Advanced Networking & Internet Technologies_PMIT_6103_Power Point Slides Lecture 8
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Transcript of Advanced Networking & Internet Technologies_PMIT_6103_Power Point Slides Lecture 8
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8/9/2019 Advanced Networking & Internet Technologies_PMIT_6103_Power Point Slides Lecture 8
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PMIT - 6103
Advanced Networking & Internet Technologies
By Zamshed Iqbal Chowdhury
Lecturer, IIT, JU
Lecture 081
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Topics
ac!et "cheduli#$ %or &o"ma#a$eme#t
'e%ere#ce Boo!( )i$h "peed Computer *etwor!s by
+illiam "talli#$s
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-ulti.ser/ice #etwor!
"i#$le #etwor! i#%rastructure carryi#$trac %rom diere#t ser/ices 2data, /oice,/ideo3334 i# a# i#te$rated way
5iere#t quality o% ser/ice requireme#ts tobe met
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er%orma#ce Bou#ds
5etermi#istic holdi#$ %or e/ery pac!et se#t o# a co##ectio#
"tatistical robability that a pac!et /iolates the bou#d is less tha#
a speci7ed /alue
o#e.i#.* bou#d, #o more tha# o#e pac!et i# *co#secuti/e pac!ets /iolates the bou#d
Commo# per%orma#ce bou#ds
mi#imum ba#dwidth maimum loss
maimum delay
maimum delay 9itter
:
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The role o% the #etwor!
The #etwor! should ha/e e#ou$h resourcesa/ailable to be able to satis%y the per%orma#cebou#ds required by the applicatio#
admissio# co#trol co#$estio# co#trol
The #etwor! should ecie#tly ma#a$e theresources a/ailable i# order to $uara#tee a
quality o% ser/ice acceptable to theapplicatio# pac!et scheduli#$ at i#termediate #odes
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ac!et scheduli#$
ac!ets are queued at i#termediate #odes store a#d %orward
The ser/er o# each queue must decide which pac!et to ser/ice #et
ma#a$e the queue o% bac!lo$$ed pac!ets The ser/er uses a scheduli#$ discipli#e to
%airly share the resources
pro/ide per%orma#ce $uara#tees
Trade.o betwee# trac isolatio#
circuit switchi#$( $uara#teed dedicated resources
resource shari#$ pac!et switchi#$( complete resource shari#$