infocom03 rajiv

1© 2001, Cisco Systems, Inc. All rights reserved.

Session NumberPresentation_ID

The Future of Optical Networking

Rajiv Ramaswami

[email protected]

Acknowledgement: Ori Gerstel

222© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID

Optical Market Forecast (WW in $M)

0

5000

10000

15000

20000

25000

30000

35000

1999 2000 2001 2002 2003 2004 2005 2006

DWDM-LH DWDM-Metro SONET SDH DCS OCS

• Post bubble growth is modest

• Capex driven by revenue; metro emphasis

• Bulk of spending still in SONET/SDH, not WDM

• Industry consolidation


Technology Adoption in the Network

2000 2001 2002 2003 2004 2005 … Never?

MSPP: Multi-service provisioning platformsTDM and packet services over SONET

MSSP: Multi-service switching platformsSTS-level optical (electrical) cross connectNode consolidation, mesh networking

MSTP: Multi-service transport platformsOptimize multiservice TDM, stat mux + DWDM

Dynamic optical networksTime-of-day & BOD connections

Packet switching / Burst switching


MSPP – MSSP – MSTP: how do they fit in?

Metro/Regional HubEdge Switching/RoutingMulti-band Cross-connect

Customer Aggregation Point, POP or Co-Lo

Intra-Metro/RegionalTransport Fabric

Access/CollectorTransport Fabric



CPEService Rings

Inter Office Metro/Regional200+km, 10Gb, Multiservice

CO/POP Access Collector50-80 km, 2.5 Gb & 10 Gb, Multiservice

CPE Service Rings10-20 km, Service Aggregation

MSPP

Multiservice Provisioning Platform

DS-1 to OC-192 TDM

10/100Mb and GbE

Integrated ITU optics

Access MSPP

DS-1 to OC-48 TDM

10/100Mb and GbE

MSPP

Multiservice Provisioning Platform

DS-1 to OC-192 TDM

10/100Mb and GbE

Integrated ITU optics

Access MSPP

DS-1 to OC-48 TDM

10/100Mb and GbE


MSSP

Multiservice Switching Platform

320 Gb/s to Multi Tb/s

DS3 to OC-192 TDM

Non-blocking VC-4 / STS-1 Cross-connect Matrix

ITU Optics

1Gb/s & 10Gb/s Ethernet

MSSP

Multiservice Switching Platform

320 Gb/s to Multi Tb/s

DS3 to OC-192 TDM


ITU Optics

1Gb/s & 10Gb/s Ethernet



Metro/Regional HubEdge Switching/RoutingMulti-band Cross-connect

Customer Aggregation Point, POP or Co-Lo

Intra-Metro/RegionalTransport Fabric




CPEService Rings

Inter Office Metro/Regional200+km, 10Gb, Multiservice

CO/POP Access Collector50-80 km, 2.5 Gb & 10 Gb, Multiservice

CPE Service Rings10-20 km, Service Aggregation

ONS 15454 MSPP

Multiservice Platform

Support for E1/DS-1 to STM-64/OC-192, as well as 10/100Mb and GbE in a single chassis

Integrated ITU optics with 32, 100Ghz wavelengths

NEBS3 & OSMINE certified

ONS 15454 MSPP

Multiservice Platform

Support for E1/DS-1 to STM-64/OC-192, as well as 10/100Mb and GbE in a single chassis

Integrated ITU optics with 32, 100Ghz wavelengths

NEBS3 & OSMINE certified

ONS 15600 MSSP

Multiservice Switching

128, 2.5G or 32, 10G SDH/SONET in a single chassis


Scalable to 2048, 2.5G System

ITU Optics

1Gb & 10Gb Ethernet

ONS 15600 MSSP

Multiservice Switching

128, 2.5G or 32, 10G SDH/SONET in a single chassis


Scalable to 2048, 2.5G System

ITU Optics

1Gb & 10Gb Ethernet

MSTP

DWDM with MSPP software intelligence

Access through regional reach (100s of km)

