packet optical transmission xx/09 thomas sims transmission design engineering verizon business march...
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© 2009 Verizon. All Rights Reserved. PTEXXXXX XX/09
Thomas SimsTransmission Design EngineeringVerizon BusinessMarch 30th 2010
Packet Optical TransmissionExamining Verizon’s Transition to a PacketOptical Infrastructure
2
Agenda: Verizon Packet Optical Transmission
• Verizon’s Global Capability - 1 slideIntroduction to Verizon’s network reach and capability
•Carrier Networks & Convergence - 2 slidesTypical Carrier network & Convergence of layers
• Signal and Protocol Mapping - 2 slidesAnalysing the protocols in the network
• Packet Optical Transmission - 3 slidesSummary of Packet Optical Transmission
• Automation and Core Router design – 2 slidesSome drivers & application of POTP
• P-OTP Deployment Strategy – 2 slidesTarget implementation of system and network
•Conclusion – 2 slidesConclusions & Questions
Verizon’s Global Network Capabilities & Operations
• 750K+ Fibre Route Kilometres & 80+ Submarine Cable Systems• 40,000+ miles of ULH network in U.S./Asia/Europe• 200+ Data Centres,• 10,000+ On-net buildings globally• 5 Major Global Network Operating Centres• 4,000+ Managed Customer Networks
Most Connected Global IP NetworkMost Connected Global IP Network
150+ Countries2,700+ Cities33,000 Employees
Carrier Network Architecture - Multi Vendor/ServiceNetwork
LH
LH
LH
LH
LongHaul
GbE
SDH
IP/MPLS
SDH
FC/GbE
L2 Ethernet
Long Haul WDM
WDM
STM-n
SDI
StackedADMs
Back-to-backADMs
Inefficient ring-basedprotection and grooming,with limited survivability
Back-to-backmuxponders. No
end-to-end service-level performance
monitoring
Manualgrooming
Partially filled,service-specific anddestination-specific
wavelengths
Costly and resourceinefficient 1+1
protection; limitedsurvivability
MSPPPDH
10/100
Separate nodes forSONET/SDH and virtual
wavelength servicesSeparate set ofwavelengths foreach service type
from each end office
Separate nodes forSONET/SDH and virtual
wavelength services
Metro
Network Convergence
IP
Ethernet(ATM/FR)
SDH
DWDM
• IP-MPLS-Ethernet for applications– Data Services
• Ethernet for packet transport– Efficient packet transport– Low cost interfaces
• Packet Optical Transport– Fused Ethernet-WDM-ROADM– Connection-oriented Ethernet transport
tunnels
• Fewer layers, Ethernet begins todisplace SDH over time
Source: Infonetics Research2010 2011 2012+
Metro Service Mapping
Low Speed/Legacy
E1
E3
STM-1
STM-4
STM-16
STM-64
OTU0OTU1
OTU2
OTU3
10M
100M
1G
10G
100G
ESCON
FICON 2GFICON 1G
FICON 4GFICON 2G
1G FC2G FC4G FC8G FC
SD-SDI, ASI
HD-SDI3G-SDI
Rate
10 GE40 GE
Eth
FE
GE
SAN ApplicationsEnterprise/Business
Video protocolsBackboneTDM Transport
Signal Mapping – SDH, OTN, MPLS-TP?
E1
E3
STM-1
STM-4
STM-16
STM-64
STM-256
OTU0OTU1
OTU2
OTU3OTU4
10M
100M
1G
10G
100G
ESCON
FICON 2GFICON 1G
FICON 4GFICON 2G
1G FC2G FC4G FC8G FC
SD-SDI, ASI
HD-SDI3G-SDI
Rate
Eth
FE
GE
10 GE
MPLS-TP
OTN MPLS-TP or OTN?
