Appendix C: L3 Roaming Example; Configuring The Wlan And Tunnel Interfaces; Figure 109:Example Of A Network With L3 Tunnel Subnet - D-Link DWS-3000 Series User Manual

Software User Manual
02/15/2011
A pp en di x C : L 3 R oa m i ng E xam pl e
L3 Roaming can be achieved by using VLAN trunking (associate the SSID with a VLAN) or by using an L3 Tunnel (associate
the SSID with a tunnel subnet). The example in this appendix describes how to configure a D-Link Unified Switch by using
an L3 Tunnel for a network that needs L3 roaming capabilities.
This example contains information about the following features, which might be required to use L3 tunneling on your WLAN:
•

"Configuring the WLAN and Tunnel Interfaces"

• "Configuring the L3 Tunnel Network"
• "Configuring DHCP Relay and the DHCP Server"
C WLAN
ONFIGURING THE
The following figure shows an example of a network that uses L3 tunnels to support wireless roaming. The subnet that all
clients will use for L3 roaming is 192.168.60.0/24. The configuration examples in the rest of this appendix use the network
information in this figure.
192.168.2.20
Call Server
192.168.60.35
AP1
192.168.18.10
Wireless Client
192.168.60.55
The network in the example has the following characteristics:
• The VLAN Routing interface on each switch, call server, and roaming wireless client are all on the L3 tunnel subnet.
• Peer Unified Switches have logical interfaces on the same L3 tunnel subnet in order for clients to roam among APs
managed by all peer Unified Switches on the network.
• Peer Unified Switches are not on the same physical subnet.
• The APs are not in the same subnet as the switches or as the L3 tunnel subnet.
Document 34CS3000-SWUM104-D10
T
AND UNNEL
Figure 109: Example of a Network with L3 Tunnel Subnet
WS1 VLAN Routing Interface
192.168.60.15
WS1 WLAN (Loopback) Interface
192.168.100.15
WS1
WS1 Network
WS2 Network
Interface
Interface
192.168.7.20
L3 Network
I
NTERFACES
WS2 VLAN Routing Interface
WS2
AP2
192.168.28.10
Wireless Client
192.168.60.55
D-Link Unified Access System
192.168.60.25
WS2 WLAN (Loopback)
Interface
192.168.200.15
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