Flexible OADMs

Robust, carrier-class DWDM

λ Services

10GigE, GigE, ESCON, Fiber Channel, SDH/SONET 150M to 10G

MSTP

DWDM with MSPP software intelligence

Access through regional reach (100s of km)

Flexible OADMs

Robust, carrier-class DWDM

λ Services

10GigE, GigE, ESCON, Fiber Channel, SDH/SONET 150M to 10G



Data-Optimized SONET/SDH

• SONET/SDH will need to become more efficient

• GFP, CCAT, VCAT, and LCAS all offer incremental improvements

Advanced Services• Deploying advanced services is

key to profitability• Ethernet, Video, VoIP, and SAN

Interconnect key service needs

QoS Engine

• QoS is necessary for advanced services and providing SLAs

• Cisco IOS provides advanced per-packet, per port QoS

Packet Multiplexing to the Transport Layer

• Packet Multiplexing is crucial for network efficiency and scale

• Cisco technology innovations (MPLS, RPR, EoS) enable this

Innovations for Multiservice over SONET/SDH Service Delivery


Data Transport Evolution

Enterprise A

Enterprise A

SONET/SDH Ring

Enterprise C Enterprise C

Enterprise B

Enterprise B

Enterprise C

Internet,IXC LH handoff and/or

ILEC Regional Net

Internet Access: : point-to-point connection, customer site to POP

Ethernet Private Line: point-to-point “pipe” interconnecting end customer sites (line rate or bandwidth scaled)

Transparent LAN ServiceTransparent LAN Service: : LAN extension between several sites

SONET/SDH Ring

SONET/SDH Ring


Data Transport Evolution

Enterprise A

Enterprise A

SONET/SDH Ring

Enterprise C Enterprise C

Enterprise B

Enterprise B

Enterprise C

Internet,IXC LH handoff and/or

ILEC Regional Net

SONET/SDH Ring

SONET/SDH RingEthernet and IP switching and QoSIntegrated Ethernet switching and IP routingVLAN support (802.1Q and QinQ)Diff-serv QoS implementation

Efficient Ethernet transport over SONETLEX, PPP/BCP and Cisco HDLC encapsulationGFP encapsulationHO-VCAT and LO-VCAT with LCASRPR

Point to pointPoint to multi pointShared Ring


What about the Near Future?

Flexible initially, ROADMs later2003-Flexible OADMs

Electrical switching good enough

Incorporated into ROADMs

2006-Photonic switching

Initial application for scalability, reduced network mgt cost

Future application for dynamic services

2005-Optical control plane/ GMPLS

Reduced bandwidth makes sense, but complicated to get right

2002-2004Electrical mesh protection

Why?When?Topic


What about the Far Future?

Complicated and requires advances in optical technology

Far outAll-optical mesh protection

Too complicated. Single-vendor islands are good enough

Never?Interoperability at the optical layer

Not as challenging as packet switching, but must be justified over simple optical bypass + sophisticated electrical routers

Far outBurst switching

Too many challenges with ns-level optics and sophisticated logic at this layer

Never?Packet switching

Why?When?Topic


Other potential topics for discussion (let me know which ones to expand upon)

• Why stat muxing should be part of the transport layer? (interesting for the infocom crowd) – we have good slides on this

• The future of ULH, 40G and up

• How everything changes if OEOs become real cheap – AON may go away or become a band level solution

• Photonic switching (from 1000 port OOO to OADM w varying levels of agility)

• Fully automated photonic layer (pre-deployment issue)


MSTP Architecture

Packet

SwitchADM/ DCS

DWDM

Transponder Muxponder

λ1λ2

λ3λ: 150M to 10G

Fiber

10G10Gλ1

Gigabit Ethernet

SDH/SONET 2.5G

600M

E-3/DS-3

Internet VoIP LAN

150M

Three Core Functions: Three Core Functions: 1.1. SONET/SDH transport with SONET/SDH transport with

TDM aggregationTDM aggregation2.2. Native Ethernet, IP, SAN Native Ethernet, IP, SAN

switching and aggregationswitching and aggregation3.3. Intelligent DWDM with Intelligent DWDM with

wavelength services wavelength services Streamlines Streamlines CapExCapEx