About Client Roaming
The Cisco WLAN Solution supports seamless client roaming across Cisco 1000 Series lightweight access points managed by the same Cisco Wireless LAN Controller, between Cisco Wireless LAN Controllers in the same Cisco WLAN Solution Mobility Group on the same subnet, and across Cisco Wireless LAN Controllers in the same Mobility Group on different subnets. The following chapters describe the three modes of roaming supported by the Cisco WLAN Solution.
Same-Cisco Wireless LAN Controller (Layer 2) Roaming
Each Cisco Wireless LAN Controller supports
Inter-Cisco Wireless LAN Controller (Layer 2) Roaming
Similarly, in
Note that the Cisco 1030 remote edge lightweight access points at a remote location must be on the same subnet to support roaming.
Inter-Subnet (Layer 3) Roaming
Similarly, in
Note that the Cisco 1030 remote edge lightweight access points at a remote location must be on the same subnet to support roaming.
Special Case: Voice Over IP Telephone Roaming
802.11VoIP telephones actively seek out associations with the strongest RF signal to ensure best Quality of Service (QoS) and maximum throughput. The minimum VoIP telephone requirement of 20 millisecond or shorter latency time for the roaming handover is easily met by the Cisco WLAN Solution, which has an average handover latency of nine or fewer milliseconds.
This short latency period is controlled by Cisco Wireless LAN Controllers, rather than allowing indepen- dent access points to negotiate roaming handovers.
The Cisco WLAN Solution supports 802.11 VoIP telephone roaming across Cisco 1000 Series lightweight access points managed by Cisco Wireless LAN Controllers on different subnets, as long as the Cisco Wireless LAN Controllers are in the same mobility group. This roaming is transparent to the VoIP tele- phone, because the session is sustained and a tunnel between Cisco Wireless LAN Controllers allows the
5/26/05 | Client Roaming |
|
|
