redes de computadoresngarcia/old/rc1415/ubi-redes_de...redes de computadores (11558) ano lectivo...

Redes de Computadores (11558)

Ano Lectivo 2014/2015 * 1º Semestre !

Licenciatura em Engenharia Informática

!Aula 3 29/09/2014

!UNIVERSIDADE DA BEIRA INTERIOR Faculdade de Engenharia Departamento de Informática

!Nuno M. Garcia, [email protected]

1



Redes de Computadores

• Agenda

• A camada de ligação de dados ou como os dados são transmitidos na camada 2 dentro de uma trama

2




3

Porque é que precisamos de endereços? Quantos endereços é que um computador tem?

Só os computadores é que têm endereços de rede?




in Computer Networks, a Systems Approach, Petterson, Davie, Morgan Kauffman, 2003

Tipos de comunicação: Circuito Dedicado vs. Canal Partilhado

A B C Z

“B” envia os dados para o canal, identificando o receptor da mensagem

PARA: C 1000110010000101

4

R




5

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&'("%)"*+#$,&%)"-)./("-*"0-'-)"

',).,&.%)1

!

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'




6

Endereços na camada de rede e na camada de ligação de dados




• A camada de ligação de dados é responsável por transmitir dados sobre um canal físico. Cada computador pode ter um canal físico diferente, e esta camada permite fazer o isolamento entre as camadas superiores e o canal físico.

7




• Funcionalidades da camada de ligação de dados

• Endereçamento físico

• Isolamento da topologia de rede

• Notificação de erros (de colisão)

8




• Duas subcamadas:

• Link Layer Control (LLC)

• Esta camada faz a multiplexagem dos protocolos das camadas superiores, controla os erros (entre outras tarefas)

• Media Access Control (MAC)

• controla o acesso ao meio físico, implementando algoritmos de controlo/resolução de colisões (CSMA/CD, CSMA/CA)

9




10




• Endereços MAC especiais e reservados

• FF:FF:FF:FF:FF:FF

• 00:00:00:00:00

11




12

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%$&'()*+,

– /"')#+$%0"1+%,222

– 34#4%546')74-."%7+80'4%+%#)'").+%#"%9$4'%98%

:'90+%#"%"-#"'"*+$

– ;984%<=;>%74#4%4#40.4#+'%."8%?9"%."'%98%

"-#"'"*+%@=3%A-)7+"-#"'"*+%@=3%A-)7+

– 2B)$."8%!C3$ ?9"%4D9#48%4%7417914'%98%,E%

49.+8F.)7+%7+8%64$"%-+%"-#"'"*+%@=3%#4%

8F?9)-4%"%-4$%.46"14$%=!E%G$.4."1"$$ 4##'"$$

49.+7+-5):9'4.)+- HIJKLMNKOKOPHI>%5"QORRPHO S

!

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'




13

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%#&'(#$)*+$, )--.'// *'/0(1%203 +.0%040(

– /%012%.23"42%4+524%62'2%52#2%1780)-2

– 9"'1)."%80"%012%5+10-)52*:+%5')"%01%.'212%

".;"'-". 5+1%+%"-#"'"*+%<=>%80"%"$.7%2$$+5)2#+%

2+%"-#"'"*+%,9%#"%#"$.)-+

– >2#2%5+160.2#+'%5+-$.'?)%2%$02%.23"42%=!9%@"%2%– >2#2%5+160.2#+'%5+-$.'?)%2%$02%.23"42%=!9%@"%2%

.23"42%A%#)-B1)52C

– >+-.A1%+$%$"D0)-."$%#2#+$

,9%E <=>%E FFG%@-+'1241"-."%HI%1)-0.+$C

!

