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

1. When selecting the root port, when the port-to-root bridge overhead value and the peer bridge ID are all the same, you need to compare the peer port ID size, and the small one is preferred. 2. When selecting the designated port, when the port-to-root bridge overhead value and the local bridge ID are all the same, you need to compare the local port ID size, and the small one is preferred.