Spanning Tree Protocol (STP) is defined in the IEEE 802.1D standard. The primary purpose of STP is to attempt to provide a loop-free topology in a redundant Layer 2 network environment. The word ‘attempt' is used because implementing STP does not always guarantee a loop-free switched network. This is because STP operates by making the following assumptions about the network:
- All links are bidirectional and can both send and receive BPDUs
- The switch is able to regularly receive, process, and send BPDUs
NOTE: BPDU is the acronym . . .
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