如何开启stp

1. 进入全局配置模式：

```

Router> enable

Router configure terminal

```

2. 选择VLAN：

如果你的网络中有多个VLAN，你需要为每个VLAN分别配置STP。以下是配置VLAN 1的示例：

```

Router(config) vlan 1

Router(config-vlan) exit

```

```

Router(config) spanning-tree mode stp

```

4. 设置根桥接优先级（可选）：

如果需要手动指定根桥接优先级，可以使用以下命令：

```

Router(config) spanning-tree vlan 1 root primary

Router(config) spanning-tree vlan 1 root primary priority 4096

```

其中，4096是优先级的值，范围是0到65535。

5. 配置端口优先级（可选）：

如果需要手动指定端口优先级，可以使用以下命令：

```

Router(config) interface GigabitEthernet0/1

Router(config-if) spanning-tree portfast

Router(config-if) spanning-tree portfast edge

Router(config-if) spanning-tree portfast bpduguard

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking-time <值>

Router(config-if) spanning-tree portfast hold-count <值>

Router(config-if) spanning-tree portfast max-hold-time <值>

Router(config-if) spanning-tree portfast max-age <值>

Router(config-if) spanning-tree portfast hello-time <值>

Router(config-if) spanning-tree portfast forward-time <值>

Router(config-if) spanning-tree portfast backtracking