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{{IPstack}}
{{commons category|Multiple Spanning Tree Protocol}}
The '''Multiple Spanning Tree Protocol''' ('''MSTP''') and [[algorithm]], provides both simple and full connectivity assigned to any given [[Virtual LAN]] (VLAN) throughout a Bridged Local Area Network. MSTP uses [[Bridge Protocol Data Unit|BPDUs]] to exchange information between spanning-tree compatible devices, to prevent loops in each [[Multiple Spanning Tree Protocol#Multiple Spanning Tree Instances (MSTI)|MSTI]] (Multiple Spanning Tree Instances) and in the [[Multiple Spanning Tree Protocol#Common and Internal Spanning Tree(CST/CIST)|CIST]] (Common and Internal Spanning Tree), by selecting active and blocked paths. This is done as well as in [[Spanning Tree Protocol|STP]] without the need of manually enabling backup links and getting rid of [[
Moreover, MSTP allows frames/packets assigned to different VLANs to follow separate paths, each based on an independent MSTI, within MST Regions composed of [[Local area network| LANs]] and or MST Bridges. These Regions and the other Bridges and LANs are connected into a single Common Spanning Tree (CST).
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