Routing process can summarize for a node finds to every possible destination path. Routing appeared in from the first layer to the seventh levels of each layer. People are familiar with the routing is to appear on the third floor (network layer), so we also only discuss the third floor IP routing.
Exchange routing information agreement connecting many of the world's routers, although these router is not a kind, through the routing table may be able to provide their common network view. Routing tables for router storage reaching a destination network office all the needed the necessary information.
