SMC Networks SMC6752AL2 Manual De Usuario

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Root Forward Delay – The maximum time (in seconds) this device 
will wait before changing states (i.e., discarding to learning to 
forwarding). This delay is required because every device must receive 
information about topology changes before it starts to forward frames. 
In addition, each port needs time to listen for conflicting information 
that would make it return to a discarding state; otherwise, temporary 
data loops might result.
Transmission limit – The minimum interval between the 
transmission of consecutive RSTP BPDUs.
Path Cost Method – The path cost is used to determine the best path 
between devices. The path cost method is used to determine the range 
of values that can be assigned to each interface.
Web – Click Spanning Tree, STA, Information.
Figure 3-56  STA Information