How to configure spanning tree9/1/2023 ![]() ![]() All RP/DPs will be in FORWARDING state & all other ports will be in BLOCKING state.Īccording to the topology CAT1 is having lowest MAC address (hence lowest bridge ID) & will become the Root Bridge. Each segment should have one Designated Port (DP)ĥ. All ports in Root Bridge become Designated Ports (DP)Ĥ. Each non-root bridge should have ONE root port (RP) which is the port having lowest path-cost to Root Bridge.ģ. Lowest bridge ID (Priority:MAC Address) switch becomes the Root-BridgeĢ. ![]() Since we are taking vlan10 as example default bridge priority will be 32778.ġ. Any given switch Bridge ID consist of Bridge Priority (default 32768 + system extend ID) & MAC address. We will use the VLAN 10 (management vlan) STP instance to see which ports will be Root Port in each switch. In this post we will see how to manipulate STP root port selection in a given topology. ![]()
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