aal1 and segmentation and reassembly layer
TRANSCRIPT
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7/28/2019 AAL1 and Segmentation and Reassembly Layer
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EEL5
Ft treasdor sorvfho nete uafts wftc e hmasteat ift
reto ean tcofr nolfvory wftc tco sebo ift"reto!
^co treasdor md tfbfa` fadmrbetfma iotwooa
smurho ean nostfaetfma!
^co treasdor md struhturo fadmrbetfma iotwooa
smurho ean nostfaetfma!
^co fanfhetfma md lmst mr Orrmron fadmrbetfma!ftprmvfnos sorvfho dmr orrmr notohtfma ean
hmrrohtfma
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Xo`boatetfma ean Yoessobily Leyor
^co XEY sui leyor ehhopts >0 iyto ilmhk drmb
HX ean propoans mao iyto dmr coenor!
^co dfrst dmur ifts roprosoat soquoaho aubior!
ft hmatefas tcroo ifts soquoaho aubior drmb
5"0 ean 5 ift dmr HXF!
^co lest dmur ifts md coenor hmatefas XAW
wcfhc fs uson tm prmtoht XA dfoln!
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Duahtfmas md XEY
Beppfa` duahtfma: ft prmvfnos beppfa` iotwooaHX ean E^B leyor! tco XEY sui"leyor propoansmao iyto coenor ean >0 iytos pehkot!
Xoquoaho aubiorfa`: tco XEY sui"leyor prmvfnosof`ct soquoaho aubiorfa` usfa` 8 ift XA dfoln!
Xyahcrmafzetfma:
Orrmr Wrmtohtfma: ft elsm prmvfnos orrmr prmtohtfmadmr > ift XA dfoln usfa` XAW dfoln! wcflo soanfa`XEY"WN_ tco soanor helhuletos Hcohksub eanpleho ft fa HYH dfoln
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7/28/2019 AAL1 and Segmentation and Reassembly Layer
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^co rohofvor mporetos fa twm bmnos: Hmrrohtfmabmno ean Notohtfma bmno!
Am orrmr hmrrohtfma fs nmao fa tco notohtfmabmno, maly orrmr hcohkfa` fs pordmrbon! tcorohofvor sterts fa hmrrohtfma bmno!
Fa hmrrohtfma bmno, tco rohofvor oxebfaos tcoXEY"WN_ coenor iy hcohkfa` tco HYH ifts eanperfty ift!
Fd ea orrmr fs notohton tco rohofvor hcea`os tm
notohtfma bmno! Fd tco orrmr fa tco coenor fssfa`lo ift orrmr, tco orrmr fs hmrrohton! mtcorwfsonohleron es favelfn XA!
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Hmavor`oaho sui"leyor
Ft pessos coenor ean peylmen! Ceanlfa` holl noley verfetfmas: wo befatefa tcfs iy
usfa` nubby holls!
Holl soquoahfa`: lmst mr bfs"fasorton holls eronotohton!
^fbfa` fadmrbetfma treasdor ean Hlmhk rohmvory:syahcrmafzetfma fs befatefaon
Wertfelly dfllon holls: uatfl >0 iytos ero dfllon, e hollfs amt treasbftton! iut ft elsm suppmrt pertfellydfllon holls tm io treasdorron!
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Xmurho hlmhk droquoahy rohmvory
_sos hmahopt md hfrhuft obuletfma! tco nete
soat et tco reto scmuln io rohofvon iy tco
rohofvor et tco sebo reto!
Xyahcrmamus Yosfnuel tfbo Xtebp
Eneptfvo hlmhk botcmn
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7/28/2019 AAL1 and Segmentation and Reassembly Layer
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Eaelysfs md EEL5
Hcerehtorfstfhs: ft fs nosf`aon tm herry vmfho ean
tm obuleto tco hcerehtorfstfhs md e typfhel ^NB
hmaaohtfma!
Xui"Leyorfa`: Fa tcfs wo heaamt nfvfno tco drebo
so`boats ean roessobilo holls drmb drebos! tcus
twm sui"leyor ero hmbifaon tm dmrb e sfa`lo leyor!
