TRENDnet TEG-S4000I - Manual (Page 42)

Figure 5-8-1 The STP upper page
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.
MAC Address: the MAC address of the root switch
Root Max Age: the amount of time (in seconds) protocol information
received on a port is stored by the root switch
Root Hello Time: how often the root switch broadcasts Hello
message to other switches
Root Forward Delay: the amount of time a port will remain in the
listening and learning states before entering the forwarding state
Root Path Cost: the path cost to the root switch from this switch
Root 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.
Priority: the priority of this switch, default is 32768. The smaller this
value, the higher priority this switch has.
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