| Subject | English | Chinese simplified |
| comp., MS | backup designated router | 备份指定路由器 (An OSPF router that forms adjacencies with all other routers on a multiple access network and becomes the designated router when the designated router becomes unavailable) |
| comp., MS | designated router | 指定路由器 (An OSPF router that forms adjacencies with all other routers on a multiple access network) |