User's Manual

Wireless Array
204 Configuring the Wireless Array
Tunnels
This read-only window allows you to review the tunnels that have been defined
on the Array. It lists all tunnels and their settings, including the type of
authentication and the local and remote endpoints for each tunnel.
Figure 118. Tunnel Summary
About Xirrus Tunnels
Xirrus Arrays offer GRE (Generic Routing Encapsulation) tunneling with VLAN
support. This allows an Array 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.
 VTS —see “Virtual Tunnel Server (VTS)” on page 200.
To create a tunnel, you specify the Local Endpoint, which should be one of the
Array’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 Array to the remote endpoint. When packets arrive, the