knom2001 1 optical internet and network management 2001. 5. 25. minho kang professor and oirc...
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KNOM20011
Optical Internet
and
Network Management
2001. 5. 25.
Minho KangProfessor and OIRC Director
Information and Communications Univ.
KNOM20012
Contents
Introduction to Optical Internet
GMPLS over DWDM
Korean National R&D Programs
Conclusion
KNOM20013
Background▣ Exponential Growth of Internet Traffic
◈ X23 of voice traffic (2005)◈ Anything over Internet
Web, email, ftp, e-commerce … VR, Home Networking, Internet Appliance, Wearable computer
◈ Bottleneck of today’s Internet-speed, QoS
▣ Revolution of Optical Networking◈ Bandwidth/ fiber : 50 Tb/s ◈ Bandwidth doubling every 6 months-exceeding Moor’s Law◈ Advancing Components : optical switch, optical amplifier, wav
elength converter
▣ New Era of Networking◈ Simplified Architecture, Lower cost, Scalable capacity
KNOM20014
Optical Internet▣ Optical Internet Definition
◈ IP/DWDM networks
◈ Nortel, Sprint, Frontier, CANARIE
◈ Network link layer connections are dedicated wavelengths on a DWDM optical fiber directly connected to a high performance network router Replaces traditional ATM and SDH
▣ Significant Reduction in Cost◈ Capital cost saving up to 50-90%
◈ Operating cost saving up to 60%
KNOM20015
Unique Characteristics of Internet Traffic▣ Self Similar in time and space
KNOM20016
Unique Characteristics of Internet Traffic(2)▣ Asymmetric Data Flows
◈ Due to the Presence of Large Server Farms(MS, Netscape)) that generate large amounts of data as web pages
◈ 2:1 in BB, 20:1 in edge network-RealVideo, Broadcast.com
◈ Optical Internet can take advantage of this asymmetry-Dynamic RWA Savings approach 50%
▣ Short Session period
▣ Many Nodes
KNOM20017
DWDM Revolution▣ Flurry of DWDM Product Announcement
◈ In excess of 100 channels Dramatic bandwidth increase in installed fiber
◈ Long-Haul Backbone Deployment first
◈ Recent Metro Network application Ciena, Nortel, Cambrian, …. Bandwidth efficiency is of less issue- cheaper
▣ Optical multiplexing◈ Traditional-SDH Time division multiplexing, ATM
◈ Changing scenario-DWDM
KNOM20018
1550nm 1300nm 800nm
1600 1400 1200 1000 800 600 400 200nm
Operating range
10 m8
10 m-14
Wavelength
Acoustic Radio InfraredVisible
Ultraviolet X-ray Gamma ray
Cosmic rays
Visible light
Wavelengths for Optical Networks
KNOM20019
Vocie,Video, data, multimedia...Vocie,Video, data, multimedia...
IPIP
Sonet/SDHSonet/SDH
WDMWDM(or Fiber)(or Fiber)
Applicationslayer
Switching/routing layer
Transport layer
Optical layer
Layered Architecture of IP over xxx
HDLC /HDLC /SDLATMATM
IPoSIPoS
Open optical interfaceOpen optical interface
IPoWIPoWIPoAIPoA
Gigabit Ethernet/Fiber Channel
Gigabit Ethernet/Fiber Channel
KNOM200110
Optical Network EvolutionIP
POS/POLpoint-to-point
WDM optical layer(virtual fiber)
IP
MPLS
circuit-switched WDM
optical layer(connection-oriented)
IP
packet-switchedWDM
optical layer(connection-less)
Phase I Phase II Phase III
- Issues- Information
Transfer
- Connectivity
- Issues- OADM/OXC- IPoW- Call control
- Issues-optical burst switching- Fast optical switching
KNOM200111
Characteristics of IPoW▣ Simplified interface between the IP network layer
and the physical layer◈ Intermediate SDH Frame
Complete compatibility with existing SDH networks
New “Fast IP”, “Slim SDH”,”SONET lite”are being defined
◈ Intermediate Standard LAN Frame e.g. Gigabit Ethernet(GbE) / Frame Relay(FR)
A new GbE frame is being defined
◈ MPLS-wavelenghs are treated as very low level point-to-point links for packet transmission Carry out restoral and path protection at IP layer
▣ Evolution toward Connectionless Network
KNOM200112
Advanced IPoW Protocol▣ Fast provisioning of Network Resources
▣ Statistical Sharing of Resources◈ Variable Length Packet or Burst Support
▣ Secure the optical network transparency◈ Speed, data format
▣ Limited use of optical buffers at optical layer◈ No optical RAM yet
◈ Existing electrical buffer needs o/e/o converters which restricts the transparency
KNOM200113
Router
OpticalEthernet
LAN
Optical Internet Network
Core IPoW Network
ManagementProtection Re-routing
DWDM
Router
SDH/WDMRing
LANEnterpriseNetwork
AccessRouter
AccessRouter
EnterpriseNetwork