40 GE
SDH
Protocol Transport Driver
WavelengthServices
PacketServices
TDMServices
ODU-1, ODU-2, ODU-3, ODU-4E-1
• Packet services are growing rapidlyand will no doubt dominate futuretraffic demands
•Wavelength services are growingas well and OTN is the only viablemethod available for core transport
•Growth in TDM services may beslowing, but demand is still strong
• Protocol conversion is not asefficient as native transport andswitching
100G
10G
1G
100M
10M
64K
E3STM-n
Technology Evolution
WDM
VC-4 & ODU-nSwitching
Packet
Ethernet & MPLSSwitching
GFP & VCAT
P-OTP
WavelengthSwitching
TDM-on-a-Wavelength
Packet OverWavelength
TDM
Triple Play of Transmission TechnologyTriple Play of Transmission Technology
Packet- OpticalTransport Platform
Packet Optical Transmission Platform
P-OTP
WDM
NG-ADM plus DWDM
I/O I/O…
WSS ROADM
OTP
I/O I/O
WSS ROADM
NG-ADM
NG-ADM
NG-ADM
NG-ADM+
NG-ADM+
NG-ADM+
NG-ADM+
NG-ADM+
NG-ADM+
NG-ADM+
NG-ADM+
• Evolutionary path from discrete network elements to a fully integrated platform• Wavelength Selectable Switch (WSS) provides multi-degree optical switching• Hybrid electrical switch fabric provides both TDM and Packet aggregation
TDM
TDM
Packet
TDM
Packet
PoS
TDM
HybridFabric
VCAT
PacketPacket
Transport Network Automation
OTN Control Plane
City A City BNational Network
• Enables new services such as Bandwidth on Demand, client self service, etc.•Reduces back office system development for the carrier•Network becomes the database of record
Core Router Connectivity
Router Router
P-OTP Architecture: Core RouterConnectivity via Transport MPLS
Current Architecture:Core Router Direct Connectivity
• Physical mesh connectivity is desired toreduce transit traffic•Router port and transport utilization islimited due to granularity•Reconfiguration flexibility is limited dueto granularity, speed, and control planeinteroperability
TransitTraffic
RouterConnectivity
• Fewer router ports required toachieve full mesh connectivity• Packet level granularity providesmaximum utilization•Higher speed ports between layersw/o channelization providesmaximum flexibility
P-OTP Target Architecture
2x40G λ
100GbE λ
2x40GbE λ
100GbE λ
100G λ
2x40G λ
Client I/O
WSS ROADM
OTN
OTN
Packet
OTN
Packet
OTN
PacketSwitching
Inter-worki
ng
Packet
WSS ROADMWSS
ROADMWSS ROADMWSS
ROADMWSS ROADM
DWDM I/O
100G λ
OTN
OTN
OTN
Packet
OTN
OTN
Option for wavelengths to bypass fabric fortransponder and regeneration applications
Packet
Packet
100GbE
2x40G
WSS ROADMWSS
ROADM
Support 8+ DWDM degreeswith 80+ wavelengths eachemploying colorless anddirectionless ROADMs
2x40GbE
10x10GbE
Separate OTN and packet modules
Module types with both client andDWDM optics connected to thehybrid fabric
Packet processing is provided inI/O modules
10x10G
2x40G
OTN Switching
10x10G
Multi-TerabitHybrid Fabric
100G λOTNOTN
100G λ
100G λ
Summary Target Network Architecture
Core
Ethernet
SDH
OTN
Porttypes
BroadbandWeb, IMSVoIPIP-VPNFR/ATM
POTS, BRI/PRIT1/E1, T3/E3
GbE/10GbEASI, SD/HD-SDIFC/Ficon, EsconSTM/OTU-n
Services
IPFR/ATMEthernet
MPLS
PDHSDH
OTN
Serv
ice M
ap
pin
g
Ethernet VPN
Serv
ice H
an
dli
ng
Bandwidthmanagement
AccessEdge
Metro
Packet Optical Transport
Reliable, flexiblebandwidth mgmt
(Ethernet, MPLS, SDH,OTN)
Optical and Ethernet service mgmt
OTN / λ OTN / λ
P-OTP
P-OTPP-OTP P-OTP
Conclusion
•Service mapping and protocol requirements are becoming morevaried and complicated•Transmission systems should support:
–Packet services natively–Optical Wavelength services–SDH services
Verizon’s strategy is to deploy a PacketOptical Transmission Platform that supportsall Services on one system.
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