SMC Networks ElliteConnect 2.4GHz/5GHz - Manual (Page 239)

Bridge Commands
7-69
Command Mode
Global Configuration
Command Usage
This command sets the time interval (in seconds) at which the
root device transmits a configuration message.
Example
bridge stp-bridge max-age
Use this command to configure the spanning tree bridge
maximum age globally for the wireless bridge. Use the no form to
restore the default.
Syntax
bridge stp-bridge max-age seconds
no bridge stp-bridge max-age
seconds - Time in seconds. (Range: 6-40 seconds)
The minimum value is the higher of 6 or [2 x (hello-time + 1)].
The maximum value is the lower of 40 or [2 x (forward-time - 1)].
Default Setting
20 seconds
Command Mode
Global Configuration
AP(config)#bridge stp-bridge hello-time 5
AP(config)#