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'




14

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&'($')*+,($&-$

.,/,0(,-, ,$!1#2$3&45$

').'('65$)75$'8/9$),$8&,$

/,:';,$"<=

• !"#$>,?$&-$@'.+.5$"<=$

'-$:(5,.3,8/ +).+3,).5$

• 1$('3':'$5$@,35/'$"<=2$

('8@5).'$,$!"#$+).+3,).5$

5$8'&$').'('65$A"B

• "$>(,-'$')*+,.,$.'$1$

@,(,$"$C$')*+,.,$,@'),8$

@,(,$5$').'('65$A"B$.'$'-$:(5,.3,8/ +).+3,).5$

%&'$@('/').'$5$').D$.'$

!1#

• E&'-$/'-$5$').D$.'$!1#F$

G$').'('65$A"B$.'$

.'8/+)5$H$

IIJIIJIIJIIJIIJII

•

@,(,$5$').'('65$A"B$.'$

"$K&)+3,8/L

• !"#$0&,(.,$),$8&,$/,:';,$

"<=$,$35(('8@5).M)3+,$

N=JA"B$,/C$'8/,$@'(.'($

*,;+.,.'$K/+-'J5&/L

!

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

!"#$%"&"&' &'()*+'*,"-."

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'




15

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&'("%)"*+#$,&%)"-)./("-*"0-'-)"

',).,&.%)1

!

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'




16

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&'($)(*(%'(+( ,-+$-'.%&+$!"#$)&/*.0-$!1#$2345

• !"6$7*.8.9($":4$;('($-<*&'$-$&0)&'&=-$>"?$)&$!1#$&$;('($.//-$&+.*&$7+($*'(+($

,-+$)&/*.0-$($@@A@@A@@A@@A@@

• !"#$&0B.($($*'(+($;('($($'&)&

• :$'&,&<&$($*'(+($&$B(.$;&'%70*('$C$-7*'($'&)&$D7&$*&+$/&$($+ED7.0($!1#$/&$

&0,-0*'($(F$2B-8*($,-''&'$-$":4$0-$.0*&'G(,&$HIJH5

• :$'&,&<&$7+($'&/;-/*($)&$!1#$&$*'(0G&'& &//($.0G-'+(=K-$;('($-$.0*&'G(,&$LHIJH5

• !"#$;&0/($D7&$($+ED7.0($!1#$,-+$-$&0)&'&=-$MMMNMMMNMMMNMMM$,-''&/;-0)&$(-$

>"?$())'&// :$L&/*&

• O7(0)-$:$'&,&<&$7+($*'(+(P$)&/&+;(,-*(Q($&$'&&0,(+.0R($;('($-$.0*&'G(,&$H/*&S$

:$+(0*T+$*(0*(/$*(<&8(/$":4$D7(0*-/$.0*&'G(,&/$*.B&'N

O7(0)-$:$'&,&<&$7+($*'(+(P$)&/&+;(,-*(Q($&$'&&0,(+.0R($;('($-$.0*&'G(,&$H/*&S$

:$+(0*T+$*(0*(/$*(<&8(/$":4$D7(0*-/$.0*&'G(,&/$*.B&'N

!

U0.B&'/.)()&$)($1&.'($30*&'.-'

&'()*'+'+, +,-./0,/1'23'

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&'("%)"*+#$,&%)"-)./("-*"0-'-)"

',).,&.%)1

!

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'




17

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&$"'()*+,-.'/)012$3'/45)-/4()

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(

/."0#12&)34.*#"#5#)6*789:;<=;>?*8;+)'%@

<A%(%*%B*+2'

< /)C.'*5.)D#)#'*1&.''.'*7-E#5F>

< G&)"'B#''4.*%B*C)"()*(%*+)'%

< H-I*@;;*B%-&.'*J.&*'%1B%"-.

< 8;*KC#-L'




18

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&$"'()*+,-..'/)012$*'/3()-/33)

!!

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'

/."0#12&)34.*5.'-%&#.&*6789:;8:<=*7:+)'%>

;?%(%*%@*+2'

; /)A.'*B.)C#)#'*0#".'*6-D#"<

; E&)"'@#''4.*%@*A)"()*(%*+)'%

; F-G*>::*@%-&.'*5.&*'%1@%"-.

