Why is the channel switching sometimes slow during STA roaming? How can I improve the roaming sensitivity of a wireless NIC

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The roaming process takes a long time due to the following reasons:
- Users use different security policies. The roaming time of a STA using the WEP security policy is smaller than that of the STA using the WPA security policy.
- Users switch between different channels during roaming. The roaming time of a STA that switches from channel 1 to channel 6 is smaller than that of the STA that switches from channel 11 to channel 6.
- STA NICs differ. The roaming time is determined by the NIC performance.
To configure the roaming sensitivity of a wireless NIC (for example, on a PC running Windows XP), choose Start > Settings > Network Connections. Right-click the wireless NIC, choose Properties, and click the Advanced tab. Adjust Roaming Initiative. If the roaming initiative is adjusted to the lowest level, the roaming sensitivity decreases to the lowest level. If the roaming initiative is adjusted to the highest level, the roaming sensitivity increases to the highest level.

Other related questions:
How do I adjust sensitivity of a wireless NIC
To adjust sensitivity of the wireless network adapter, perform the following operations (Windows XP as an example): Choose Start -> Settings -> Network Connections. Right-click the wireless NIC and choose Advanced in Property. Adjust Roaming Aggressiveness. A lower roaming aggressiveness indicates a lower roaming sensitivity level.

If the STA roaming speed is slow, how can I handle it
The causes and solutions for slow STA roaming speeds are as follows: 1. The roaming sensitivity of STAs is not properly configured on the AC. Adjust the roaming sensitivity of STAs. 2. The network is not properly planned. Optimize the network plan. 3. AP signal interference exists. Scan AP channels to eliminate interference. 4. Users use different security policies. The roaming time of a STA using WEP is smaller than that of a STA using WPA. Select proper security policies based on actual requirements. 5. STAs switch between different channels during roaming. The roaming time of a STA that switches from channel 1 to channel 6 is smaller than that of the STA that switches from channel 11 to channel 6. Slow handover may cause packet loss during roaming. It is normal if only 1 to 2 packets are lost in this process.

When a STA is roaming, whether the STA subnet attributes are changed
During STA roaming, STA subnet attributes such as the IP address, VLAN, ACL, and priority are inherited and will not be changed.

Does a STA need to be reauthenticated or re-logged in during STA roaming? Do the STA's subnet properties (including the IP address, home VLAN, ACL, and priority) change
During STA roaming, the STA does not need to be reauthenticated or re-logged in. In addition, the STA's subnet properties are inherited, so they do not change.

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