ATM inotsanangurwa neAynchronous Transfer Mode. Ndiyo yakakwirira-network networking yakagadzirirwa kutsigira izwi, vhidhiyo uye nhepfenyuro dzekutsvaga, nekuvandudza kushandiswa uye hutano hwebasa (QoS) pamakwikwi emigwagwa yakakwirira.
ATM inowanzoshandiswa nevashandi vepainternet pamakwikwi avo ega ari kure. ATM inoshanda pakusanganiswa kwe data data (Layer 2 mumutambo weOSI ) pamusoro pefiber kana twisted-pair pair cable.
Kunyange zvazvo iri kupera mukuda kweNNN (inotevera generation network), iyi protocol inokosha kune SONET / SDH mushure, PSTN (public switched telephone network) uye ISDN (Integrated Services Digital Network).
Cherechedza: ATM inomirirawo automated teller machine . Kana uri kutsvaga rudzi rweATM network (kuti uone kuti maATM aripi), unogona kuwana VTM's ATM Locator kana Mastercard ATM Locator kuti ive yakakosha.
Kuti ATM Networks Inoshanda Sei?
ATM inopesana nedzimwe dzakawanda data link technology technologies seEthernet nenzira dzinoverengeka.
Kune rimwe, ATM inoshandisa zero kufamba. Panzvimbo yekushandisa shanduro, madivashoni akazvitsaurira anozivikanwa seATM switches anogadzirisa pfungwa-kusvika-kumwe kuwirirana pakati pemagumo uye data inotenderera zvakananga kubva kune imwe nzvimbo kuenda kune imwe nzvimbo.
Uyezve, panzvimbo yekushandisa shanduko-yakareba mapeti akadai seEthernet neInternet Protocol, ATM inoshandisa masero akaenzana akachengetedza data. Aya ma-cell ATM ane makumi mashanu nemashanu pakureba, anosanganisira 48 bytes yedata uye mashanu neets of information header.
Sero rimwe nerimwe rinoshandiswa panguva yavo. Kana imwe yapera, nzira yacho inoshevedza kuti sero inotevera iite. Ichi ndicho chikonzero chinonzi soynchronous ; hapana chimwe chazvo chinoenda panguva imwechete kune mamwe masero.
Kubatanidza kunogona kufanirwa kufananidzirwa nemupiririri webasa kuti aite dunhu rakatsaurirwa / rakagadzikana kana kushandurwa / kugadziriswa pane zvaanoda uye ozoguma pamagumo ekushandiswa kwayo.
Zvine zvinyorwa zvitsva zvinowanzowanikwa nekuda kwebasa re ATM: Inowanikwa Bit Bit, Constant Bit Rate, Isingazivikanwi Bit Bit Rate uye Variable Bit Rate (VBR) .
Kuitwa kweATM kunowanzoratidzwa nenzira yeOC (Optical Carrier) mazinga, akanyorwa se "OC-xxx." Maitiro ekukwirira akakwirira se10 Gbps (OC-192) anonyatsogoneka neATM. Zvisinei, zvakanyanya kufanana neATM ndeye 155 Mbps (OC-3) uye 622 Mbps (OC-12).
Pasina kugadzirisa uye nemasero akareba-masero, mitambo inogona kutora nyore nyore kutakura bandwidth pasi peATM pane mamwe maitiro eEthernet. Iko mari yepamusoro yeATM inowanikwa neEthernet chimwe chezvinhu izvo zvakagadzirisa kubvumirwa kwayo kumasana uye mamwe maitiro ekushanda, masheya akadai.
Wireless ATM
A wireless network neATM core inonzi Mobile ATM kana ATM isina wireless. Iyi mhando yemagetsi eATM yakagadzirirwa kupa zviyero zvekufambisa zvemafoni.
Kufanana nemamwe magetsi asina mhando, ma ATM masero anoparadzirwa kubva pachigaro chepamusoro uye anotumirwa kumagetsi ekufambisa apo kuchinja kweATM kuchiita basa rekufamba.
VoATM
Imwe protocol ye data iyo inotumira izwi, video uye data mapaketi kuburikidza ne network ATM inonzi Voice over Asynchronous Transfer Mode (VoATM). Izvo zvakafanana neVoIP asi haishandisi IP protocol uye inodhura zvikuru kushandisa.
Iko rudzi rwemashoko izwi rinowanikwa muAAL1 / AAL2 mapepa ATM.