DWDM
KNOM200114
Optical Packet over WDM▣ Optical Packet Networks
◈ High Speed in optical network Maybe a natural move to circumvent potential bottleneck of
electronic processing DWDM network has surpassed 6 Tb/s over several 1,000 km
capability
◈ From circuit to packet Flexibility in networking , VPN configuration Aggregation of granular traffic
◈ Technological challenges Optical packet synchronization, optical RAM, and other optical
device issues, optical WDM layer protection/restoration
KNOM200115
Optical Switching▣ Optical circuit switching
setup delay : round trip time Limited number of wavelength, fiber no good for bursty & short session
▣ Optical packet switching Buffer is necessary for statistical sharing tight coupling of header and data Container for small parcel- high overhead
▣ Optical burst switching Good compromise for today No need of Buffer, cut-through switching Network reconfiguration time of 10 ms
KNOM200116
Protocol Comparison▣ optical packet switching vs. JET-based OBS
KNOM200117
Issues of Optical Internet▣ Current Technology Issues
◈ GMPLS ◈ Optical Burst Switching◈ RWA Algorithm◈ Optical Ethernet
▣ and Packet switching on optical channel layer Optical packet header processing Optical buffer, wavelength converter, switching Optical network protection, routing, control Scalable Architecture, Traffic management, QoS Network emulation……………………………….
KNOM200118
ContentsEvolution of Optical Internet
GMPLS over DWDM
Korean National R&D Programs
Conclusion
KNOM200119
MPLS over WDM(1)▣ Need of IP protocols to support different levels of
QoS◈ especially in more demanding real time video◈ MPLS is one technology that is gaining wide accepta
nce as a means for enabling IP to behave in a connection-oriented fashion
▣ Several standards activities for the marriage of MPLS and WDM into a unified structure for the Internet◈ Traditionally, the Internet treats the protocol layers
below IP layer of little interest Collapsing functions across layers
KNOM200120
MPLS over WDM(2)▣ MPLS is analogous to cell or packet switching in v
irtual circuit oriented networks◈ Such as ATM or X.25 networks for switching from hop to hop
◈ MPLS is a circuit switching system at OSI layer 3 LIB(label information base) of MPLS-LSR is mapped one-to-one to F
EC(forward Equivalence Classes)
▣ WDM networks is emerging in the market◈ OXC, or optical wavelength switch, makes mesh network possi
ble and establish light paths between any pairs.
◈ Future OXCs may have wavelength conversion capabilities and will make dynamic set up of light paths that require end-to-end wavelength continuity
KNOM200121
Issues of MPLS over WDM(1)▣ WDM Network Management
◈ MPLS control plane requires up-to-date status status information on the physical plant of the network Currently the interface between a client equipment(such as a
LSR) and the network elements of a DWDM transport system is not standardized
New agreements to use the SDH protocol header (overhead ) byte and DCC are needed
◈ If payload is not framed by SDH (such as GbE), a new mechanism needs to be developed
KNOM200122
Issues of MPLS over WDM(2)▣ Automatic Provisioning
◈ Currently the configuration and provisioning of WDM links and light paths are done manually
Takes weeks or months to complete
◈ As network evolves from p-t-p and ring network to p-t-mp mesh topology
An automatic provisioning mechanism is needed to effectively manage the network, especially if a service provider wants to offer bandwidth or light path on demand
KNOM200123
Issues of MPLS over WDM(3)▣ Dynamic Wavelength Assignment
◈ Necessary to support traffic engineering function and automatic restoration and recovery and to associate MPLS labels with wavelengths In static networks, heuristic algorithms based on graph coloring
are used to minimize the number of wavelengths required to support the offered load
In dynamic networks, reassigning existing light paths to new wavelength is one way to reduce the number of wavelengths,
◈ And will require the OXCs to be able to adaptively reconfigure the LIBs and make their neighbors aware of any change that occur
KNOM200124
Issues of MPLS over WDM(4)▣ Protection and Restoration
◈ Mesh networks with multiple wavelengths offer more flexibility in designing protection and restoration mechanisms
