| 摘要 |
<p>A method and apparatus for providing spanning tree support are provided. A network device includes two or more ports that are part of a trunk. One of the two or more ports is selected for participation in a loop-free topology discovery protocol (520). Then, the loop-free topology discovery protocol is executed for the selected port (540). If the loop-free topology discovery protocol indicates the selected port is to be blocked (550), then all the ports of the trunk are to be blocked (560). Also, a set of states for association with each port of a network device is provided. The set of states includes a "blocked" state in which both learning and forwarding remains inhibited, and in a "non-blocked" state in which both learning and forwarding are permitted.</p> |
