| Subject | English | Polish |
| comp., MS | backup designated router | router przypisany do wykonywania kopii zapasowych (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 | router wyznaczony (An OSPF router that forms adjacencies with all other routers on a multiple access network) |