TCP Window Size Scaling

 

Mht Guaa Djjhss tk kur 7?4 Jcsjk Ahsskes Ekw  

Jkurshs

Ztdrt $4 _rcda

Gkrub

Zuppkrt

Akmce

Zhdrj`...

Jcsjk ¹ JJE\ VKX_H Sku drh `hrh> @kbh ¹ @kbh ¹ Jcsjk ¹

_J\ ]ceokw Zczh Zjdacem

_dfah kg Jkethets JJE\ VKX_H

󰁤

󰁯

󰁩

󰁳

󰁷

 

 

 

 

 

_J\ (_rdesbcsscke Jketrka \rktkjka) cs d jkeehjtcke krchetho prktkjka w`cj` bhdes t`dt wh ihhp



Xect 4> \rhpdrdtcke



Xect 6> Vkutcem Gueodbhetdas

trdji kg `kw buj` odtd `ds fhhe trdesbcttho. _`h sheohr wcaa trdesbct skbh odtd deo t`h rhjhcvhr

C\v? Hxpadceho

`ds tk djiekwahomh ct. ]`he wh oke–t rhjhcvh t`h djiekwahombhet ce tcbh t`he t`h sheohr wcaa rh-

C\v? @hdohr Gchaos

trdesbct t`h odtd.

Cetrkoujtcke tk DV\ O@J\ Zhrvhr

_J\ ushs ‑wceokwcem‒ ‑wceokwcem‒ w`cj` bhdes t`dt d sheohr wcaa sheo keh kr bkrh odtd shmbhets deo t`h

O@J\ Vhady

rhjhcvhr wcaa djiekwahomh keh kr daa shmbhets. ]`he shmbhets. ]`he wh st stdrt drt d _J\ jkeehjtcke, t`h `ksts wcaa ush d

Cetrkoujtcke tk _J\ deo XO\

rhjhcvh fuhr w`hrh wh thbpkrdrcay stkrh odtd fhgkrh t`h dppacjdtcke jde prkjhss ct.

_J\ @hdohr Gchaos _J\ ]ceokw Zczh Zjdacem

]`he t`h rhjhcvhr sheos de djiekwahombhet, ct wcaa thaa t`h sheohr `kw buj` odtd ct jde trdesbct

_J\ Fdeowcot` Ohady \rkoujt

fhgkrh t`h rhjhcvhr wcaa sheo de djiekwahombhet. ]h jdaa t`cs t`h wceokw sczh. sczh. Fdscjdaay, t`h

CJB\ Hxpadceho

wceokw sczh ceocjdths t`h sczh kg t`h rhjhcvh fuhr.

@kw tk jkemurh stdtcj rkuth ke Jcsjk CKZ Vkuthr

_ypcjdaay t`h _J\ jkeehjtcke wcaa stdrt wct` d sbdaa wceokw sczh deo hvhry tcbh w`he t`hrh cs d sujjhssgua djiekwahomhbhet, djiekwahomhbhet, t`h wceokw sczh wcaa cejrhdsh. @hrh–s de hxdbpah>

Xecjdst Gakkocem ouh tk Dsybbhtrcj Vkutcem 

Xect :> HCMV\



Xect ?> KZ\G



Xect 8> Vhocstrcfutcke



Xect 7> Vkuth Zhahjtcke



Xect => FM\ (Fkrohr Mdthwdy \rktkjka)



Xect 0> C\v7



Xect 3> Vhbkth Zcth Jkeehjtcvcty



Xect 4 Vkuthr Zhjurcty deo

Bdedmhbhet phrskeda hxphrchejh ]h ush jkkichs tk mcvh yku t`h fhst phrskeda hxphrchejh ke kur whfscth. Fy uscem kur whfscth, yku dmrhh tk kur ush kg jkkichs Vhdo bkrh.

\OGbyXVA hdscay tures whf pdmhs deo hvhe hetcrh whfscths cetk \OG!  

Dfkvh wh `dvh twk `ksts, t`h `kst ke t`h ahgt scoh wcaa sheo keh shmbhet deo t`h `kst ke t`h rcm`t scoh wcaa sheo de djiekwahombhet ce rhture. Zcejh t`h djiekwahomhbhet wds sujjhssgua, t`h wceokws sczh wcaa cejrhdsh>

_`h `kst ke t`h ahgt scoh cs ekw sheocem twk shmbhets deo t`h `kst ke t`h rcm`t scoh wcaa rhture d scemah djiekwahombhet. Hvhryt`cem cs wkricem eh sk t`h wceokw sczh wcaa cejrhdsh hvhe gurt`hr>

_`h `kst cs ekw sheocem gkur shmbhets deo t`h `kst ke t`h rcm`t scoh rhspkeos wct` d scemah djiekwahombhet. Ce t`h hxdbpah dfkvh t`h wceokw sczh ihhps cejrhdscem ds akem ds t`h rhjhcvhr sheos djiekwahombhets gkr daa kur shmbhets kr w`he t`h wceokw sczh `cts d jhrtdce bdxcbub acbct. ]`he t`h rhjhcvhr okhse–t sheo de djiekwahombhet wct`ce d jhrtdce tcbh phrcko (jdaaho t`h rkueo-trcp tcbh) t`he t`h wceokw sczh wcaa fh rhoujho. ]`he de cethrgdjh `ds jkemhstcke t`he ct–s pksscfah t`dt _J\ pdjihts drh orkppho. _k ohda wct` t`cs, _J\ `ds d eubfhr kg damkrct`bs t`dt ohda wct` jkemhstcke jketrka. Keh kg t`hb cs jdaaho sakw stdrt .

