Contents

Configuring WLAN optimization· 1

About WLAN optimization· 1

Restrictions and guidelines: WLAN optimization configuration· 1

Configuring rejection of weak-signal clients· 1

Configuring AP-triggered client reassociation· 2

Configuring hidden node protection· 2

Configuring channel reuse· 2

Configuring software retransmission· 3

Configuring WLAN optimization

About WLAN optimization

Proper channel planning and power control policies during WLAN deployment are important for good performance. However, in live WLAN networks, channel overlapping, collisions, and interference can easily occur because the none-overlapping channels are limited but the number of WLAN devices always increases.

The WLAN optimization features can help you improve the quality and stability of a WLAN.

Restrictions and guidelines: WLAN optimization configuration

Use WLAN optimization commands under the guidance of H3C Support.

There is no fixed combination of features for optimizing a specific WLAN. Select and adjust the features based on the application effect and WLAN performance.

The overall performance of a WLAN is determined by the network architecture as well as channel and power planning. Therefore, the WLAN optimization features cannot significantly increase the performance of a WLAN. In practice, if the features can improve the WLAN performance by 3%, the optimization is considered successful.

Configuring rejection of weak-signal clients

About this task

This feature enables an AP to reject clients with an RSSI lower than the specified threshold to release channel resources and enhance WLAN performance.

Restrictions and guidelines

After you enable this feature, wireless clients with an RSSI lower than the threshold might fail to access the WLAN.

After a client accesses the WLAN, an AP will not log off the client with an RSSI lower than the threshold but will reject the client after it disconnects from the network.

To avoid client access failures, set an appropriate RSSI value when enabling this feature.

Procedure‌

1.     Enter system view.

system-view

2.     Enter WLAN radio interface view.

interface wlan-radio interface-number

3.     Configure rejection of weak-signal clients.

option client reject enable [ rssi rssi-value ]

By default, rejecting weak-signal clients is disabled.

Configuring AP-triggered client reassociation

About this task

A client with a low signal strength can roam to another AP only when its signal strength is lower than the manufacturer-defined signal strength for triggering roaming. Therefore, the client cannot obtain good network experience and service quality.

This feature enables an AP to send unsolicited deauthentication frames to a client when the signal strength of the client is lower than the specified RSSI threshold. Then, the client can reassociate with the AP or roam to another AP.

Restrictions and guidelines

To avoid unexpected client logoff, set an appropriate RSSI value when enabling this feature.

Procedure‌

1.     Enter system view.

system-view

2.     Enter WLAN radio interface view.

interface wlan-radio interface-number

3.     Configure AP-triggered client reassociation.

option client reconnect enable [ rssi rssi-value ] [ interval interval ]

By default, AP-triggered client reassociation is disabled.

Configuring hidden node protection

About this task

This feature enables clients to send RTS or CTS frames before transmitting frames to avoid interference from hidden nodes.

Restrictions and guidelines

This feature takes effect only on 802.11g, 802.11n, 802.11ac, and 802.11ax clients.

Procedure‌

1.     Enter system view.

system-view

2.     Enter WLAN radio interface view.

interface wlan-radio interface-number

3.     Configure hidden node protection.

option client hide-node-protection enable

By default, hidden node protection is disabled.

Configuring channel reuse

About this task

This feature enables the AP to ignore packets with a signal strength lower than the specified channel reuse level. This mechanism enables the AP to obtain more radio resources and improves the performance of APs working on the same channel.

Restrictions and guidelines

Enabling this feature might add hidden nodes.

Procedure

1.     Enter system view.

system-view

2.     Enter WLAN radio interface view.

interface wlan-radio interface-number

3.     Configure channel reuse.

option channel-reuse-optimization { disable | enable level level }

By default, channel reuse is disabled.