Open shortest path first ( ospf ) is one of the routing protocol of internet . originally , it was developed to be the substitute for routing information protocol ( rip ) Ospf ( openshortestpathfirst ,開放最短路徑優(yōu)先)是internet路由選擇協(xié)議的一種,最初是為替代rip協(xié)議開發(fā)的,目前已成為構建大型網(wǎng)絡最常用的路由選擇協(xié)議。