; 7:*HA#-I'




19

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&$"'()*+,'- ...'/)012$3''4/55)

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(

/."0#12&)34.*)5-2)6*789:;<*=:+)'%>

?><*>@#'-%( A)#&

? B%(%*%C*%'-&%6)

? A)&*-%6%0D"#5.*%"-&)"3)(.*7!>A;*E*7F>A;

? >&)"'C#''4.*%C*G)"()*(%*+)'%

? H-I*=::*C%-&.'*J.&*'%1C%"-.*)*=::*KG#-E'




20

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




21

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

• !"#$%&'()*'(+%,$"-("(."/(0')"1&*'

– &"/%0+-"12+3%42+%"1)$."%56-#$567)-8 "-.'"%+%

"/)$$+'%"%+ '"0"9.+':

– 42+%;)<("=3%+%'"0"9.+'%-2+%"-()6%>?@$ 6+%"/)$$+'%

96'6%(6=)#6'%A+B%)-(6=)#6'C%6$%.'6/6$%'"0"D)#6$

• !"#$%&'"()"(*+*,-*.*/ 0*//*('"*'/"0-'+'1'$'/"()"234)$"

/%0)-5'-"0'()"26'"1'2+)-"+'('/"'/"(*('/").5+5('/

• !"#$%&'"()"(*+*,-*.*/ 0*//*('"*'/"0-'+'1'$'/"()"234)$"

/%0)-5'-"0'()"26'"1'2+)-"+'('/"'/"(*('/").5+5('/

• 7"-)/0'2/*85$5(*()"()"1'.0$)+*-"'/"(*('/")."#*$+*"

1'.0)+)"*'"0-'+'1'$'"()"234)$"/%0)-5'-9"0'-")&).0$'"'"

:;<

• */"*0$51*=>)/"?1*.*(*/"/%0)-5'-)/@"5-6'"(*-"1'2+*"(*/"

#*$A*/

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(

Serviço não fiável e sem conexão




22

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&'($)*+,!-*.)/'01%21'

34 5)6768'67$%)%191:1)$)76'6#%6(6 7$)2;<1")%171)1)9$2='%>&)

?(6)'%6(64

@4 +1)$)6768'67$%)71'19'6)A?1)$)9626")1='B)"&<%1C)9$(1D6)6)

'%62=(&'&%C)=12E$)1=81%6)A?1)F&A?1)"&<%14

G4 +1)$)6768'67$%)9$2=1#?1)'%62=(&'&%)6)'%6(6)6'H)6$)F&()=1()

A?1)06I6)?(6)9$"&=E$C)6)'%62=(&==E$)H)?()=?91==$4

J4 +1)$)6768'67$%)71'19'6)?(6)9$"&=E$C)&2'1%%$(81)6)1(&==E$)1)J4 +1)$)6768'67$%)71'19'6)?(6)9$"&=E$C)&2'1%%$(81)6)1(&==E$)1)

12<&6)=&26")71)12#6%%6F6(12'$)KI6( =&#26" L JM):&'=N4

O4 .18$&=)76)&2'1%%?8DE$)$)6768'67$%)12'%6)2$)1='67$)71)

%1'&%676)1P8$2129&6")K1P8$212'&6" :69Q$FFN4

– !"#$%&'()" *+,('-+.#+#"/"01"/+2#3'*+,43#5)#6",+2#7#",3"1+2(")3$13#

$+#*+$85$1+#9:.;.<.=.<!

%;>.#3'032"#5)#13)0+#*+223'0+$/3$13#?#

12"$')(''-+#/3#7#@#A;<#B(1'#3#6+,1"#"+#0"''+#<C

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




23

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$

• %&'()'&*&+)$,-.$/0*-/$1)$23+.4$5$673'&0)8

– !"#$%&'()*+,-.$-/$(0$"#,/-)#%)12/-.$-30-435-6$"#%)&

– 7/-435/-8$%0'#$0-)30$"#)%-)-09:'0)-.'/#;"<')-$"#%$-"=/

– >)/-30-435-"+,-'/,&)-,/-/$(0$"#,/-)-"?1$&-.)/-<,&'/@$/

– A,.,/-,/-/$(0$"#,/-%$<$5$0-#,.)/-)/-B%)0$/-CD-)30$"#)-)-8%,5)5'&'.).$-.$-

<,&'/+,

– 7/-435/-"+,-8,.$0-'"#$%&'()%-EFG)/$A-H-EFFG)/$A

!"

