D-Link DWC-2000 User Manual - Page 72

Section 4 - Advanced WLAN Configuration Distributed Tunnel The Distributed Tunneling mode, also known as AP‐AP tunneling mode, is used to support L3 roaming for wireless clients without forwarding any data traffic to the wireless controller. In the AP‐AP tunneling mode, when a client first associates with an AP in the wireless system, the AP forwards its data using the VLAN forwarding mode. The AP to which the client initially associates is the Home AP. The AP to which the client roams is the Association AP. When a client roams to another AP in a different subnet the Association AP tunnels all traffic from the client to the Home AP using a CAPWAP L2 tunnel. The Home AP injects the traffic received over the tunnel into the wired network. If a client roams to another AP in the same subnet then the tunnel is not created, and the new AP becomes the Home AP for the client. Configure Distributed Tunnel Path: Wireless > General > Distributed Tunnel 1. Click Wireless > General > Distributed Tunnel. 2. Configure the following settings: • Distributed Tunnel Clients - Specify the maximum number of distributed tunneling clients that can roam away from the Home AP at the same time. • Distributed Tunnel Idle Timeout - Specify the number of seconds of no activity by the client before the tunnel to that client is terminated and the client is forced to change its IP address. • Distributed Tunnel Timeout - Specify the number of seconds before the tunnel to the roamed client is terminated and the client is forced to change its IP address. • Distributed Tunnel Max Multicast Replications Allowed - Specify the maximum number of tunnels to which a multicast frame is copied on the Home AP. 3. Click Save. D-Link DWC-2000 User Manual 72