spanning-tree protocol meaning in English

生成树协议

The spanning - tree protocol establishes a root node called the root bridge
扩充树协定建立一个根节点叫根桥接器。
Each port on a switch that uses the spanning - tree protocol has one of five states , as shown in figure
使用扩充树协定的交换器，每个埠有五种状态，如图所示。
The spanning - tree protocol constructs a topology that has one path for every node on the network
扩充树协定建立了一个网路拓扑，其中每一个节点都存在一条路径。
The spanning - tree protocol requires network devices to exchange messages to detect bridging loops . links that will cause a loop are put into a blocking state
扩充树协定需要网路装置互相交换讯息来侦测桥接的?圈。会引起?圈的连结将被归类为阻断状况。