Cisco Mesh Access Points User Manual

When you enable this setting, the WGB scans for a new parent association when it encounters a poor
Received Signal Strength Indicator (RSSI), excessive radio interference, or a high frame-loss percentage.
Using these criteria, a WGB configured as a mobile station searches for a new parent association and
roams to a new parent before it loses its current association. When the mobile station setting is disabled
(the default setting), a WGB does not search for a new association until it loses its current association.
• Configuring a WGB for Limited Channel Scanning—In mobile environments such as railroads, a WGB
instead of scanning all the channels is restricted to scan only a set of limited channels to reduce the
hand-off delay when the WGB roams from one access point to another. By limiting the number of
channels, the WGB scans only those required channels; the mobile WGB achieves and maintains a
continuous wireless LAN connection with fast and smooth roaming. This limited channel set is configured
using the ap(config-if)#mobile station scan set of channels.
This command invokes scanning to all or specified channels. There is no limitation on the maximum
number of channels that can be configured. The maximum number of channels that can be configured
is restricted only by the number of channels that a radio can support. When executed, the WGB scans
only this limited channel set. This limited channel feature also affects the known channel list that the
WGB receives from the access point to which it is currently associated. Channels are added to the known
channel list only if they are also part of the limited channel set.
Configuration Example
The following example shows how to configure a roaming configuration:
ap(config)#interface dot11radio 1
ap(config-if)#ssid outside
ap(config-if)#packet retries 16
ap(config-if)#station role workgroup-bridge
ap(config-if)#mobile station
ap(config-if)#mobile station period 3 threshold 50
ap(config-if)#mobile station scan 5745 5765
Use the no mobile station scan command to restore scanning to all the channels.
Table 34: WGB Interoperability Chart, on page 169 identifies mesh access points and their respective frequency
bands that support WGB.
Table 34: WGB Interoperability Chart
WGBRAP/MAP
13101130/1240802.11n Indoor
APs
MAR3200Backhaul
2.4 GHz5 GHz2.4 GHz5 GHz2.4 GHz5 GHz2.4 GHz5 GHz4.9 GHz
(5, 10,
20
MHz)
YesNoYesYesYesYesYesYesNo1552/1552
YesNoYesYesYesYesYesYesNo1524SB/1524SB
Cisco Mesh Access Points, Design and Deployment Guide, Release 7.3
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Connecting the Cisco 1500 Series Mesh Access Points to the Network
WGB Roaming Guidelines

Cisco Mesh Access Points Specifications

General

Brand	Cisco
Model	Mesh Access Points
Category	Wireless Access Point
Language	English