Chekutanga, iyo OLT ndeye optical line terminal, uye iyo ONU ndeye optical network unit (ONU).Iwo ese ari maviri optical transmission network yekubatanidza michina.Ndiwo mamodule maviri anodiwa muPON: PON (Passive Optical Network: Passive Optical Network).PON (passive optical network) zvinoreva kuti (optical distribution network) haina midziyo yemagetsi uye magetsi emagetsi.ODN yese inoumbwa nezvinongoita senge optical splitters (Splitter) uye haidi inodhura inoshanda inoshanda yemagetsi.A passive optical network inosanganisira optical line terminal (OLT) yakaiswa pacentral control station, uye batch rekutanga-level matching optical network units (ONUs) yakaiswa panzvimbo yemushandisi.Iyo optical distribution network (ODN) pakati peOLT neONU ine optical fibers uye passive optical splitters kana couplers.
Router (Router) chishandiso chinobatanidza kune akasiyana siyana nharaunda network uye yakakura nzvimbo network muInternet.Iyo inozvisarudzira uye inoseta nzira zvinoenderana nechiteshi mamiriro, uye inotumira masaini munzira yakanakisa uye nekurongeka.Iyo router ndiyo hubhu yeInternet, "mapurisa emumigwagwa."Parizvino, ma routers ave achishandiswa zvakanyanya mukufamba kwese kwehupenyu, uye zvigadzirwa zvakasiyana-siyana zvemagiredhi akasiyana zvakave simba guru pakuona akasiyana-siyana emusana network network yekubatanidza, backbone network interconnections, uye backbone network uye Internet interconnection services.Musiyano mukuru uripo pakati pekutenderera uye shanduko ndeyekuti switch inoitika pachikamu chechipiri cheOSI referensi modhi (data link layer), nepo kutenderera kunoitika pachikamu chechitatu, network network.Musiyano uyu unoona kuti nzira uye switch inoda kushandisa ruzivo rwakasiyana rwekutonga mukuita kwekufambisa ruzivo, saka nzira mbiri dzekuzadzisa mabasa avo akasiyana.
Router (Router), inozivikanwawo senge gedhi mudziyo (Gateway), inoshandiswa kubatanidza akawanda zvine musoro akapatsanurwa network.Iyo inonzi inonzwisisika network inomiririra imwechete network kana subnet.Kana data ichiendeswa kubva kune imwe subnet kuenda kune imwe, inogona kuitwa kuburikidza nebasa rekufambisa re router.Nokudaro, router ine basa rekutonga kero yetiweki uye kusarudza nzira ye IP.Inogona kumisikidza inochinjika yekubatanidza mune yakawanda-network yekubatanidza nharaunda.Inogona kubatanidza ma subnet akasiyana neakasiyana zvachose data pakiti uye midhiya nzira dzekuwana.Iyo router inongogamuchira sosi chiteshi kana Ruzivo rwemamwe ma router imhando yemidziyo yakabatana pane network layer.
Nguva yekutumira: Aug-20-2021