The important issue is how to incorporate these into the MPLS control plane to enhance the reliability options and provide QoS for IP
◈ Integration network layer protection mechanisms into a network that already has protection and restoration capability at the lower layers requires for interoperability
KNOM200125
Issues of MPLS over WDM(5)▣ End system Identification and Network service
discovery◈ To associate IP labels with wavelengths, a discovery
procedure must be established
◈ Information on who, where, what, and usage status
◈ Furthermore, a method of conveying the discovery information ,before MPLS control and signaling channel is established, must be developed
KNOM200126
Issues of MPLS over WDM(6)▣ MPLS control channel and signaling protocols
◈ One or more control and signaling channels between the LSRs and WDM NE must be set up
for distribution of topology status information, monitoring physical layer status and allocation an/de-allocation of bandwidth
▣ Many alternatives- control channel location, ways to establish, protocols(RSVP and CR-LDP for signaling and BGP,IS-IS, and OSPF for routing)
◈ Debates more on signaling protocols RSVP- proven, deployed technology, improvement on scalability CR-LDP- more reliable since it run over a dedicated TCP connectio
ns
KNOM200127
Issues of MPLS over WDM(7)▣ Signaling parameters
◈ End point identification Should every NE have an IP address? How small should the granularity be?
◈ bandwidth characteristics and light paths attributes Encoding, capacity, priority and protection
◈ QoS support Type of protection, priority in restoration, preemptibility, path disc
overy, availability rate, etc
◈ Bandwidth actions Creation, deletion, query, etc
KNOM200128
Issues of MPLS over WDM(8)▣ Security
◈ Protocols and procedures need to be established to maintain a trusted and secure link for the control channel,
In addition to protecting the data channel
◈ Relatively easy to gain physical access to a fiber link Can be defeated by anti-jamming techniques in the control channel
or by enabling the network to identify attacks and update its topological information to route traffic.
▣ IP routers vs optical switches◈ OXCs and LSRs perform similar functions
Should one develop a fat or dumb OXC?
▣ UNI vs NNI◈ Router-to-router connections are really NNIs◈ Necessary to define NNI specifications if optical network is no
t composed of a single transparent cloud
KNOM200129
Optical Internet Network Control▣ From User’s Perspective
◈ Most important aspect of a communication network is the ability to connect to the receiver
◈ Bandwidth on Demand
▣ From Operator’s Perspective ◈ Most important aspect is the ability to control the operation of
the network◈ Optical VPN
▣ Optical Internet Control Plane- Optical MPLS approach Transfer control information (signaling units) between elements in
network Control information includes signaling messages to establish and
terminate connections, and other information such as directory service and credit card messages
KNOM200130
Traffic Engineering (TE)▣ Goal
◈ To facilitate efficient and reliable network operations while simultaneously optimizing network resource utilization and traffic performance
▣ Traffic Engineering Performance Objectives◈ Traffic Oriented
Enhance the QoS of traffic streams Minimization of packet loss, delay, maximization of throughput, enfo
rcement of service level agreements
◈ Resource Oriented The optimization of resource utilization : prevention of over utilizatio
n and congestion Load balancing : an important network performance optimization po
licy
KNOM200131
Issues of Optical Internet Traffic Engineering▣ Scalability enhancements
◈ Routing and link state management such as Label-Switched Path(LSP) hierarchy and link bundling
▣ Route selection ◈ Constraints such as signal impairments, wavelength
convertibility, add/drop interface availability, delay and administrative policy
▣ Traffic grooming and/or splitting◈ Minimize terminating equipment costs
▣ Multicast routing with sparse light-splitting ▣ Diverse routing
◈ For traffic protection and restoration
▣ Standard development on traffic engineering using GMPLS▣ Test-bed implementations and network trials
