OSPF monitor and monitoring process

The service on The invention claims a network monitor passively collecting data private network. The data network connection network controller, said network controller control automatic exchanging an transmission network and network element. The network controller is respectively protocol informs the network topology and state information of producing the local saving regularly. The monitoring device of filtering the predetermined protocol type the protocol frame, and unmating the network transmission from the topology and state information, and is the information patterned displays the user.