Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Open Shortest Path First (OSPF) yakagadzirirwa seye mukati memusuwo protocol (IGP), yekushandisa mune yakazvimiririra system senge yenzvimbo yenzvimbo (LAN). Inoshandisa Dijkstra's algorithm, inozivikanwawo se shortest path first (SPF) algorithm. Senzira yekubatanidza-state routing protocol yakavakirwa pa link-state algorithm yakagadzirirwa ARPANET muna 1980 uye IS-IS routing protocol. OSPF yakatanga kugadziriswa muna 1989 seRFC 1131, iyo inozivikanwa seOSPF version 1. Basa rekuvandudza reOSPF risati rasimbiswa seyakavhurika standard rakatorwa zvakanyanya neDigital Equipment Corporation, iyo yakagadzira yayo yega DECnet protocols. Routing protocols senge OSPF inoverengera nzira ipfupi kuenda kunzvimbo kuburikidza netiweki yakavakirwa pane algorithm. Routing Information Protocol (RIP) ndiyo yokutanga yakashandiswa zvikuru, iyo yakaverenga nzira pfupi zvikuru yakavakirwa pa hops, ndiko kuti nhamba yemaruter ayo IP packet yaifanira kuyambuka kuti isvike kunzvimbo yainenge ichienda. RIP yakabudirira kushandisa nzira dzinoshanduka, apo matafura ekufambisa anochinja kana network topology ichichinja. Asi RIP haina kuchinjisa nzira dzayo zvichienderana nekuchinja kwemamiriro enetiweki, senge data-transfer rate. Kudiwa kwepurogiramu yokufambisa ine simba iyo yaigona kuverenga nzira inokurumidza zvikuru yokuenda kwainenge ichienda kwakawedzera. OSPF yakagadzirwa kuitira kuti nzira ipfupi kuburikidza nemambure yakaverengerwa zvichibva pamutengo wenzira, uchifunga nezve bandwidth, kunonoka uye mutoro. Nokudaro OSPF inoita kuverengwa kwemitengo yenzira pahwaro hwe link-cost parameters, iyo inogona kuremerwa nemubati. OSPF yakakurumidza kugamuchirwa nokuti yakasvika pakuzivikanwa nokuda kwekuverenga nenzira yakavimbika nzira kuburikidza nemakwikwi makuru uye akaoma emunharaunda. Sechinhu chinobatanidza hurumende yekufambisa protocol, OSPF inochengetedza hukama hwehutano hwehutano, izvo chaizvoizvo mapepa emagetsi, pane imwe nzira iyo inoshandiswa. Mamiriro ezvinhu enzira yakapihwa mumambure ndiwo mutengo, uye OSPF algorithm inobvumira router yega yega kuverenga mutengo wenzira kune chero kupihwa kunosvikika...  Mubvunzo: Chii chinonzi chinobatanidza router chinochengeta kubatana?
nharaunda muganhu router (ABR)