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The IEEE 802.1D Spanning Tree Protocol resolves the problems of physical
loops in a network by establishing one primary path between any two switches
in a network. Any duplicate paths are barred from use and become standby or
blocked paths until the original path fails, at which point they can be brought
into service.
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The switch meets the requirements of the Spanning Tree Protocol (STP) by
performing the following functions:
■
Creates a single spanning tree from any arrangement of switching or
bridging elements.
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■
Compensates automatically for the failure, removal, or addition of any
device in an active data path.
■
Achieves port changes in short time intervals, which establishes a stable
active topology quickly with a minimum of network disturbance.
■
Uses a minimum amount of communications bandwidth to accomplish
the operation of the Spanning Tree Protocol.
■
Reconfigures the active topology in a manner that is transparent to
stations transmitting and receiving data packets.
■
Manages the topology in a consistent and reproducible manner through
the use of Spanning Tree Protocol parameters.