
gathagatha karar

oru network sevanam (allengil aaplikkeshan) oru prathyeka tharatthilulla traaphik transport cheiyunnathinu oru broadband network (prathyekichu oru atm network) upayogikkaan aagrahikkunnuvenkil, eathu tharatthilulla traaphik transport cheyyanamennum aaa traafikkinte prakadana aavashyakathakalekkurichum aadyam nettvarkkine ariyikkanam. aaplikkeshan eee vivarangal oru traaphik karaarinte roopathil netvarkkinu avatharippikkunnu.
traaphik vivaranam.
oru aaplikkeshan oru kanakshan abhyarthikkumbol, aaplikkeshan netvarkkilekku soochippikkunnu
eee paaraamettarukal kanakshanulla "traaphik discriptar" roopappeduthunnu.
sevanathinte tharam.
nilavil, anchu eiii. tii. emm phooram nirvachikkapetta sevana vibhagangal nilavilundu (pattika 1 kaanuka). eee sevana vibhagangal thammilulla adisthaana vyathyaasangal inipparayunna upavibhagangalil vivarichittundu. eee sevana vibhagangal traaphik savisheshathakalum qos aavashyakathakalum network swabhaavavumaayi bandhappeduthunnathinulla oru reethi nalkunnu. sevana vibhagangal thathsamayamo thathsamayamallaathatho aanennu visheshippikkappedunnu. cbr, arty-bbr ennivayaanu thalsamaya sevana vibhagangal. bakkiyulla moonnu sevana vibhagangal (enrt-bbr, ubr, abr) thathsamayamallaatha sevana vibhagangalaayi kanakkaakkappedunnu.
sthiramaaya bitt nirakk (cbr).
traaphik srothas lakshyasthaanavum thammilulla samaya samanvayathe antharleenamaayi aasrayikkunna sthiramaaya bitt nirakkil traaphik kondupookunna kanakshanukalkkaanu cbr sevana vibhaagam upayogikkunnathu. end systengalkku pravachikkaavunna prathikarana samayavum kanakshante jeevithakalam vare thudarchayaayi labhyamaya sthiramaaya bandwidth aavasyamulla eathu tharatthilulla daattaykkum anusrithamaayaanu cbr roopakalppana cheythirikkunnathu. bandwidthinte alavu oru peak sell rettu (pii. sii. aarr) aanu. viidiyoo conferencing, telephony (voys sevanangal) allengil interactive voys, audiyo polulla eathenkilum tharatthilulla oonn-demand sevanangal eee aaplikkeshanukalil ulppedunnu. telephony, native voys aaplikkeshanukal ennivaykkaayi cbr pravachikkaavunna delivari savisheshathakalulla kuranja latensi traaphik nalkunnu, athinaal ithu saadhaaranayaayi surcuted emuleshanaayi upayogikkunnu.
thalsamaya variable bitt nirakk (arty-bbr).
gathagatha srotassum lakshyasthaanavum thammilulla krithyamaaya samayathe aasrayikkunna gathagatham-variable nirakkil gathagatham kondupookunna kanakshanukalkkaayi arty-bbr sevana vibhaagam upayogikkunnu. itharathilulla sevana vibhaagam aavasyamulla traafikkinte oru udaaharanam variable nirakk, compress cheytha viidiyoo streamukal ennivayaanu. arty-bbr kanakshanukal upayogikkunna srothassukal kaalathinanusarichu vyathyaasappedunna nirakkil prakshepanam cheiyumennu prathekshikkunnu (udaaharanathinu, traaphik pottitherikkunnathaayi kanakkakkaam). thalsamaya vii. bii. aarr kanakshanukalude savisheshathakal peak sell rettu (pii. sii. aarr), susthira sell rettu (ezz. aarr. sii), paramavadhi burst sais (emm. bii. ezz) ennivayaanu. paramavadhi sii. tii. dii (sell transfer kaalathamasam) vyakthamakkiya moolyathinappuram kaalathamasam varuthunna sellukalkk aaplikkeshante moolyam ganyamaayi kuranjathaayi kanakkaakkappedunnu.
noonn-riyal-time variable bitt rettu (enrt-bbr).
traaphik srothas lakshyasthaanavum thammilulla samaya samanvayathe antharleenamaayi aashrayikkaathathum ennaal urappulla bandwidth allengil latensic oru sramam aavasyamullathumaaya variable bitt rettu traaphik kondupookunna kanakshanukalkkaayi enrt-bbr sevana vibhaagam upayogikkunnu. oru enrt-bbr sevana vibhaagam aavashyamaayi vannekkaavunna oru aaplikkeshan frame rile inter working aanu, avide frame rile sir (prathibaddhamaaya vivara nirakk) atm nettvarkkile bandwidth guarandiyilekku mapp cheiyunnu. kaalathaamasaparidhikalonnum enrt-bbr sevanavumaayi bandhappettirikkunnil.
