optical networking app

1. The Future of Optical Networking
Rajiv Ramaswami
rajivr@cisco.com
Acknowledgement: Ori Gerstel
Session Number
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 1

2. Optical Market Forecast (WW in $M)
35000
30000
25000
20000
15000
10000
5000
0
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
Presentation_ID
• Industry consolidation
© 2001, Cisco Systems, Inc. All rights reserved. 2

3. Technology Adoption in the Network
MSPP: Multi-service provisioning platforms
TDM and packet services over SONET
MSSP: Multi-service switching platforms
STS-level optical (electrical) cross connect
Node consolidation, mesh networking
MSTP: Multi-service transport platforms
Optimize multiservice TDM, stat mux + DWDM
Dynamic optical networks
Time-of-day & BOD connections
Packet switching / Burst switching
2000 2001 2002 2003 2004 2005 … Never?
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 3

4. MSPP – MSSP – MSTP: how do they fit in?
Inter Office Metro/Regional
200+km, 10Gb, Multiservice
MSPP
MSPP
Access/Collector Intra-Metro/Regional CO/POP Access Collector
Multiservice Provisioning
Transport Fabric
Multiservice Provisioning
Transport Fabric 50-80 km, 2.5 Gb & 10 Gb, Multiservice
Platform
Platform
DS-1 to OC-192 TDM
DS-1 to OC-192 TDM
Access/Collector 10/100Mb and GbE
10/100Mb and GbE
Transport Fabric
Integrated ITU optics
Integrated ITU optics
Access/Collector
Transport Fabric
Access MSPP
Access MSPP
DS-1 to OC-48 TDM
DS-1 to OC-48 TDM
Metro/Regional Hub
Edge Switching/Routing
Multi-band Cross-connect 10/100Mb and GbE
10/100Mb and GbE
Customer Aggregation
CPE
CPE Service Rings
Point, POP or Co-Lo
Service 10-20 km, Service Aggregation
Rings
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 4

5. MSPP – MSSP – MSTP: how do they fit in?
MSSP
MSSP
Multiservice Switching
Multiservice Switching
Platform
Platform
320 Gb/s to Multi Tb/s
320 Gb/s to Multi Tb/s
DS3 to OC-192 TDM
DS3 to OC-192 TDM
Non-blocking VC-4 / /STS-1
Non-blocking VC-4 STS-1
Cross-connect Matrix
Cross-connect Matrix
ITU Optics
ITU Optics
1Gb/s & 10Gb/s Ethernet
1Gb/s & 10Gb/s Ethernet
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 5

6. MSPP – MSSP – MSTP: how do they fit in?
ONS 15454 MSPP
ONS 15600 MSSP
Inter OfficeONS 15454 MSPP
ONS 15600 MSSP
Metro/Regional
Multiservice Platform
Multiservice Platform
Multiservice Switching
200+km, 10Gb, Multiservice
Multiservice Switching
MSTP
MSTP
DWDM withor32, 10Gto STM-
Support for MSPP software
Support forE1/DS-1
128, 2.5G or E1/DS-1 to STM-
128, 2.5G 32, 10G
DWDM with MSPP software
CO/POP Accesswellas
64/OC-192, asin Collector
SDH/SONET well single
intelligence 10 ina single
Access/Collector Intra-Metro/Regional
intelligenceas Gb, Multiservice
Transport Fabric
64/OC-192,
SDH/SONET a as
Transport Fabric 50-80 10/100Mb and GbE in a
km, 2.5 Gb &
chassis and GbE in a
10/100Mb
chassis
Access chassis regional
Accessthrough
single chassis regional
single through
reach (100s of VC-4 STS-1
Non-blocking km) / /STS-1
Non-blocking VC-4
reach (100s of km)
Integrated ITU optics with
Cross-connect optics with
Integrated ITU Matrix
Cross-connect Matrix
Access/Collector Flexible OADMs
32, 100Ghz wavelengths
Flexible OADMs 2.5G
32, 100Ghz wavelengths
Transport Fabric Scalable to 2048, 2.5G
Scalable to 2048,
Access/Collector Robust,&carrier-classDWDM
System carrier-class DWDM
NEBS3 &OSMINE certified
Robust, OSMINE certified
NEBS3
System
Transport Fabric
λ ITUOptics
λServices
ITU Optics
Services
Metro/Regional Hub 10GigE,10Gb Ethernet Fiber
1Gb & 10Gb Ethernet Fiber
10GigE,GigE, ESCON,
1Gb & GigE, ESCON,
Edge Switching/Routing
Multi-band Cross-connect
Channel, SDH/SONET 150M
Channel, SDH/SONET 150M
to 10G
to 10G
Customer Aggregation
CPE
CPE Service Rings
Point, POP or Co-Lo
Service 10-20 km, Service Aggregation
Rings
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 6

