Post on 30-Dec-2020
transcript
1© 2001, Cisco Systems, Inc. All rights reserved.
Session NumberPresentation_ID
The Future of Optical Networking
Rajiv Ramaswami
rajivr@cisco.com
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
333© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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
444© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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
Access/CollectorTransport 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
555© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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
Non-blocking VC-4 / STS-1 Cross-connect Matrix
ITU Optics
1Gb/s & 10Gb/s Ethernet
MSPP – MSSP – MSTP: how do they fit in?
666© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
Metro/Regional HubEdge Switching/RoutingMulti-band Cross-connect
Customer Aggregation Point, POP or Co-Lo
Intra-Metro/RegionalTransport Fabric
Access/CollectorTransport Fabric
Access/CollectorTransport 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
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
Non-blocking VC-4 / STS-1 Cross-connect Matrix
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
Non-blocking VC-4 / STS-1 Cross-connect Matrix
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
MSPP – MSSP – MSTP: how do they fit in?
777© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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
888© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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
999© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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
101010© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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
111111© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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
121212© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
131313© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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)
141414© 2001, Cisco Systems, Inc. All rights reserved.Presentation_ID
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