What Is Bpdu Guard Cisco?
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BPDU Guard is a feature of Cisco switches that is used to prevent a malicious user from creating a loop in the network by connecting a switch to an existing port that is configured as a Spanning Tree port. When BPDU Guard is enabled on a port, the port is automatically shut down if it receives a BPDU (Bridge Protocol Data Unit). This helps to prevent malicious users from creating loops in the network.