Local Preference？

what is the advantage of policing opposite to shaping？

如何實(shí)現(xiàn)擁塞避免？

What is the next state of initial in spanning-tree protocol？

How should arouter that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）

what is four ospf area type？

兩ebgp鄰居發(fā)路由過來 ，哪些屬性重置？

QoS Mechanisms：問在部署QoS中要用的3個mechanisms是什么？

When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?（）

什么問題導(dǎo)致SERVER VTP密碼跟替他交換機(jī)VTP密碼不匹配？