labhyamaya bitt nirakk (eiii. bii. aarr).
eiii. bii. aarr. sevana vibhaagam enn. aarr. tii-vii. bii. aarinu samaanamaan, kaaranam traaphik srothas lakshyasthaanavum thammilulla samaya samanvayathe aashrayikkaathathum bandwidth allengil latensi ennivayude aavashyamaaya gyaarandikalonnum nilavillaathathumaaya variable bitt rettu traaphik transport cheiyunna kanakshanukalkkum ithu upayogikkunnu. traaphik orijanettarinu labhyamaya baandvidthinte alavu krameekarikkaan phloo-kantrol mekkaanisangal upayogikkunna mikacha gathagatha sevanam eiii. bii. aarr nalkunnu. eiii. bii. aarr. sevana vibhaagam praadhamikamaayi samaya samvedanakshamathayillaathum sevanathinte gyaarandikalonnum pratheekshikkaathathumaaya eathu tharatthilulla traafikkinum vendiyaanu roopakalppana cheythirikkunnathu. eiii. bii. aarinte nirakk-niyanthrana mechanixinode prathikarikkunnathin athinte transmission swabhaavam parishkkarikkan kazhiyunna tcp/aipi traafikkinum mattu laan adhishtitha protocolukalkkum eiii. bii. aarr sevanam saadhaaranayaayi munganana nalkunnathaayi kanakkaakkappedunnu.
interior atm netvarkkinullil labhyamaya vibhavangalile ettakkurachilukalkku marupadiyaayi traaphik uravidathe niyanthrikkunna feedback nalkaan abr resource maanejment (arm) cellukal upayogikkunnu. eiii. bii. aarr. kanakshanukalile sell traafikkinte ozhukk niyantrikkaan eiii. bii. aarr. phloo kantrol enna savisheshatha eee aarr. emm. cellukal upayogikkunnu. labhyamaya network vibhavangalude nyayamaaya vihitam labhikkunnathin feedbackinu anusrithamaayi end sisttam athinte traaphik nirakkumayi poruthappedumennu eiii. bii. aarr. sevanam prathekshikkunnu. nirddishta peak sell rettu (pii. sii. aarr) vare labhyamaya network resourceukalilekku vegathil praveshanam nalkuka ennathaanu eiii. bii. aarr sevanathinte lakshyam.
vyakthamaakkaatha bitt nirakk (yuu. bii. aarr).
traaphik srothas lakshyasthaanavum thammilulla samaya samanvayathe aashrayikkaatha variable bitt rettu traaphik kondupookunna kanakshanukalkkaayi ithu upayogikkunnathinaal yuu. bii. aarr sevana vibhaagavum enn. aarr. tii-vii. bii. aarinu samaanamaan. ennirunnaalum, eiii. bii. aaril ninnu vyathyasthamayi, upayokthaavin labhyamaya baandvidthinte alavu chalanathmakamaayi krameekarikkaan phloo-kantrol samvidaanangalonnumilla. kaalathaamasatheyum kosha nashtattheyum valare sahishnuthayulla aaplikkeshanukalkkaanu saadhaaranayaayi yuu. bii. aarr upayogikkunnathu. phayal kaimattangalum iii-meyilukalum polulla store-forwade traafikkinaayi internettu laan, vaan parithasthithikalil yuu. bii. aarr vijayam aasvadichittundu. eiii. bii. aarinte traaphik niyanthrana samvidaanangalodu upper-lair protocolukal prathikarikkunna reethikk samaanamaayi, tcp/aipi, mattu laan adhishtitha traaphik protocolukal ennivaykku atm nettvarkkile latensi allengil sell nashtappedunnathinodu prathikarikkunnathin avarude transmission swabhaavam parishkkarikkan kazhiyum.
traaphik paaraamettarukal.
oro eiii. tii. emm. kanakshanilum uravidathinte gathagatha savisheshathakal vivarikkunna oru koottam paaraamettarukal adangiyirikkunnu. eee paaraameettarukale sozhs traaphik paaraamettarukal ennu vilikkunnu. avaa [2] [5]:
sevana maanadandangalude gunanilavaaram.
oru atm netvarkkil oru kanakshan sajjeekarikkumbol oru koottam paaraamettarukal charcha cheyyappedunnu. oru kanakshante kyu. oo. ezz alakkunnathinum eiii. tii. emm leyarile end-tuu-end network prakadanam alakkunnathinum eee paaraamettarukal upayogikkunnu. eee paaraamettarukalude chila moolyangal paalikkunnathiloode network charcha cheytha koos urappunalkanam.

