Packet Optical Transmission

© 2009 Verizon. All Rights Reserved. PTEXXXXX XX/09

Thomas Sims

Transmission Design Engineering Verizon Business

March 30th ₂₀₁₀

Packet Optical Transmission

Examining Verizon’s Transition to a Packet

Optical Infrastructure

2

Agenda: Verizon Packet Optical Transmission

• Verizon’s Global Capability - 1 slide

Introduction to Verizon’s network reach and capability

• Carrier Networks & Convergence - 2 slides Typical Carrier network & Convergence of layers

• Signal and Protocol Mapping - 2 slides Analysing the protocols in the network

• Packet Optical Transmission - 3 slides Summary of Packet Optical Transmission

• Automation and Core Router design – 2 slides Some drivers & application of POTP

• P-OTP Deployment Strategy – 2 slides Target implementation of system and network

• Conclusion – 2 slides Conclusions & 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 Network

Most Connected Global IP Network

150+ Countries

2,700+ Cities 33,000 Employees

Carrier Network Architecture - Multi Vendor/Service

Network

LH LH LH LH Long Haul GbE SDH IP/MPLS SDH FC/GbE L2 Ethernet Long Haul WDM WDM STM-n SDI Stacked ADMs Back-to-backADMs

Inefficient ring-based protection and grooming, with limited survivability

Back-to-back muxponders. No end-to-end service-level performance monitoring Manual grooming Partially filled, service-specific and destination-specific wavelengths

Costly and resource inefficient 1+1 protection; limited survivability MSPP PDH 10/100

Separate nodes for SONET/SDH and virtual

wavelength services Separate set of

wavelengths for each service type from each end office

Separate nodes for SONET/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 to displace SDH over time

Source: Infonetics Research

2010 2011 2012+

Metro Service Mapping

Low Speed/Legacy E1 E3 STM-1 STM-4 STM-16 STM-64 OTU0 OTU1 OTU2 OTU3 10M 100M 1G 10G 100G ESCON FICON 2G FICON 1G FICON 4G FICON 2G 1G FC 2G FC 4G FC 8G FC SD-SDI, ASI HD-SDI 3G-SDI

Rate

10 GE 40 GE Eth FE GE SAN Applications Enterprise/Business Video protocols Backbone TDM Transport

Signal Mapping – SDH, OTN, MPLS-TP?

E1 E3 STM-1 STM-4 STM-16 STM-64 STM-256 OTU0 OTU1 OTU2 OTU3 OTU4 10M 100M 1G 10G 100G ESCON FICON 2G FICON 1G FICON 4G FICON 2G 1G FC 2G FC 4G FC 8G FC SD-SDI, ASI HD-SDI 3G-SDI

Rate

Eth FE GE 10 GE

MPLS-TP

OTN

MPLS-TP or OTN?

40 GE

SDH

Protocol Transport Driver

Wavelength Services Packet Services TDM Services

ODU-1, ODU-2, ODU-3, ODU-4 E-1

• Packet services are growing rapidly and will no doubt dominate future traffic demands

• Wavelength services are growing as well and OTN is the only viable method available for core transport • Growth in TDM services may be

slowing, but demand is still strong • Protocol conversion is not as

efficient as native transport and switching 100G 10G 1G 100M 10M 64K E3 STM-n

Technology Evolution

WDM

VC-4 & ODU-n Switching

Packet

Ethernet & MPLS Switching GFP & VCAT

P-OTP

Wavelength Switching

TDM-on-a-Wavelength Packet OverWavelength

TDM

Triple Play of Transmission Technology

Triple Play of Transmission Technology

Packet- Optical

Transport 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 Hybrid Fabric VCAT Packet Packet

Transport Network Automation

OTN Control Plane

City A National Network City B

• Enables new services such as Bandwidth on Demand, client self service, etc. • Reduces back office system development for the carrier

Core Router Connectivity

Router Router

P-OTP Architecture: Core Router Connectivity via Transport MPLS Current Architecture:

Core Router Direct Connectivity

• Physical mesh connectivity is desired to reduce transit traffic

• Router port and transport utilization is limited due to granularity

• Reconfiguration flexibility is limited due to granularity, speed, and control plane interoperability

Transit Traffic Router Connectivity

• Fewer router ports required to achieve full mesh connectivity • Packet level granularity provides

maximum utilization

• Higher speed ports between layers w/o channelization provides maximum 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 Packet Switching 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 for transponder and regeneration applications

Packet Packet 100GbE 2x40G WSS ROADMWSS ROADM Support 8+ DWDM degrees with 80+ wavelengths each employing colorless and

directionless ROADMs

2x40GbE 10x10GbE

Separate OTN and packet modules Module types with both client and DWDM optics connected to the hybrid fabric Packet processing is provided in I/O modules 10x10G 2x40G OTN Switching 10x10G Multi-Terabit Hybrid Fabric 100G λ OTN OTN 100G λ 100G λ

Summary Target Network Architecture

Core Ethernet SDH OTN Port types Broadband Web, IMS VoIP IP-VPN FR/ATM POTS, BRI/PRI T1/E1, T3/E3 GbE/10GbE ASI, SD/HD-SDI FC/Ficon, Escon STM/OTU-n Services IP FR/ATM Ethernet MPLS PDH SDH OTN Se rv ic e M a p p ing Ethernet VPN Se rv ic e H a nd li ng Bandwidth management Access Edge Metro

Packet Optical Transport Reliable, flexible bandwidth mgmt (Ethernet, MPLS, SDH,

OTN)

Optical and Ethernet service mgmt

OTN / λ OTN / λ

P-OTP P-OTP

P-OTP P-OTP

Conclusion

•

Service mapping

and

protocol requirements

are becoming more

varied and complicated

•

Transmission systems should support:

–Packet services natively

–Optical Wavelength services

–SDH services

Verizon’s strategy is to deploy a

Packet

Optical Transmission Platform

that supports

all Services on one system.