7. Innovations for Multiservice over
SONET/SDH Service Delivery
• Deploying advanced services is
key to profitability Advanced Services
• Ethernet, Video, VoIP, and SAN
Interconnect key service needs
• QoS is necessary for advanced
services and providing SLAs
• Cisco IOS provides advanced per- QoS Engine
packet, per port QoS
• Packet Multiplexing is crucial for
network efficiency and scale
• Cisco technology innovations Packet Multiplexing to the
(MPLS, RPR, EoS) enable this Transport Layer
• SONET/SDH will need to become
more efficient
• GFP, CCAT, VCAT, and LCAS all Data-Optimized SONET/SDH
offer incremental improvements
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 7

8. Data Transport Evolution
Internet,
IXC LH handoff and/or
ILEC Regional Net
Enterprise B
SONET/SDH Ring
Enterprise A
SONET/SDH Ring
Enterprise A
Ethernet Private Line: point-to-point
SONET/SDH Ring “pipe” interconnecting end customer
sites (line rate or bandwidth scaled)
Transparent LAN Service: LAN
extension between several sites
Enterprise C Enterprise C
Internet Access: point-to-point
Enterprise B Enterprise C connection, customer site to POP
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 8

9. Data Transport Evolution
Internet,
Point to point
IXC LH handoff and/or
ILEC Regional Net
Point to multi point
Shared Ring
Enterprise B
SONET/SDH Ring
Enterprise A
SONET/SDH Ring
Enterprise A
Ethernet and IP switching and QoS
SONET/SDH Ring Integrated Ethernet switching and IP routing
VLAN support (802.1Q and QinQ)
Diff-serv QoS implementation
Enterprise C Enterprise C Ethernet transport over SONET
Efficient
LEX, PPP/BCP and Cisco HDLC encapsulation
Enterprise B Enterprise C
GFP encapsulation
HO-VCAT and LO-VCAT with LCAS
RPR
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 9

10. What about the Near Future?
Topic When? Why?
Electrical mesh 2002-2004 Reduced bandwidth makes sense,
protection but complicated to get right
Optical control plane/ 2005- Initial application for scalability,
GMPLS reduced network mgt cost
Future application for dynamic
services
Flexible OADMs 2003- Flexible initially, ROADMs later
Photonic switching 2006- Electrical switching good enough
Incorporated into ROADMs
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 10

11. What about the Far Future?
Topic When? Why?
All-optical mesh Far out Complicated and requires
protection advances in optical technology
Burst switching Far out Not as challenging as packet
switching, but must be justified
over simple optical bypass +
sophisticated electrical routers
Packet switching Never? Too many challenges with ns-level
optics and sophisticated logic at
this layer
Interoperability at the Never? Too complicated. Single-vendor
optical layer islands are good enough
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 11

12. Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 12

13. 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)
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 13

14. MSTP Architecture
λ: 150M to 10G
λ3
DWDM
Fiber λ2
λ1
ADM/ Packet Transponder
DCS Switch Muxponder
Gigabit Ethernet
Three Core Functions: Internet VoIP LAN
1. SONET/SDH transport with 10G SDH/SONET
TDM aggregation λ1 2.5G
600M
2. Native Ethernet, IP, SAN 150M
switching and aggregation E-3/DS-3
3. Intelligent DWDM with
wavelength services
Streamlines CapEx
Presentation_ID © 2001, Cisco Systems, Inc. All rights reserved. 14