[Switch] How to disable bridge to become hub

When ageing time set to 0.
That mean this switch become hub.

Description :
The aging time is the number of seconds a MAC address will be kept in the forwarding database after having received a packet from this MAC address.

 brctl setageing bridgename time
 

The another action will need to set register of switch chip.
This action need to refer to spec.

Reference:

• bridge