If you want to participate in spanning tree, have the "Enable Spanning Tree Protocol" checkbox selected.
The Current Spanning Tree Root describes the unique root switch information for the instance of spanning tree.
ØMAC Address: the MAC address of the root switch
ØRoot Priority: The priority of the root switch
ØRoot Max age (sec): the amount of time (in seconds) protocol information received on a port is stored by the root switch
ØRoot Hello Time: how often the root switch broadcasts Hello message to other switches
ØRoot Forward Delay: the amount of time a port will remain in the listening and learning states before entering the forwarding state
ØRoot Path Cost: the path cost to the root switch from this switch
ØRoot Port: the port providing the best path from the switch to the root switch
The Spanning Tree Bridge Configuration describes this switch information in the spanning tree Note: Priority, Max Age Time, Hello Time and Forward Delay are unchangeable on this device.
4.9 Port Security
This function allows you to restrict specific MAC addresses to reside in some port. For example, a dummy hub is attached to some port for extension, and you just only allow 2 users to access this port at the same time, you can use the port security window to set the parameters.
To restrict the number of MAC address to reside in a port, you must do the following
ØClick the “ Enable “ checkbox for that port. IF the “ Enable “checkbox is uncheck,
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