\OGbyXVA hdscay tures whf pdmhs deo hvhe hetcrh whfscths cetk \OG!  

Jkemhstcke kjjurs w`he w`he t`h cethrgdjh `ds tk trdesbct bkrh odtd t`de ct jde `deoah. Ct–s quhuh(s) wcaa `ct d acbct deo pdjihts wcaa fh orkppho.

]ct` _J\ sakw stdrt, t`h wceokw sczh wcaa cectcdaay mrkw hxpkehetcdaay (wceokw sczh okufahs) fut kejh d pdjiht cs orkppho, t`h wceokw sczh wcaa fh rhoujho tk keh shmbhet. Ct wcaa t`he mrkw hxpkehetcdaay dmdce uetca t`h wceokw sczh cs `dag kg w`dt ct wds w`he t`h jkemhstcke kjjurrho. Dt t`dt bkbhet, t`h wceokw sczh wcaa mrkw acehdray cesthdo kg hxpkehetcdaay. ]`he de cethrgdjh mhts jkemhstho, ct–s pksscfah t`dt daa ykur _J\ jkeehjtckes wcaa hxphrchejh hxphrchejh _J\ sakw stdrt. \djihts wcaa fh orkppho deo t`he daa _J\ jkeehjtckes wcaa `dvh d sbdaa wceokw sczh. _`cs cs jdaaho _J\ makfda syej`rkeczdtcke. syej`rkeczdtcke. @hrh–s w`dt ct akkis acih>

fauh deo mrhhe mrhhe acehs  acehs drh t`rhh ochrhet _J\ jkeehjtckes. _`hsh _J\ jkeehjtckes stdrt dt _`h krdemh, krdemh, fauh deo ochrhet tcbhs deo dgthr dw`cah, t`h cethrgdjh mhts jkemhstho deo pdjihts kg daa _J\ jkeehjtckes drh orkppho. ]`dt `dpphes cs t`dt t`h wceokw sczh kg daa t`hsh _J\ jkeehjtckes wcaa orkp tk keh deo kejh t`h cethrgdjh jkemhstcke cs mkeh, daa t`hcr wceokw sczhs wcaa cejrhdsh dmdce. _`h cethrgdjh t`he mhts jkemhstho dmdce, t`h wceokw sczh orkps fdji tk keh deo t`h stkry rhphdts ctshag. _`h rhsuat kg t`cs cs t`dt wh oke–t ush daa t`h dvdcadfah fdeowcot` t`dt kur cethrgdjh `ds tk khr. Cg yku akki dt t`h ods`ho aceh yku jde shh t`dt wh t`h dvhrdmh cethrgdjh utcaczdtcke cse–t vhry `cm`. _k prhvhet makfda syej`rkeczdtcke wh jde ush VHO (Vdeokb Hdray Ohthjtcke) Ohthjtcke).. t`cs cs d ghdturh t`dt orkps ‑rdeokb‒ pdjihts grkb _J\ kws fdsho ke t`h eubfhr kg pdjihts ce d quhuh deo t`h _KZ (_yph kg Zhrvcjh) bdricem kg t`h pdjihts. ]`he pdjihts drh orkppho fhgkrh d quhuh cs guaa, wh jde dvkco t`h makfda syej`rkeczdtcke.

\OGbyXVA hdscay tures whf pdmhs deo hvhe hetcrh whfscths cetk \OG!  

_`h heo rhsuat wcaa akki scbcadr tk t`cs>

]`he wh ush VHO, kur dvhrdmh cethrgdjh utcaczdtcke wcaa cbprkvh. Ekw yku `dvh de cohd w`dt t`h _J\ wceokw sczh cs dfkut, aht–s tdih d akki dt d rhda hxdbpah kg `kw t`h wceokw sczh cs usho. ]h jde ush wcrhs`dri gkr t`cs.

]crhs`dri Jdpturhs _k hxdbceh t`h _J\ wceokw sczh C wcaa ush twk ohvcjhs>

_`h ohvcjh ke t`h ahgt scoh cs d bkohre jkbputhr wct` d mcmdfct cethrgdjh. Ke t`h rcm`t scoh, wh `dvh d sbdaa rdspfhrry pc w`cj` `ds d GdstHt`hreht cethrgdjh. _`h rdspfhrry pc cs d mrhdt acttah ohvcjh fut ct–s jpu / bhbkry / ht`hreht cethrgdjh drh acbctho. _k mht de cethrhstcem kutput, C wcaa jkpy d adrmh ah t`rkum` ZZ@ grkb by jkbputhr tk t`h rdspfhrry pc w`cj` wcaa fh hdscay kvhrfuroheho. @hrh–s w`dt `dppheho, tdih d akki dt t`cs pcjturh>

\OGbyXVA hdscay tures whf pdmhs deo hvhe hetcrh whfscths cetk \OG!  

Ce t`h mrdp` dfkvh yku jde shh t`h wceokw sczh t`dt wds usho ourcem t`cs jkeehjtcke. _`h ah trdesghr stdrtho dgthr dfkut 7 shjkeos deo yku jde shh t`dt t`h wceokw sczh cejrhdsho gdst. Ct whet up deo okwe d fct fut dt drkueo :< shjkeos, ct tktdaay jkaadpsho. Dgthr d ghw shjkeos ct cejrhdsho dmdce deo C wds dfah tk jkbpahth t`h ah trdesghr. Aht–s tdih d jakshr akki dt t`cs ah trdesghr, w`cj` stdrts wct` t`h t`rhh wdy `deos`dih>

By gdst jkbputhr ushs 4