System information

3. Scenario 3 – L3 Overlay: 1 Unified Switch + 1 AP + 1 Remote

The diagram in this section shows a network configuration with a D-LINK Unified Switch

connected to an L3 Device/Router. One AP is connected to the D-LINK Unified Switch, and the

other is connected to the L3 device. Both APs are managed by the D-LINK Unified Switch.

This scenario uses L3 tunneling so that a client that associated with AP1 initiates an audio

conversation and roams to a different subnet. In the process, the client is disassociated with AP1

and gets associated with AP2 maintaining the audio conversation.

This scenario is especially useful for you to setup a demo in customers’ existing network with

little change to customers’ network configuration.

The objectives for this scenario include the following:

• To know how to setup the L3 tunneling (L3 Tunneling must be used since the APs are on

different IP subnets and there is not a L2 path between the APs for the WLAN Network

data).

• To know how to manage the remote AP and the most practical deployment into

customers’ existing networks.

In this scenario, the L3 device is part of the customer network. The L3 device must meet the

following minimum requirements:

• One network to connect to the Unified Switch (in this scenario, the network is

172.17.5.0/24)

• One network to connect to AP2 (in this scenario, the network is 172.17.6.0/24)

• DHCP server in the AP2 network for AP and wireless client addresses

Unified Switch1

AP1

Network IP: 10.90.90.90

Loopback: 192.168.10.254

L3 Tunnel: 192.168.250.254

CL1

FTP Server

Audio/Video Server

192.168.20.x

192.168.250.x

SSID:

L3-Tunnel: 192.168.250.x

AP2

L3 Device

Across L3 Network

172.17.5.0/24

172.17.6.0/24

Seamless Roaming

172.17.6.x