Cisco Systems OL-7426-03 Manual De Usuario

Cisco WLAN Solution Mobility Group

Cisco WLAN Solution operators can define Mobility Groups to allow client roaming across groups of 
Cisco Wireless LAN Controllers. Because the Cisco Wireless LAN Controllers in 

 can detect each other across the network and over the air, it is important 

that each enterprise, institution, and wireless internet service provider isolate their Cisco Wireless LAN 
Controllers. The Operating System makes it easy for operators to create this isolation by allowing them 
to assign a Mobility Group Name to their Cisco Wireless LAN Controllers. This assignment can be made 
using the 

, or the 

. 

Before clients can roam, they are automatically associated with their original, or anchor, Cisco Wireless 
LAN Controller. This anchor Cisco Wireless LAN Controller maintains the client information and ensures 
that the client remains connected with the same IP address across all handoffs for the duration of the 
client session.
Note that all the Cisco Wireless LAN Controllers in a Mobility Group must use the same LWAPP 

, or you will defeat the Mobility software algorithm.

The following figure shows the results of creating Mobility Group Names for two groups of Cisco 
Wireless LAN Controllers. The Cisco Wireless LAN Controllers in the ABC Mobility Group recognize and 
communicate with each other through their 

 and through 

their shared subnets, but the ABC Mobility Group tags the XYZ Cisco 1000 Series lightweight access 
points as 

. Likewise, the Cisco Wireless LAN Controllers in the XYZ Mobility Group 

do not recognize or communicate with the Cisco Wireless LAN Controllers in the ABC Mobility Group. 
This feature ensures Mobility Group isolation across the network.

Typical Cisco WLAN Solution Mobility Group Name Application