Cisco Cisco Access Registrar 4.2 Especificações descarregar pdf (Página 138)

100

101

4-40

Cisco Wireless LAN Controller Configuration Guide

OL-13826-01

Chapter 4 Configuring Controller SettingsWireless Device Access

Configuring Client Roaming

Step 5 In the Scan Threshold field, enter the minimum RSSI that is allowed before the client should roam to a

better access point. When the RSSI drops below the specified value, the client must be able to roam to a

better access point within the specified transition time. This parameter also provides a power-save

method to minimize the time that the client spends in active or passive scanning. For example, the client

can scan slowly when the RSSI is above the threshold and scan more rapidly when below the threshold.

Range: –70 to –77 dBm

Default: –72 dBm

Step 6 In the Transition Time field, enter the maximum time allowed for the client to detect a suitable

neighboring access point to roam to and to complete the roam, whenever the RSSI from the client’s

associated access point is below the scan threshold.

The Scan Threshold and Transition Time parameters guarantee a minimum level of client roaming

performance. Together with the highest expected client speed and roaming hysteresis, these parameters

make it possible to design a wireless LAN network that supports roaming simply by ensuring a certain

minimum overlap distance between access points.

Range: 1 to 10 seconds

Default: 5 seconds

Note For high-speed client roaming applications in outdoor mesh environments, Cisco recommends

that you set the Transition Time parameter to 1 second.

Step 7 Click Apply to commit your changes.

Step 8 Click Save Configuration to save your changes.

Step 9 Repeat this procedure if you want to configure client roaming for another radio band (802.11a or

802.11b/g).

Using the CLI to Configure CCX Client Roaming Parameters

To configure CCX Layer 2 client roaming parameters, enter this command:

config {802.11a | 802.11/jointfilesconvert/511341/bg} l2roam rf-params min-rssi rssi_value roam-hyst hyst_value scan-thres

thres_value trans-time time_value

Note See the description, range, and default value of each RF parameter in the “Using the GUI to

Configure CCX Client Roaming Parameters” section on page 4-39.

Using the CLI to Obtain CCX Client Roaming Information

Use these commands to view information about CCX Layer 2 client roaming.

1. To view the current RF parameters configured for client roaming for the 802.11a or 802.11b/g

network, enter this command:

show {802.11a | 802.11b} l2roam rf-params

2. To view the CCX Layer 2 client roaming statistics for a particular access point, enter this command:

show {802.11a | 802.11b} l2roam statistics ap_mac

1 2 ... 133 134 135 136 137 138 139 140 141 142 143 ... 635 636

Comentários a estes Manuais

Sem comentários

Cisco Cisco Access Registrar 4.2 Especificações Página 138

Comentários a estes Manuais