D-Link DWS-3160-24TC Reference Manual page 401

DWS-3160 Series Gigabit Ethernet Unified Switch Web UI Reference Guide
L3 Tunnel
L3 Tunnel Status
L3 Tunnel Subnet
L3 Tunnel Mask
RADIUS Use Network
Configuration
RAIDUS Accounting
Security Option
2. If the network has peer switches and the tunnel is established between
the APs managed by the peer switches then, when a switch managing
the home AP fails, the switch managing the association AP detects the
failure and terminates the tunnel. At this point the client is
disassociated. When the client re-associates it obtains a new IP
address.
3. If the switch managing the association AP fails, then the scenario is the
same as in item 1 above. The AP takes down all radios and the clients
disassociate.
The L3 Tunnel feature allows mobile stations to maintain their IP connections while
roaming from one access point to another access point even when these access
points are attached to different IP subnets.
NOTE: When L3 tunneling is enabled the VLAN ID is not used. In fact, the switch
puts the management VLAN ID, if any, on the tunneled packets.
NOTE: If the wireless network topology changes (for example, a Unified Switch
reboots) while the L3 tunneling feature is in use, you should perform an
ARP refresh on wired clients to speed up the process of re-establishing
connectivity to the tunneled network.
Display the status of L3 tunnel.
Enter the subnet of L3 tunnel. The network IP address you enter in this field must
be in the same subnet as a routing interface for the WLAN on the Switch.
Enter the subnet mask for the network IP address on the L3 Tunnel subnet.
This parameter is used to control whether the VAP uses the network or global
RAIDUS Accounting settings. Select Enable to use RADIUS accounting settings
defined on the Wireless Network Configuration page. Select Disable to use
RADIUS accounting settings defined on the Wireless Global Configuration page.
Tick the check box to enable RADIUS accounting for wireless clients.
Select the security mechanism of the wireless connection to protect the network.
None Select this for not having any security of the network, and no further
options are configurable on the AP.
396