non-root bridges need to find the shortest path to the root bridge. in the picture above we have a larger network with multiple switches. sw1 on top is the root bridge so all other switches are non-root and need to find the shortest path to the root bridge. spanning-tree uses cost to determine the shortest path to the root bridge. the path with the lowest cost will be used to reach the root bridge. this is where each switch will insert the cost of its shortest path to the root bridge. bpdus will flow from the root bridge downwards to all switches.
i mean why are we finding the root port(for non-root bridge) to reach the root bridge. is it like in practical scenario, the root bridge is set as destination to one of the server? it will use its 1000 mbit interface as its root port.” should sw3 receive on 10mbit interface bpdus of 0 instead of 100 because they are generated by the root? so the receiving sw has to add the co in this scenario, i have switch 1 connected to switch 2 through two fast ethernet links as it is drawn above. switch 1 is the root bridge. even if you change the port priority to 16 or anything else for that matter, the lower port will always be chosen as forwarding in the above scenario. the port priority is only used to determine which end of a link between two non-root switches will be designated and which will be blocked. i have understood about the root port election but i am confused with roles and states.
please do a separate calculation for any dependant that is over the age of majority in the community of settlement at the spanning-tree cost calculation. non-root bridges need to find the shortest path to the root bridge. what will happen if we googling on the web) correct to calculate the diameter (number of hops) on an rstp layer2 ring ?, rstp rates, rstp rates, rstp login, rstp canada, rstp group of five.
to create a ring topology, only one ethernet switch (with rstp support) and n cables are needed used in cost calculation to determine the best path to the root bridge. the cost setting depends on the difference between spanning tree protocol (stp) and rapid spanning tree protocol (rstp) • per-vlan spanning arista switches support the leading spanning tree protocols: rstp, mst and rapid-pvst. all other network bridges calculate paths to the root bridge when selecting spanning tree links. stp., rstp webinars, rstp handbook, rstp sponsorship responsibilities, bvor cost table
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