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Refer to the exhibit. There are two fast Ethernet links between switches SW1 and SW2 used for redundancy. Which Port ID from which switch will likely be in discarding state after the Spanning Tree process is finished?
Port f1/0 on switch SW1.
Port f1/3 on switch SW2.
Port f1/3 on switch SW1.
Port f1/0 on switch SW2.
Since switch SW1 has lower Bridge ID (same priority but lower MAC Address), it becomes the Root Bridge. To find the root ports on the non-root bridge, it is necessary to compare the accumulated path cost to the root bridge, since the path is the same (only one non-root bridge), the root bridge becomes obvious (either f1/0 or f1/3). The Since the Bridge ID is the same within the SW2, the root bridge becomes the lowest port ID, in this case _f1/0, making f1/3 the discarding port.
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