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RESILIENT PACKET RINGTECHNOLOGY
ByAshwini K. Dhatrak
Department of Computer EngineeringMatoshri College of
Engineering, Nashik
2010-2011
SEMIN! "N#
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Intro$u%tion
S"NE& ' E&(E!NE&
!)! operation
!)! MC MC frame format
!)! *ith S"NE& ' Ethernet
&e%hni%al aspe%t of !)!
$+antages ' eatures
ppli%ations
Con%lusion
OVERVIEW
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INTRODUCTIONTRANSPORT NETWORKS
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SON
ET1.I!ED TYPE".#ESH TYPE
Ea%h %ir%uit is allo%ate$ a fie$
amount of .an$*i$th that is
*aste$ *hen not use$/
&hat fie$ allo%ation puts a limit
on the maimum .urst traffi%
$ata transfer rate .et*een
en$points
I!ED TYPE
It reuires many %ir%uit
implementations
#ESH TYPE
)ro+isioning the %ir%uits
ne%essary to %reate a logi%al
mesh o+er a S"NE& ring is not only
$iffi%ult .ut also results in etremely ineffi%ient use of
ring .an$*i$th/
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igE
igE
igE
Ethernet o+er !ing &opology
ogi%al Diagram
B
C
D
THERNET
Ethernet $oes make effi%ient use of
a+aila.le .an$*i$th for $ata traffi%
offer a far simpler an$ inepensi+e
solution for $ata traffi%
Ethernet generally relies on thespanning tree proto%ol to
eliminate all
loops from a s*it%he$ net*ork
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R$si%i$nt Pa&k$t Rin' ( E)$r'in' #$tr*
N$tw*rk Ar&hit$&t+r$
PACKET RING
DATA PACKET
Resilient Packet Ring (RPR)
technolog !as "esigne" to
co#$ine SONET%s carrier&class
'unctionalities !ith Ethernet%s
high $an"!i"th utiliation an"
granularit
RPR technolog uses a "ual
counter rotating 'i$er ringtopolog *oth rings (inner an"
outer) are use" to transport
!orking tra''ic $et!een no"es
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RPR MAC
The RPR MAC is
responsi$le 'or
pro+i"ing access to the
'i$er #e"ia The RPRMAC can recei+e,
transit, an" trans#it
packets
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#AC RA#E OR#AT
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PR VS SONETR$si%i$nt Pa&k$t Rin' SONET
"C&ES I3ED B4 &" D&
!E!DESS " I&S SI5E
64S&E " BND 4ID&(7
"C&ES &(E B4 &" D&
!E!DESS " I&S SI5E
64("E 8SE " BND 4ID&(7C"NSIS&S " D8
IBE!S
C"NSIS&S " IN9ED
CI!C8I&!:
SENDS D8)IC&E C"): "
D& &" EC( DES&IN&I"N
64S&E " B47
8SES B"&(
IBE!S "!
D& &!NSMISS"IN
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R$si%i$nt Pa&k$t Rin' ETHERNET
EC( D& IS MDE &" )SS &(!"8
&(E ;8E "! SC(ED8EDD& IS )SSED "!4!D &(!"8(
I&S )!I"!I&: S&&8S
PR VS ETHERNET
&(IS DE:S &(E &!NE! " D&S& &!NE! "
D& IS C(EI
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Resilienc
*an"!i"th 'airness
*roa"cast or Multicast tra''ic
Phsical -aer .ersatilit)oint-to-point an$ multipoint
ser+i%es/
V NT GES
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pplicationP MAN Applications
-AN Application
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conclusion
conclusionThe #ain o$0ecti+e o' Resilient Packet Ring technolog
isto ena$le a true alternati+e to SONET transport 'or packet
net!orks, pro+i"ing carriers !ith resilienc, 'ast
protection an" restoration, an" per'or#ance #onitoring
co#para$le to those o' SONET net!orks
RPR pro+i"e a relia$le, e''icient, an" ser+ice&a!are
transport 'or $oth enterprise an" ser+ice&pro+i"er
net!orks Co#$ining the $est 'eatures o' legac
SONET/S12 an" Ethernet into one laer, RPR #a3i#iespro'ita$ilit
!hile "eli+ering carrier&class ser+ice RPR
!ill ena$le the con+ergence o' +oice, +i"eo, an" "ata
ser+ices transport
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Thank ,*+ --
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+$sti*ns /%$as$