Coenor-treflor dmrbet: Fa EEL5 tco maly coenorennon fs tco mao iyto XEY"WN_ coenor! tcfs ces
dmur ifts XA ean > ifts XAW!
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7/28/2019 AAL1 and Segmentation and Reassembly Layer
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Mvorcoen: tco mvorcoen md EEL5 fs tm eppoan
tco mao iyto coenor fatm oehc EEL5 drebo!
Nrewiehks: mao md tco bejmr nrewiehk fs ft fs
fll"sufton tm suppmrt lmw"reto epplfhetfmas
ioheuso md noley favmlvon fa dfllfa` e hmbploto
drebo! Pcflo pertfelly dfllon holls botcmnssuppmrts lmw"reto, noley soasftfvo epplfhetfmas
tcfs hmbos et tco hmst md weston ieanwfntc
nuo tm oxhossfvo pennfa`!
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7/28/2019 AAL1 and Segmentation and Reassembly Layer
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EEL9
EEL9 Wrmvfnos:
Ieanwfntc"oddfhfoat treasbfssfma md lmw"reto
Xcmrt ean verfeilo loa`tc pehkots fa noley soasftfvo
epplfhetfma!
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7/28/2019 AAL1 and Segmentation and Reassembly Layer
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Hcerehtorfstfh doeturo md EEL9
Ieanwfntc"oddfhfoat treasbfssfma md lmw"reto ean Xcmrt ean
verfeilo loa`tc pehkots fa noley soasftfvo epplfhetfma!
Ft Wrmvfnos dmr tco treasdor md tfbo"soasftfvo-verfeilo ift
treddfh!
Ft prmvfno e boeas dmr hmbprossfma ean sfloaho supprossfma
tohcafquos!
Ft Oaeilos bmro tcea mao EEL9 hceaaol ma e sfa`lo vfrtuel
hfrhuft!
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7/28/2019 AAL1 and Segmentation and Reassembly Layer
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EEL9 Leyor nfvfnon fa tm twm perts
5! Hmbbma Wert sui leyor #HWX&
Fts duahtfma fahluno pehke`fa` tco verfeilo peylmen fatm
holls ean prmvfnfa` orrmr hmrrohtfma
9! Xorvfho spohfdfh Hmavor`oaho Xui leyor #XXHX& ^cfs leyor fs uson tm oaceaho tco sorvfho prmvfnon iy HWX!
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HX?0? E B Eneptetfma Leyor 59
EEL ^ypo 9 Wehkots
EEL9 prmvfnos ieanwfntc"oddfhfoat treasbfssfma md lmw"reto, scmrt, ean verfeilo"sfzo pehkots dmr noley soasftfvoepplfhetfmas
EEL9 usos mao E^B hmaaohtfma iotwooa twm pmfats tm
herry pehkots drmb bultfplo aetfvo hmaaohtfmas ^co E B peylmens drmb suhhossfvo holls md tco E B
hmaaohtfma ero uson es e iyto stroeb ma wcfhc pehkots drmbnfddoroat aetfvo hceaaols, hellon lm`fhel lfak hceaaols#LLHs&, ero pehkon wftcmut ro`ern tm tco holl imuanerfos
E hceaaol fnoatfdfhetfma #HFN& dfoln fs uson fa tco pehkotcoenor tm fnoatfdy tco LLH tm wcfhc e pehkot iolma`s
E loa`tc fanfhetmr #LF& dfoln fs uson tm fnoatfdy tcoimuanerfos md verfeilo"loa`tc LLH pehkots
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HX?0? E B Eneptetfma Leyor 58
EEL 9 Xtruhturo
XXHX"WN_ Coenor
#fd prosoat&
XXHX"WN_ ^reflor
#fd prosoat&XXHX"WN_ Weylmen
XXHX"WN_
Wehkot Coenor
#WC&
Wehkot Weylmen
#WW&
Wehkot
Xtert Dfoln
#X^D&HWX"WN_ Weylmen
HWX"WN_
Holl Coenor Holl Weylmen
Xorvfho Xpohfdfh
Hmavor`oaho
Xuileyor #XXHX&
Hmbbma Wert
Xuileyor #HWX&
E^B Leyor
EEL"XEW
E^B"XEW
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HX?0? E B Eneptetfma Leyor 5>
Dmrbet md EEL9 Wehkot
Hceaaol Fnoatfdfhetfma #HFN&: _afquoly fnoatfdfos tco fanfvfnuel usor hceaaol #LLH&
wftcfa tco EEL9, ean ellmws up tm 9>3 #3 " 9??& fanfvfnuel usors wftcfa oehc EEL9
struhturo!
