BPDU messages are used to communicate which kind of information in STP?

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Multiple Choice

BPDU messages are used to communicate which kind of information in STP?

BPDU messages in STP carry information about the spanning-tree topology, enabling switches to converge on a loop-free path to the root bridge. They share the root bridge identity, the cost to reach the root, and the sender’s bridge and port identifiers, which allows each switch to determine which port should be the root port and which ports on each segment should be designated. This topology data lets the network pick the best paths and block redundant ones to prevent loops, updating as changes occur. These BPDUs aren’t used for IP routing information—that’s handled by routing protocols like OSPF or BGP. They also aren’t for carrying VLAN IDs, which are managed by VLAN tagging, nor for MAC address mappings, which are learned and stored in the switch’s MAC address table.

BPDU messages in STP carry information about the spanning-tree topology, enabling switches to converge on a loop-free path to the root bridge. They share the root bridge identity, the cost to reach the root, and the sender’s bridge and port identifiers, which allows each switch to determine which port should be the root port and which ports on each segment should be designated. This topology data lets the network pick the best paths and block redundant ones to prevent loops, updating as changes occur.

These BPDUs aren’t used for IP routing information—that’s handled by routing protocols like OSPF or BGP. They also aren’t for carrying VLAN IDs, which are managed by VLAN tagging, nor for MAC address mappings, which are learned and stored in the switch’s MAC address table.

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