User manual
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network loops that could cause a broadcast storm. When physical 
links forming a loop provide redundancy, only a single path will be 
forwarding frames. If the link fails, STP activates a redundant link 
automatically. 
Figure 356 – Configuration > Spanning Tree 
By default, Spanning Tree is Disabled. If Enabled, the Switch will 
listen for BPDU packets and its accompanying Hello packet. BPDU 
packets are sent even if a BPDU packet was not received. Therefore, 
each link between bridges is sensitive to the status of the link. 
Ultimately this difference results in faster detection of failed links, and 
thus faster topology adjustment. A draw-back of 802.1D is this 
absence of immediate feedback from adjacent bridges. 
After  Enabling STP, setting the STP Global Setting includes the 
following options: 










