OSPF: open shortest path first is a

OSPF: open shortest path first is a common dynamic routing protocol. It conforms to the link state routing protocol. When the network changes, it uses a single algorithm to respond immediately; it uses the triggered update message; it does not belong to anyone. Classified routing protocol, support VLSM, identify sub network; with the concept of region, this is a practical management method. After using the protocol in the intranet, most paths will be calculated and generated by the protocol itself, without manual configuration. When the network topology changes, the protocol can automatically calculate and correct the path, which greatly facilitates the network management. It must be used in the adaptive network environment, otherwise its effect will be greatly reduced and even lead to failure.