Refer to the passage below and then answer the question afterwards in the same language as the passage: Passage: OSPF supports complex networks with multiple routers, including backup routers, to balance traffic load on multiple links to other subnets. Routers dzakapoteredza dziri mu broadcast domain imwe chete kana kumagumo ose e point-to-point link dzinotaurirana pamwe chete kuburikidza neOSPF protocol. Routers dzinogadzira adjacencies kana dzave dzakaonekwa. Kuonekwa uku kunotanga kana router ichizvizivisa pachayo mu protocol Hello packet. Pakugamuchirwa, izvi zvinogadzira mamiriro maviri uye hukama hwakanyanya. Ma routers muEthernet kana Relay Frame network anosarudza Designated Router (DR) uye Backup Designated Router (DRB) inoshanda senzvimbo yekuderedza traffic pakati pemaraireti. OSPF inoshandisa zvese unicast uye multicast modes kutumira "Hello" kutumira mapakeji uye mamiriro ekuvandudza Mubvunzo: Kana router iri mu link yekuonekwa?
inozvizivisa pachayo muHello protocol packet