see the Xirrus Tunnel Server User’s Guide.
For an additional discussion, see the Xirrus Tunnel Solutions Application
Note in the Xirrus Resource Center
.
VTS —see “Virtual Tunnel Server (VTS)” on page 214.
To create a tunnel, you specify the Local Endpoint, which should be one of the
AP’s wired ports, and the Primary Remote Endpoint. A Secondary Remote
Endpoint may also be specified in case of a failure at the first endpoint. Traffic for
a VLAN-SSID pair is sent in GRE encapsulated packets across the Layer 3
network from the AP to the remote endpoint. When packets arrive, the
encapsulation is stripped and the resultant packets are passed to your switch with
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