어떤 상황에서 루트 포트가 선택되어 있습니다, 포트 ID는 포트를 지정할 때 비교됩니다.?

When selecting the root port, when the port-to-root bridge overhead value and the peer bridge ID are all the same, the peer port ID size needs to be compared, and the small one is preferred; 2. When selecting the specified port, when the port-to-root bridge overhead value and the local bridge ID are all the same, the local port ID size needs to be compared, and the small one is preferred.