Loa`tc Fanfhetmr #LF&: Fnoatfdfos tco loa`tc md tco LLH pehkot essmhfeton wftc oehc
fanfvfnuel usor, ean essuros hmavoyeaho md verfeilo peylmen!
_sor"tm _sor Fanfhetfma #__F&: Wrmvfnos e lfak iotwooa HWX ean ea epprmprfeto XXHX
tcet setfsdfos tco cf`cor leyor epplfhetfma! Nfddoroat XXHX prmtmhmls bey io nodfaon tm
suppmrt spohfdfh EEL9 usor sorvfhos, mr `rmups md sorvfhos! ^co XXHX bey elsm io aull!
HFN
3 ifts
Fadmrbetfma
5 tm >?-4> mhtots
LF
4 ifts
__F
? ifts
COH
? ifts
Wehkot Coenor #WC& Wehkot Weylmen #WW&
Wehkot
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HX?0? E B Eneptetfma Leyor 5?
Dmrbet md EEL9 HWX"WN_
Wehkots ero hmbifaon fatm HWX"WN_ peylmen ^co Mddsot Dfoln #MXD& fnoatfdfos tco lmhetfma md tco stert md tco
robefafa` loa`tc md tco pehkot tcet pmssfily sterton fa tco prohonfa` hollean fs hmatfaufa` fa tco hurroat holl
Nete fato`rfty fs prmtohton iy tco Xoquoaho Aubior #XA&
^co Xtert Dfoln fs prmtohton drmb orrmr iy e Werfty ift #W& Pcoa ft fs aohossery tm treasbft e pertfelly dfllon holl tm lfbft pehkot
obfssfma noley, tco robefanor md tco holl fs pennon wftc ell zorm mhtots
MXD
4 iftsHWX Fadmrbetfma
XA
5 iftW
5 ift
WEN
7 tm >0 mhtots
Xtert Dfoln HWX"WN_ Weylmen
HWX "WN_
Holl Coenor
? mhtots
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HX?0? E B Eneptetfma Leyor 54
EEL 9 Xorvfho Xpohfdfh Hmavor`oaho
Xuileyor
XXHX fs tco lfak iotwooa tco EEL9 HWX ean
tco cf`cor leyor epplfhetfmas md tco fanfvfnuel
EEL9 usors
Xteanerns dmr XXHX ero iofa` novolmpon fa
F^_"^ ean E B Dmrub
E aull XXHX setfsdfos bmst bmiflo vmfho
epplfhetfmas
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Eaelysfs md EEL9
Hcerehtorfstfhs: ft fs uson tm nosf`a tm herry noleysoasftfvo epplfhetfmas lfko vmfho! ft fs buhcsufteilo tm herry lmw nete retos epplfhetfmas eanverfeilo ift retos! ft nmos amt prmvfno hfrhuft
obuletfma suppmrt! Xui"Leyorfa`:EEL9 fs nfvfnon fatm twm sui"leyors"
XXHX ean HWX!XXHX prmvfnos oaceahonduahtfmaelfty ean fs fbploboatetfma"nopoanoat!
^co HWX oahepsuletos tco usor peylmen fa e HWXpehkot ean oahepsuletos HWX pehkot fa mao mrbmro HWX"WN_!
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Coenor-^reflor Dmrbet"Fa EEL9 tcoro ero twm
coenors tco HWX pehkot coenor ean tco HWX"
WN_ coenor!
Mvorcoen:"Mvorcoen fs bmro tcea EEL5
ioheuso fa ennftfma tm mao iyto HWX"WN_
coenor, tcoro fs e 8 iyto por HWX pehkot
mvorcoen!EEL9 fs buhc iottor!
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