Vim hais tias LAN keyboards siv virtual circuit switching, lawv muaj peev xwm technically xyuas kom meej tias bandwidth ntawm tag nrho cov input thiab output ports yog tsis-sib tham, ua rau high-ceev cov ntaub ntawv kis tau tus mob ntawm cov chaw nres nkoj yam tsis tsim kev sib kis bottlenecks. Qhov no ua rau kom cov ntaub ntawv dhau los ntawm cov ntaub ntawv network cov ntsiab lus thiab optimizes tag nrho network system. Kab lus no piav qhia txog tsib lub ntsiab technologies koom nrog.
1. Programmable ASIC (Application-Specific Integrated Circuit)
Qhov no yog ib qho kev sib koom ua ke hauv Circuit Court tshwj xeeb tsim los ua kom zoo dua Layer-2 hloov. Nws yog lub hauv paus kev koom ua ke thev naus laus zis siv hauv kev daws teeb meem niaj hnub no. Ntau lub zog tuaj yeem ua ke rau hauv ib lub nti, muab qhov zoo xws li kev tsim qauv yooj yim, kev ntseeg siab, kev siv hluav taws xob tsawg, kev ua haujlwm siab dua, thiab tus nqi qis dua. Programmable ASIC chips dav siv hauv LAN keyboards tuaj yeem hloov kho los ntawm cov tuam ntxhab - lossis txawm tias los ntawm cov neeg siv - kom ua tau raws li daim ntawv thov xav tau. Lawv tau dhau los ua ib qho ntawm cov thev naus laus zis tseem ceeb hauv LAN hloov daim ntawv thov.
2. Kev faib Pipeline
Nrog kev faib cov raj xa dej, ntau lub tshuab xa khoom xa tuaj tuaj yeem xa mus sai thiab ywj pheej ntawm lawv cov pob khoom. Nyob rau hauv ib lub raj xa dej, ntau lub ASIC chips tuaj yeem ua tiav ntau lub thav duab ib txhij. Qhov no concurrency thiab pipelining elevate forwarding kev ua tau zoo mus rau ib tug tshiab theem, ua kom tiav kab-rate kev ua tau zoo rau unicast, tshaj tawm, thiab multicast tsheb nyob rau hauv tag nrho cov ports. Yog li ntawd, kev faib cov raj xa dej yog qhov tseem ceeb hauv kev txhim kho LAN hloov nrawm.
3. Dynamically Scalable Nco
Rau cov khoom siv hloov pauv LAN siab heev, kev ua haujlwm siab thiab kev ua haujlwm zoo feem ntau vam khom lub cim xeeb ntse. Dynamically scalable nco technology tso cai rau ib tug hloov mus nthuav lub cim xeeb muaj peev xwm ntawm ya raws li cov kev cai tsheb. Hauv Layer-3 keyboards, ib feem ntawm lub cim xeeb yog ncaj qha cuam tshuam nrog lub tshuab xa mus, ua kom muaj kev sib txuas ntxiv ntawm ntau qhov interface modules. Raws li tus naj npawb ntawm forwarding engines nce, lub cim xeeb txuam nrog expands raws li. Los ntawm kev ua cov raj xa dej raws li ASIC, buffers tuaj yeem tsim ua kom muaj zog kom nce kev siv lub cim xeeb thiab tiv thaiv pob ntawv poob thaum cov ntaub ntawv tawg loj.
4. Advanced Queue Mechanisms
Txawm hais tias lub network muaj zog npaum li cas, nws tseem yuav raug kev txom nyem los ntawm congestion nyob rau hauv lub network txuas. Kev lig kev cai, kev khiav tsheb ntawm qhov chaw nres nkoj yog khaws cia rau hauv ib qho kev tso zis ib zaug, ua tiav nruj me ntsis hauv FIFO kev txiav txim tsis hais qhov tseem ceeb. Thaum cov kab puv puv, cov pob ntawv ntau dhau raug tso tseg; thaum lub queue lengthens, ncua nce. Cov txheej txheem queuing ib txwm ua rau muaj teeb meem rau lub sijhawm tiag tiag thiab kev siv multimedia.
Yog li ntawd, ntau tus neeg muag khoom tau tsim cov txheej txheem queuing technologies los txhawb cov kev pabcuam sib txawv ntawm Ethernet ntu, thaum tswj kev ncua sijhawm thiab jitter. Cov no tuaj yeem suav nrog ntau theem ntawm cov kab hauv ib qhov chaw nres nkoj, ua kom muaj kev sib txawv ntawm cov tsheb khiav zoo dua. Multimedia thiab cov ntaub ntawv lub sijhawm tiag tiag tau muab tso rau hauv cov kab tseem ceeb tshaj plaws, thiab nrog rau kev sib tw ncaj ncees, cov kab no tau ua tiav ntau zaus - tsis tas tsis quav ntsej cov kev lag luam qis dua. Cov neeg siv daim ntawv thov ib txwm tsis pom cov kev hloov pauv hauv lub sijhawm teb lossis dhau mus, thaum cov neeg siv khiav cov ntawv thov tseem ceeb tau txais cov lus teb raws sijhawm.
5. Automatic Traffic Classification
Hauv kev sib kis hauv network, qee cov ntaub ntawv ntws tseem ceeb dua lwm tus. Layer-3 LAN keyboards tau pib siv cov cuab yeej sib faib tsheb tsis siv neeg kom paub qhov txawv ntawm ntau hom thiab qhov tseem ceeb ntawm kev khiav tsheb. Kev xyaum qhia tau hais tias nrog kev faib tawm tsis siv neeg, cov keyboards tuaj yeem qhia cov pob ntawv ua cov raj xa dej kom sib txawv ntawm cov neeg siv khoom tsim, ua tiav qhov qis latency thiab kev xa mus rau qhov tseem ceeb. Qhov no tsis yog tsuas yog muab kev tswj hwm zoo thiab kev tswj hwm rau cov kwj deg tshwj xeeb, tab sis kuj tseem pab tiv thaiv kev sib tsoo hauv network.
Post lub sij hawm: Nov-20-2025