问答题port-security的restrictaction是什么意思?
问答题spanning-tree关于listeningandlearningtime如何adjustandchangeamountoftime?
问答题WhichOSPFnetworktypeisidealforpartiallymeshedNBMAnetworksbecauseitiseasytoconfigure(requiresnoconfigurationofneighborcommands),consumesonlyoneIPsubnet,andrequiresnodesignatedrouterelection?
问答题WhichOSPFfeatureallowsaroutertocontinuetoforwardpacketswhileundergoingspecific,well-knownfailureconditions?
问答题WhyareRegistermessagesneededinPIMSM?