Some APs registered in the central AC instead of the local AC in the hierarchical AC network of a site

Normal

Some APs cannot be registered to the local AC, but they are all normal on the centerAC. You can check through the command dis wlan ap all that all APs are online normally. Through the command display wlan ap-distribution all, it is true that some APs are not registered on the local AC, but are all registered on the centerAC. The wireless use is normal, and the terminal can also connect to the few APs that are not online on the local AC. Feedback restarting the AC improves, but after a while it reappears.

Judging from the collected information, some APs are indeed only online in the Central. The local AC corresponding to these APs has an online AP and the registration status of the local and central is also normal.

It is suspected that the link between the AP and the local was timed out due to a link problem during operation, or the link timed out when the AP information was synchronized between the local and the Central, which caused the AP to switch from the local offline to the Central online.

Under the current configuration, if the AP switches from local offline to central, if the AP is not manually triggered to go online again, the AP will not automatically switch back to the local online. If you want to achieve automatic switching, you can set the AP group on the Central AC Configure the following commands:

1.1.23 switchback (Central AC)

The switchback enable command is used to enable the automatic switchback function.

Use the switchback disable command to disable the automatic switchback function.

Use the undo switchback command to restore the default.

Command:

Default:

l  AP view: inherits the AP group configuration.

l  AP group view: The automatic switchback function is disabled.

View:

AP view

AP group view

Default User Role:

network-admin

User guides:

Only the Central AC supports this function.

In a hierarchical network, when the Local AC fails to provide services, its online APs will automatically go online to the Central AC, and the Central AC will continue to provide services. However, when the Local AC recovers, the AP is still on the Central AC, which brings a huge load to the Central AC and affects the processing of transactions on the Central AC. If the AP is manually switched back to the Local AC, the processing work is huge and it is easy to affect the operation of the live network environment.

After enabling this function on the Central AC, when it detects that the Local AC has recovered and can continue to provide services, the APs migrated to the Central AC will automatically switch back to the original Local AC within a short period of time, reducing the cost of the Central AC. Load issues, and will not affect the operation of the live network environment.

Example:

# Enable the automatic switchback function. (AP view)

Configure switchback enable in AP or AP group view