Static routing is defined by the user or network administrator routing information configured manually. When the state of the network topology or link changes, the network administrator needs to manually modify the routing table static routing information related. Static routing information by default is private and will not be passed to other routers . Of course, the network administrator can also set the router to become shared. Static routing is generally applicable to simple network environment, in this environment, network administrators easy clear understanding of the network topology, easy to set the correct routing information.
In a network of support DDR (dial-on-demand routing), a dial-up link called only when needed, and therefore can not offer to change the routing information for dynamic routing information table. In this case, the network is also suitable for use static routing.
advantage:
Another benefit of using static routing is that network security confidentiality high. Since dynamic routing exchange their routing tables between routers need frequent, and the analysis of the routing table can reveal information about the network topology and network addresses and the like. Therefore, the network for security reasons also can configure static routes. Do not take up network bandwidth, because no static routing update traffic.