What Is Bpdu Filter?
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BPdu filter is a Cisco feature that can be used to restrict the spread of Bridge Protocol Data Units (BPDUs) on a network. BPDUs are the packets used by switches to communicate with each other and form a loop-free topology. By enabling BPDU filter on a port, the switch will not forward any BPDU packets received on that port, thus preventing them from propagating on the network.