I"'1$%/'.).$-.)-G$'%)-!"#$%',%

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$

• %&'()'&*&+)$,-.$/0*-/$1)$23+.4$5$673'&0)8

– !"#$%&'()*+,-.$-/$(0$"#,/-)#%)12/-.$-30-435-6$"#%)&

– 7/-435/-8$%0'#$0-)30$"#)%-)-09:'0)-.'/#;"<')-$"#%$-"=/

– >)/-30-435-"+,-'/,&)-,/-/$(0$"#,/-)-"?1$&-.)/-<,&'/@$/

– A,.,/-,/-/$(0$"#,/-%$<$5$0-#,.)/-)/-B%)0$/-CD-)30$"#)-)-8%,5)5'&'.).$-.$-

<,&'/+,

– 7/-435/-"+,-8,.$0-'"#$%&'()%-EFG)/$A-H-EFFG)/$A

!"

I"'1$%/'.).$-.)-G$'%)-!"#$%',%

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




24

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&

• '#()*(#$#+*,-./,0%$.0,1*,23+/4,5,64#7089*:

– !"#$%&'$(&(&')$#*'+$(,"$#&-(./+&"'&/

– .')$#*'+$($-(,"$#&-(-&0&)/*1$#&'/&()2#(3$-&('2(&'4&"&52(6!7(4&(4&-/*'28(

4*#*'9*'42(2(':1&0(4&()20*-;2(&#()$4$(-&<#&'/2

– =9$'42(&')$#*'+$(9#$(,"$#&(>$"$(9#(-&<#&'/28(9/*0*%$(2(>"2/2)202(

7?6!@7A(<$"$'/*"(2($)&--2

• '#()*(#$#+*,$;01()0;/1$/

– B-(+2-/- ';2(-&($>&")&3&#(4$(>"&-&'5$(42-(-C*/)+&-

– A*->2-*/*12(>09<D$'4D>0$E -&0,D0&$"'*'<– A*->2-*/*12(>09<D$'4D>0$E -&0,D0&$"'*'<

– B-(-C*/)+&- ';2(>"&)*-$#(4&(-&"()2',*<9"$42-

!"

F'*1&"-*4$4&(4$(G&*"$(H'/&"*2"

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&

• '#()*(#$#+*,-./,0%$.0,1*,23+/4,5,64#7089*:

– !"#$%&'$(&(&')$#*'+$(,"$#&-(./+&"'&/

– .')$#*'+$($-(,"$#&-(-&0&)/*1$#&'/&()2#(3$-&('2(&'4&"&52(6!7(4&(4&-/*'28(

4*#*'9*'42(2(':1&0(4&()20*-;2(&#()$4$(-&<#&'/2

– =9$'42(&')$#*'+$(9#$(,"$#&(>$"$(9#(-&<#&'/28(9/*0*%$(2(>"2/2)202(

7?6!@7A(<$"$'/*"(2($)&--2

• '#()*(#$#+*,$;01()0;/1$/

– B-(+2-/- ';2(-&($>&")&3&#(4$(>"&-&'5$(42-(-C*/)+&-

– A*->2-*/*12(>09<D$'4D>0$E -&0,D0&$"'*'<– A*->2-*/*12(>09<D$'4D>0$E -&0,D0&$"'*'<

– B-(-C*/)+&- ';2(>"&)*-$#(4&(-&"()2',*<9"$42-

!"

F'*1&"-*4$4&(4$(G&*"$(H'/&"*2"

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&

• '#()*(#$#+*,-./,0%$.0,1*,23+/4,5,64#7089*:

– !"#$%&'$(&(&')$#*'+$(,"$#&-(./+&"'&/

– .')$#*'+$($-(,"$#&-(-&0&)/*1$#&'/&()2#(3$-&('2(&'4&"&52(6!7(4&(4&-/*'28(

4*#*'9*'42(2(':1&0(4&()20*-;2(&#()$4$(-&<#&'/2

– =9$'42(&')$#*'+$(9#$(,"$#&(>$"$(9#(-&<#&'/28(9/*0*%$(2(>"2/2)202(

7?6!@7A(<$"$'/*"(2($)&--2

• '#()*(#$#+*,$;01()0;/1$/

– B-(+2-/- ';2(-&($>&")&3&#(4$(>"&-&'5$(42-(-C*/)+&-

– A*->2-*/*12(>09<D$'4D>0$E -&0,D0&$"'*'<– A*->2-*/*12(>09<D$'4D>0$E -&0,D0&$"'*'<

– B-(-C*/)+&- ';2(>"&)*-$#(4&(-&"()2',*<9"$42-

!"

