With Per VLAN Spanning Tree (PVST) we configure a specific switch to become the root bridge for each VLAN. You can do this with the spanning-tree vlan X root primary command which sets the priority automatically, or you can set the priority manually with the spanning-tree. In this sample chapter from CCNP and CCIE Enterprise Core ENCOR 350-401 Official Cert Guide, you will review techniques for configuring a switch to be guaranteed as the root bridge or as a backup root bridge for a Layer 2 topology. A properly designed network strategically places the root bridge on. Spanning Tree Protocol (STP) is a Layer 2 protocol that decides the best path for LAN traffic when multiple options exist, preventing network loops while guaranteeing redundancy in case of link failure. How does it do this? STP communicates using Bridge Protocol Data Units (BPDU). So today, let me simplify. Network loops occur when there are multiple paths between two points in a network, leading to data continuously circulating and potentially causing significant issues such as performance degradation, unexpected port blockages, complete network outages, and device crashes.
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