GMPLS based
Digital Optical Networks
for Next-gen IP Backbone
Dr. Vijay Vusirikala
Director, Technical MarketingOutline
 Next-gen IP backbone - Drivers and characteristics
 Photonic Integrated Circuits and Digital Optical Networks
 Role of GMPLS in Digital Optical Networks
 GMPLS enabled applications in Digital Optical Networks
 SummaryInfinera Confidential and Proprietary | 21

Next-gen IP Backbone
Drivers and Characteristics

New Service Trends

New Transport Technologies• Converged XoIP (FMC, IMS)
• Video driven FTTH networks• 3G wireless services• Decentralized content sources• Reconfigurability (ROADM, WSS,
Digital Optical Networks)• Optical Control Plane (GMPLS, ASON)• Layer 1+ transport (PBT, T-MPLS)

DRIVERSENABLERS

Next-gen IP Backbone Characteristics• Dynamically reconfigurable IP capacity• Independence from transmission layer issues• Low end-end delay and jitter• Focus on scalability and operating cost efficiencies

Infinera Confidential and Proprietary | 3

Photonic Integrated Circuits
100Gb/s Receive
100 Gb/s Transmit

100Gb/s Transmit

5mm

Gb/s
Receive 100DirectBenefits

 Reduces size, power, cost and improves reliability
 Strategic Benefits
 Low-cost OEO conversion allows a digital network paradigm
Infinera Confidential and Proprietary | 42

Digital Optical Networks
 Digital Optical Networks combine DWDM, BandwidthManagement functionality and GMPLS intelligence

Digital Electronics& Software
Photonics

Photonics• Signal regeneration• PM & Error correction• Sub-λ add/drop• Protection• Grooming & switching Digital Optical Networks provide a scalable andreconfigurable IP bandwidth layer that conventional
DWDM systems cannot
 End-end GMPLS and sub-λ granularity at each siteenable new applications

Infinera Confidential and Proprietary | 5Digital Optical Networks - Applications
Digital Optical Networks - Applications

 Switched Layer-1 VPNs
 Dynamically Reconfigurable IP Bandwidth Digital Protection and Restoration
 Layer-1 Multicast
 Super Lambda Services - 100 Gb Ethernet

O-E-O

O-E-O
O-E-O
O-E-O

Conventional DWDM Systems - Limitations

O

O O O

O-E-O
O-E-O
O-E-O

O
O
O

O-E-O

O
O

OXC
O O O

OOO

O-E-O
O-E-O
O-E-O

O

O-E-O

 Needs separate OXC for switching No end-end GMPLS
 No auto-provisioning across DWDM and OXC
 No dynamic reconfiguration of IP bandwidth GMPLS intelligence limited to OXCInfinera Confidential and Proprietary | 63

GMPLS in Digital Optical Networks

UNI signaling for IP-opticalinter-networking

GMPLS restoration withsub-λ circuit granularity

UNI

Fiber
Fiber
cut

Cut

GMPLS auto-discovery ofcircuit & physical topology

GMPLS-enabled end-end
auto-provisioning
between all nodes

Infinera Confidential and Proprietary | 7

Dynamically Reconfigurable IP BandwidthOp
tic
Re al LS
que P
stRouter CACBD

Router A
IP VirtualNetworkTopology

Router B
GMPLS
UNI

Router D
Dynamically allocatable IP capacity
Baseline IP layer connectivity

ABCD

 Digital Optical Networks enable dynamic reconfigurability of IP layer
topology PRBS on all non-service bearing DWDM channels Æ 100G provisionablecapacity service ready On-demand express routes between routers for dynamic IP load balancing
 GMPLS UNI facilitates dynamic bandwidth-on-demand Enables multiple circuits to time-share same bandwidth
Infinera Confidential and Proprietary | 84

Digital Protection and Restoration Schemes

 Digital protection & self-healing restoration of transparent waveservices

 Based on precise electrical triggers (Digital Wrapper OH, FEC OH) Multiple options for trade-off between bandwidth efficiency and QoS
requirements

 Dedicated (Digital SNCP) and shared (Digital MS-SPRING) protection
 GMPLS based path level dynamic restoration
Infinera Confidential and Proprietary | 9

Switched Layer-1 VPNs
Site C
Site C

Site D

Site D70G port

30G

30G

70G port

50G
20G

10G

20G

60G port
40G
Site B
Site A

Core Network
Backbone

10G40G

Site A

50G

100G port

Site B

CustomerView

 Switched L1 VPN enables end-customer to dynamically manage capacity atsub-wavelength granularity

 Pre-provisioned capacity between on-net sites creates virtual switched WDM network

 Customer Network Management GMPLS optical UNI signaling Customer-initiated provisioning and secure accessInfinera Confidential and Proprietary | 105

Super-λ Next-gen Ethernet Services
 PIC enabled Digital Optical Networks provide scalable DWDM line capacity
to accommodate higher speed services (40G,100G)
 As IP Link sizes exceed optical line rate, IP core requires “Super-λ” services

100GLayer 1/0
DWDM

Layer 3/2
RouterPhotonic
IntegratedCircuit

G.709 &other logic

100G Serdes

100GbE SR

100GbE SR

100GbE MAC

Packet Proc.

<100G>

Fiber

Infinera Confidential and Proprietary | 11

Layer-1 Multicast
VSO
VHO

Conventional DWDM Systems
2xGbE
2xGbE

VSO

VHO

λs to different destinations

 Inefficient for video distribution

2xG
bE

VSO

 No native multicast capability
 Same copy transmitted on multiple

VSO

2xGbE

VSO
2xGbE

2xGbE

VSO

Digital Optical Networks

 Native Layer-1 multicast capability
 Optimal for video distribution
 Scalable and bandwidth-efficient

VSO

Infinera Confidential and Proprietary | 126

Future Direction and Open Areas 100 GbE standardization
 Multi-layer MPLS/GMPLS operations
 Multi-vendor GMPLS operations
 Extension to new packet oriented metro transporttechnologies

Infinera Confidential and Proprietary | 13Conclusion Next-gen IP backbone needs a dynamically reconfigurable opticallayer with sophisticated protection and bandwidth management
capabilities

 Digital Optical Networks combine highly scalable DWDM networks
with integrated Bandwidth Management and end-end GMPLS
intelligence Digital Optical Networks enable applications that conventional DWDM
systems cannot

 L1 multicast, GMPLS restoration, Switched L1 VPNs and 100G Ethernet
Super-λ services.

Infinera Confidential and Proprietary | 147