F'*1&"-*4$4&(4$(G&*"$(H'/&"*2"

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




25

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&

• '#($)*+,-./'#($,)#0+1

– /"."'0)-1'%$"%201%3'10"%#"("%+2%-4+%$"'%

"-510)-61#1%71'1%20%#1#+%$"80"-.+

– 9)'.21:%;')(1." <1-$ =9;>$?

• 20%*-#0&*-,0$3./'3)"*)4#0+1

– /"."'0)-1'%71'1%@2"%$"80"-.+%#1%<A>%$"%#"("%

"-510)-61'%201%3'10"%=.1B":1$%A!;%"%01)$?

– &"0":61-."%1+%7'+B:"01%#"%"-510)-610"-.+%#"%

#1.18'101$ @2"%"C)$."%-+%-D(":%E%='"#"?

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(

Switch




26

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&

• '()(*+"#$%& ,(-$.,*/,(*+"#$%& $(012

• 312,2-$4*)(*+"#$%& $(0125*3-)26274 89':*;-$26<(%2:*

=#,2*!$(,>

• ?*+"#$%& ,2,46#@(*4+*2-)26274+*)4+*)#+>4+#$#A4+*B/2*

2+$C4*1#D()4+*(*%()(*/,(*)(+*+/(+*#-$26<(%2+

– !"#$%&'"(#')*#(+','*+-+./%#'#0*#1,2'%+'"(#'/$0+*)#-+3'&'– !"#$%&'"(#')*#(+','*+-+./%#'#0*#1,2'%+'"(#'/$0+*)#-+3'&'

24/0-5 (+(&*/6#'&'+$%+*+7&'%+'&*/8+('%+'-#%#')*#(+

– 9+8/20#'&'+:+(+$0&';<$%+*+7&'=>?3'@$0+*)#-+3'@$20#$0+'%+'

?5+8#%#A'$#'0#.+:#'%+'24/0-5/$8

– B2'+:+(+$0&2'2C&'+:/(/$#%&2'%#'0#.+:#'D"#$%&'$C&'2C&'

*+-+./%#2')*#(+2'%+$0*&'%+'"('%#%&'E+*F&%&';GGH'#0,'IJ'

(/$A

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




27

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&

• '()*+,-(.-/"#$%& 01%121-(.)-$0).)3

– /0.'1)%+%"-#"'"*+%234%#"%+')5"6%#1%.'161

– 7'+89'1%"$$"%"-#"'"*+%-1%.1:";1%#"%$<).8=)-5

• !"#"$%&$'()(#"!!"#"$*"("+&#$)#'),"-)!"#"$%&$'()(#"!!"#"$*"("+&#$)#'),"-)

• "$'.&– !"#"$

• !"$.&– %&'()*+)!",")-.-+-!/")%"+)-00-)-!1-&-2"3)!4)1-)'!/-&5(%-)

$"&)"!1-)")&-%-6-*3)-)")'!0/(!/-)1-)%7-8(1(

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




28

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&

• '()*+,-(.-/"#$%& 01%121-(.)-$0).)3

– !"#$%&'(')*+)$),('-./'+)'+)0#&*('+%'#$%1%'2$(34$%'

)00)')*+)$),('*%'#%5)6%'+)'07&#38&*9

• !"#"$%&$'()(#"!!"#"$*"("+&#$)#'),"-)

• "$'.&

– !"#$#%&'"()*+"#,#$#-"!-$#.$(#$&/"#*#'(*-*#+0"1$2– !"#$#%&'"()*+"#,#$#-"!-$#.$(#$&/"#*#'(*-*#+0"1$2

– "&'3$#

» /"!+*('*#*#'(*-*

– !"&3$#

» "&+*-%&0*#*#'(*-*#.*(*#$#%&'"()*+"#*!!$+%*/$

• !"$.&

– !"#!$%$&$&'"$($&!$"$&'#)#*&#*&+,'-".$/-*&-0/-!'#&#&)-&/1-%$)$

!!

