In the STP root bridge election process, all of the switches advertise themselves as the root bridge until they receive a superior BPDU. Every source about STP says that after initialisation all of the ports start in the Blocking state. If the ports are in blocking state, which means they cant forward any frames, how can the switches forward their bridge id in order for the root bridge election process to happen?
i know that one reason for /root not being in /home is that usually /home is mounted on a different disk and if it were to fail, we still want root to be accessible. What are some of the other reasons for this structure?