Cisco Cisco Aironet 350 Mini-PCI Wireless LAN Client Adapter Guia Do Desenho
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Enterprise Mobility 4.1 Design Guide
OL-14435-01
Chapter 2 Cisco Unified Wireless Technology and Architecture
Mobility Groups, AP Groups, and RF Groups
Figure 2-7
AP Groups and Site-Specific VLANS
In
, there are three dynamic interfaces configured, each mapping to a site-specific VLAN:
VLAN 61, 62, and 63. Each site specific VLAN and associated APs are mapped to the same WLAN
SSID using the AP grouping feature. A corporate user associating to the WLAN on an AP in the AP
Group corresponding to VLAN 61 gets an IP address on the VLAN 61 IP subnet. Likewise, a corporate
user associating to the WLAN on an AP in the AP Group corresponding to VLAN 62 gets an IP address
on the VLAN 62 IP subnet and so on. Roaming between the site-specific VLANs is handled internally
by the WLC as a Layer 3 roaming event and as such, the wireless LAN client maintains its original IP
address.
SSID using the AP grouping feature. A corporate user associating to the WLAN on an AP in the AP
Group corresponding to VLAN 61 gets an IP address on the VLAN 61 IP subnet. Likewise, a corporate
user associating to the WLAN on an AP in the AP Group corresponding to VLAN 62 gets an IP address
on the VLAN 62 IP subnet and so on. Roaming between the site-specific VLANs is handled internally
by the WLC as a Layer 3 roaming event and as such, the wireless LAN client maintains its original IP
address.
RF Groups
RF groups, also known as RF domains, represent another important deployment consideration. An RF
group is a cluster of WLCs that collectively coordinate and calculate their dynamic radio resource
management (RRM) settings based on 802.11 PHY type (for example, 802.11b/g and 802.11a).
group is a cluster of WLCs that collectively coordinate and calculate their dynamic radio resource
management (RRM) settings based on 802.11 PHY type (for example, 802.11b/g and 802.11a).
An RF group exists for each 802.11 PHY type. Grouping WLCs into RF domains allows the solution’s
dynamic RRM algorithms to scale beyond a single WLC, thereby allowing RRM for a given RF domain
to extend between floors, buildings, and even across campuses. RF Groups and RRM is discussed in
more detail in a later chapter of this document, but can be summarized as follows:
dynamic RRM algorithms to scale beyond a single WLC, thereby allowing RRM for a given RF domain
to extend between floors, buildings, and even across campuses. RF Groups and RRM is discussed in
more detail in a later chapter of this document, but can be summarized as follows:
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LWAPP
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Single SSID secure
Spanning Campus
AP Group:
VLAN 61
AP Group:
VLAN 63
AP Group:
VLAN 62
VLAN 61
VLAN 63
VLAN 62