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

"#$%&'%(#)'*+,#+-).*&(/'01% 23)*+45+6%&10%7+)8%&10%9,053:05$'




29

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&'( ')*+,$'-(

• !.+)/01+()2#(3+(#$#4+()5($+-'6/7268+-"/-29

– !"#$%&'()*+',"'+$+-"')*")./-%0)&%*%)1%234+.34)")

56%3*%&7)*")*3$38&3439

– :;+$<6%'()*+',"'+$+-"')*")./-%0)0+83=>")1%234+.34)")

56%3*%&7)*3)$&3439

• :()-+,$'-()0/7$;0)$/1'</()2')-+,$#7= ')

#03<'0'7$/0)/<=+-#$0+()2')-+,$#7=>

• :()("#$%&'( 0/7$;0)$/1'</()2')("#$%&#7=?)

#03<'0'7$/0)8#<$-+()')/<=+-#$0+()2')

/3-'72#@/='0>

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




30

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"

!"#$%&'#()(%*()*+%#&)*,"-%&#.&

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




31

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&'()%*%$+$,*-./*0.%/)#.,*+'0$%$"#$,

• !"#$%&'()*+,&-

– !"#$%&'()*+,"#(,-$.&,/01$&2,1(3(2,3$4(1()*(2,)+,)5/(-,452$6+,(7+#,-$.&89+:,'&2,

6+',+,'(2'+,%1+*+6+-+,)+,)5/(-,3(,1(3(,(7+#,*1&)2%+1*(:,%(1'$*$)3+,&,

61$&89+,#'&,1(3(,;+'+.<)(&=

– >+1'&-'()*(,6&3&,?1$3.(,*(',#'&,*&?(-&,3$)@'$6&,"#(,6+)*<',*+3+2,+2,

()3(1(8+2,3&,1(3(,"#(,2(,2$*#&,3(,6&3&,#',3+2,-&3+2,3&,1(3(:,2A,%(1'$*$)3+,&,

%&22&.(',3+2,()3(1(8+2,"#(,(2*9+,3(,6&3&,#',3+2,-&3+2=

– B,%+225/(-,&*1&/<2,3(,4$-*1+2,$'%(3$1,&,%&22&.(',3(,6(1*+2,*$%+2,3(,%&6+*(2=

– C6*#&,)+,)5/(-,-$.&89+,D)5/(-,3+$2EC6*#&,)+,)5/(-,-$.&89+,D)5/(-,3+$2E

• ./#,01

– !"#$%&'()*+,"#(,-$.&,/01$+2,2(.'()*+2,3&,#'&,1(3(,6+',&2,'(2'&2,

6&1&6*(152*$6&2,)+,)5/(-,3&,-$.&89+,D)5/(-,FE=

– C%()&2,%(1'$*(,&,%&22&.(',3&2,41&'(2,%&1&,+,2(.'()*+,+)3(,2(,2$*#&,+,

()3(1(8+,3(2*$)+=

– C6*#&,*&'?<',)+,)5/(-,-$.&89+=

• 1$%*/)',*+$#)&2$,*$/3

2##4355+.-6'7'8-',-.8-./56'7'5!"#$%"$#6.%7'"(9:$-2".&.(;9<)"+=..7

!"

G)$/(12$3&3(,3&,H($1&,I)*(1$+1

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




32

!"#"$%"%&"'()*+$%,-."'-". !"#$$%

!"#$%&'()*#)+,%)-$.*/#)#01$#)23456 789:;;)#)789:<:

!"

=0.>#$6.*%*#)*%)?#.$%)@01#$.($

&'()*'+'+, +,-./0,/1'23'

#$%&'(&)$*(+,-$,.*/+')0(12& 34*+,56,7&'21&8,*9&'21&:-164;16%(




33

CSMA/CD

in wikipedia.org




34

CSMA/CA

Hidden node

in wikipedia.org




35

Domínios de colisão e domínios de broadcast




36




• Na próxima semana, camada de rede.

!

• Questões?

37

redes de computadoresngarcia/old/rc1415/ubi-redes_de...redes de computadores (11558) ano lectivo...

Documents