214 © 2001- 2008 D-Link Corporation. All Rights Reserved.
D-Link Unified Access System User Manual
Configuring the WLAN and Tunnel Interfaces
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.
Figure 101. Example of a Network with L3 Tunnel Subnet
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.
•
The call server is physically connected to a Unified Switch, and the port the call server
uses is assigned to the VLAN ID of the VLAN Routing interface of the tunneled subnet.
•
Each switch uses a loopback interface for the WLAN functions, and the loopback
interface is on a different network than the L3 tunnel subnet.
•
Routing is enabled on each switch.
•
Network devices have routes to the loopback and L3 tunnel subnets, and a host can ping
the loopback interface and L3 tunnel interface on each switch.
•
DHCP relay is enabled on each switch so that a DHCP server on the network can assign IP
addresses to the wireless clients.
•
The wireless client receives an IP address in the L3 tunnel subnet and keeps that IP
address throughout the roaming session.
CAUTION:
APs, peer Unified Switches, and other routers must not be connected to
the tunneled routing interface.
Call Server
192.168.60.35
WS1 VLAN Routing Interface
192.168.60.15
WS2 VLAN Routing Interface
192.168.60.25
L3 Network
AP1
192.168.18.10
AP2
192.168.28.10
Wireless Client
192.168.60.55
Wireless Client
192.168.60.55
WS1 WLAN (Loopback) Interface
192.168.100.15
WS2 WLAN (Loopback)
192.168.200.15
WS1 Network
192.168.2.20
Interface
WS2 Network
192.168.7.20
WS1
WS2
Interface
Interface
Содержание DWS-3024L
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