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Chapter 4: Web-Based Management
72 GE-DS-242-PoE Managed Ethernet Switch User Manual
Figure 4-33: STP Port State Transitions
You can modify each port state by using management software. When you enable
STP, every port on every switch in the network goes through the blocking state and
then transitions through the states of listening and learning at power up. If properly
configured, each port stabilizes to the forwarding or blocking state. No packets
(except BPDUs) are forwarded from, or received by, STP enabled ports until the
forwarding state is enabled for that port.
STP Parameters
STP Operation Levels
The Switch allows for two levels of operation: the switch level and the port level. The
switch level forms a spanning tree consisting of links between one or more switches.
The port level constructs a spanning tree consisting of groups of one or more ports.
The STP operates in much the same way for both levels.