Thd Ct3 19juin2009 Kc
Transcript of Thd Ct3 19juin2009 Kc
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Les réseaux optiques
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Plan
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Plan
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Une évolution attendue
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Une évolution nécessaire
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La magie de WDM
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Détail WDM
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Plan
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Réseau optique: les composants
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3-db Coupleur
λ1
λ2
λ1+λ2
λ1+λ2
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OXC
OXCFO : WDMλ1λ2
Logique de contrôle
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OXC (suite)
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Plan
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Un réseau optique maillé
OXC A
OXC B
OXC C
OXC D
OXC E
OXC F
Lightpath!!!!1
Lightpath = canal de bout en bout (généralement avec le même lambda)(remarque: nous sommes ici en mode commutation de circuit)
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Routage et affectation de lambda
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RWA: un autre regard
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Trafic Grooming
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Plan
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Nécessité de protection
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Disponibilité
99%99.9%99.99%99.999%Availability
BRONZESILVERGOLDPREMIUM
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Protection
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Un exemple 2:1
B
S D
X
C
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Plan
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ITU G.709: Digital Wrapper: interface pour le OTN (optical Transport Network)
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G.709: Format
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Plan
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Superposition (Overlay) des infrastructures
L3=IP L2=ATM/EthernetL1=optique
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OXC
IP routerTx RxAccess Station
Wavelength Router
WDM link
UNI
Local Add Local Drop
Vers les réseaux optiquesintelligents
GMPLS Plane
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ASON
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Architecture sur 3 plans
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ASON/GMPLS : Architecture en 3 plans
Control Plane
Data Plane
UNIUNI
Management Plane
Plan de Contrôle
Plan des données
UNIUNI
Plan de gestion
Interaction plan de gestion/ Plan de contrôle ONE=Optical Network Element
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GMPLS
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Les liaisons physique
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La hiérarchie
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La hiérarchieGaine
physique Fibre(FSC)
Lambdas
(LSC)
TDM
MPLS
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GMPLS: composants
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RSVP-TE
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OSPF-TE
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Plan
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OPS
paquet reçu
Extraction/Analyse de l’en-tête
Paquet émis
FDL
FDL
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Résolution de conflit à la sortie
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OBS
setup burst
offset
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OBS (suite)
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Merci
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GMPLS: Functional Blocks
AB
C