Cisco 2100 Series Configuration Manual page 353

Chapter 6 Configuring WLANsWireless Device Access
Configuring WLANs
Figure 6-18 Access Point Groups
In Figure 6-18, three configured dynamic interfaces are mapped to three different VLANs (VLAN 61,
VLAN 62, and VLAN 63). Three access point groups are defined, and each is a member of a different
VLAN, but all are members of the same SSID. A client within the wireless SSID is assigned an IP
address from the VLAN subnet on which its access point is a member. For example, any user that
associates with an access point that is a member of access point group VLAN 61 is assigned an IP
address from that subnet.
In the example in Figure 6-18, the controller internally treats roaming between access points as a Layer
3 roaming event. In this way, WLAN clients maintain their original IP addresses.
Cisco Wireless LAN Controller Configuration Guide
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