What is the role of BPDU in MSTP?

The role of BPDUs (Bridge Protocol Data Units) in Multiple Spanning Tree Protocol (MSTP) is crucial for maintaining the network topology and ensuring loop-free operations. BPDUs are used by switches to communicate with each other about the structure of the network. In the context of MSTP, they help in managing the spanning tree instances, ensuring that traffic is efficiently routed and preventing loops.

When an MSTP-enabled port sends out BPDUs, it is transmitting information about its own status and the status of its connected networks. This includes details about the VLANs associated with the switch and the different instances of spanning trees that are operational. By sharing this information via BPDUs, switches can make informed decisions about how to forward traffic and which paths should be considered active or blocked.

This makes the statement highlighting the role of sending protocol packets from MSTP-enabled ports accurate. The effective transmission of BPDUs allows switches to participate in the MSTP operation, leading to optimal network performance and stability.