Switch(config-if)#spanning-tree bpduguard enable //在特定接口激活bpduguard特性 3).Bpdufilter特性 Switch(config)#spanning-tree portfast bpdufilter default //为所有接口激活bpdufilter特性 Switch(config-if)#spanning-tree bpdufilter enable //在特定接口激活bpdufilter特性 4).Uplinkfast特性(强烈建议在末梢交...
防止交换机在启用"portfast"的接口上发送BPDU,并且将接收到的所有BPDU都丢弃. 在特定的portfast端口上配置: sw1(config-if)#spanning-tree bpdufilter enable (bpdufilter: Don't send or receive BPDUs on this interface) sw3(config)#spanning-tree portfast bpdufilter default //全局的portfast端口上,都生效 ...
Portfast Edge BPDU Guard Default is disabled Portfast Edge BPDU Filter Default is disabled Loopguard Default is disabled PVST Simulation Default is enabled but inactive inpvstmode Bridge Assurance is enabled but inactive inpvstmode Ether Channel misconfig guard is enabled Configured Pathcost method used...
BPDU Guard特性可以全局启用也可以基于基于接口的启用,两种方法稍有不同.当在启用了Port Fast特性的端口收到了BPDU后,BPDU Guard特性将关闭(err-disable)该端口(正常情况是启用了Port Fast特性的端口不可能收到BPDU). 配置方法: Switch(config)# spanning-tree portfast bpduguard default /---在启用了Port Fast特...
Bpdufilte: SW1(config)#spanning-tree portfast edge bpdufilter default 如果把SW1的E1/1配置为bpdufilter则该接口不会发送BPDU报文,则对端SW2 E1/1接口收不到任何BPDU报文从BLK状态变为转发FWD,此时就产生环路。---不建议使用 === Loopbuard: 在DP指定端口配置Loopbuard: SW1(config)#spanning-tree mode...
Portfast Edge BPDU Guard Default is disabled Portfast Edge BPDU Filter Default is disabled Loopguard Default is disabled PVST Simulation Default is enabled but inactive inpvstmode Bridge Assurance is enabled but inactive inpvstmode Ether Channel misconfig guard is enabled ...
A. spanning-tree guard root B. spanning-tree portfast bpduguard default C. spanning-tree bpduguard enable D. spanning-tree bpdufilter enable E. spanning-tree portfast bpdufilter default 相关知识点: 试题来源: 解析 E.spanning-tree portfast bpdufilter default 反馈...
spanning-tree portfast：设置某个端口不进行生成树计算，那就不需要等待这50秒了，可以直接进入转发。BPDU Filter：如果在全局模式下配置，所有启用了portfast的端口如果接收到了BPDU，会立即禁用portfast，并使端口参与STP运算，成为STP端口；如果在接口模式下配置，那么接口将不会发送BPDU，而如果接收到BPDU...
spanning-tree portfast bpdufilter default(default是所有接口的意思,当收到BPDU时,STP把该端口变为普通端口,不再是portfast端口。) spanning-tree vlan 870 priority 4096 interface Port-channel2 switchport access vlan 870 switchport mode access interface Port-channel3 description to-3560-2-g0/7-12 ...
spanning-tree portfast bpdufilter default Example: Device(config)# spanning-tree portfast bpdufilter default Globally enables BPDU filtering. By default, BPDU filtering is disabled. Step 4 interface interface-id Example: Device(config)...