In below config @ second line if commands "snmp-server enable traps ospf errors " covers all the traps related ospf error why remaining all these commands are required ?NSPXS001#sh run | sec ospfsnmp-server enable traps ospf state-changesnmp-server e...

why port is not assigned into vlan what is use of vlan without port ,in which perspective vlan without port is used ?

where to get answer of any  error detected in logs of cisco switch & router

how to check error occurred in cisco switch or router for last 1hrs  

how to know reason of interface went down