BPDU Filtering也叫BPDU过滤,它的意义是在某个端口上过滤BPDU的发送和接收,在这里需先要来理解一个前提:任何一个加入到生成树的交换机端口,都会发送并接收到相应的BPDU报文,其中包括被规划为portfast的端口,它也会连续的(2秒间隔)向交换网络中发送BPDU报文(这是一个不争的事实在,用户可以取证portfast端口得到这个事...
cisco和H3C或锐捷交换机互联STP兼容问题 CISCO交换机与其直接上连设备为其它厂商时(如H3C或锐捷),有可能产生STP不兼容及其它问题,解决方法为思科交换机上连接口生成树.CISCO是无法针对接口直接关闭生成树的,但是我们可以利用Portfast配合bpdu filter或bpdu guard来完成,他们之间的区别又是什么: 1.Portfast 启用该特性的...
snmp-agent trap enable feature-name mstp [ trap-name { hwmstpibridgelostrootprimary | hwmstpiedgeportchanged | hwmstpiportbpduguarded | hwmstpiportloopguarded | hwmstpiportrootguarded | hwmstpiportstatediscarding | hwmstpiportstateforwarding | hwmstpitcguarded | hwmstppro...
greetings, you can apply root guard, on the root trunking interface, and when it will receive a bpdu with a lower priority, this message appears after root guard blocks a port: %SPANTREE-2-ROOTGUARDBLOCK: Port 1/1 tried to become non-designated in
snmp-agent trap enable feature-name mstp [ trap-name { hwmstpibridgelostrootprimary | hwmstpiedgeportchanged | hwmstpiportbpduguarded | hwmstpiportloopguarded | hwmstpiportrootguarded | hwmstpiportstatediscarding | hwmstpiportstateforwarding | hwmstpitcguarded | hwmstpproloopbackdetected...