KNOM200132
Generalized MPLS (GMPLS)
▣ Goals◈ A single network-wide control plane to
distribute optical transport network topology state set up optical channel trails
◈ Support traffic engineering functions and enable protection and restoration capabilities
◈ Simplify the integration of optical switches, optical transport, and label switching routers
▣ Extends the MPLS control plane to the optical and TDM domains
▣ Does so by treating circuits, lambdas, fibers, and bundles as labels
KNOM200133
Generalized MPLS (GMPLS)
▣ Goals◈ A single network-wide control plane to
distribute optical transport network topology state
set up optical channel trails
◈ Support traffic engineering functions and enable protection and restoration capabilities
◈ Simplify the integration of optical switches, optical transport, and label switching routers
▣ Extends the MPLS control plane to the optical and TDM domains
▣ Does so by treating circuits, lambdas, fibers, and bundles as labels
IP Layer
Optical Layer
GMPLSControl & Management
Flexible TransportService
Convergence of IP and Optics
Ref : Generalized Multi-Protocol Label Switching (GMPLS) Architecture <draft-many-gmpls-architecture-00.txt> Feb. 2001
KNOM200134
On going good Solution & Our Solution▣ On going good solution
◈ Replace traditional ADM and use Intelligent Optical Cross-Connects (OXCs) (implementing MPLS-based control plane)
◈ The idea here is to reuse the intelligence of MPLS TE (and associated constraint based routing) at the optical layer
Service layer
Transport layer
“Rich”IP
“Intelligent”ON
QoS -TrafficEngineering
Restoration -BandwidthManagement
I PIP
ATMATM
SONETSONET
DWDMDWDM
PacketIP/GMPLS
PacketIP/GMPLS
LayerLayer
33
22
11
00
DWDMDWDM
LayerLayer
3/23/2
1/01/0
Service layer
Transport layer
“Rich”IP
“Intelligent”ON
QoS -TrafficEngineering
Restoration -BandwidthManagement
I PIPIPIP
ATMATMATMATM
SONETSONET
DWDMDWDMDWDMDWDM
PacketIP/GMPLS
PacketIP/GMPLS
LayerLayer
33
22
11
00
DWDMDWDMDWDMDWDM
LayerLayer
3/23/2
1/01/0
GMPLS control plane
Our Solution
Ref : Daniel Awduche, et.al, “Multiprotocol Lambda Switching: Combining MPLS Traffic Engineering Control with Optical Crossconnects,” IEEE Comm. Mar. Mar. 2001.
KNOM200135
GMPLS Architecture/FrameworkArc
hitectu
re/F
ram
ew
ork
Data
Pla
ne
TDM Wavelength Waveband Fiber
Optical
Shim Label
DLCI Label
VC Label
POS, GE
Frame Relay
ATM
Control
Pla
ne Signaling
Routing
CR- LDP,RSVP- TE
OSPF- TEIS- IS- TE
Signaling andRoutingestensions forthe Opticallayer
Generalized Label
Refs : Generalized MPLS - Signaling Functional Description <draft-ietf-mpls-generalized-signaling-04.txt> May. 2001. Generalized MPLS Signaling - CR-LDP Extensions <draft-ietf-mpls-generalized-cr-ldp-03.txt> May. 2001.Generalized MPLS Signaling - RSVP-TE Extensions <draft-ietf-mpls-generalized-rsvp-te-03.txt> May. 2001.
KNOM200136
Functional Diagram of GMPLS Control Plane
TE policy Manager
TEDatabase
CR- LDP orRSVP- TEExtension
BandwidthManager
OSPF or IS- IS
TE- extensions
PathSelection
Link Management
Ref : Using Two Octets for Bandwidth Values in OSPF and ISIS extensions for Traffic Engineering <draft-ma-ospf-isis-te-00.txt> Feb. 2001
KNOM200137
IP Routing Considerations (1/2)
▣ Traditional IP networks – destination based shortest path first routing (ex RIP, OSPF, IS-IS)◈ Drawback : traffic independent and does not support
diverse routes◈ Equal Cost Multi-Path Routing (ECMP) – no load
balancing (no feedback between traffic load and the routing algorithm)
▣ Optimized Multi-Path Routing (OMP)◈ Utilize and extends a link state routing protocol to
periodically broadcast link loading information◈ Split the traffic load among multiple near-equal cost
paths
KNOM200138
IP Routing Considerations (2/2)
▣ MPLS◈ The routing and forwarding functions in IP are separated◈ Constraint based routing : perform multi-path load balancing
of IP traffic Computing the shortest-cost-path on an auxiliary graph formed by de
leting heavily loaded links of the topology
◈ Manipulate the Forwarding Equivalence Class (FEC) to fine-split the LSPs and achieve more effective load balancing
▣ Traffic Engineering (IP over re-configurable WDM)◈ Affected through wavelength circuit configuration that adapts t
he IP network (virtual) topology to evolving traffic pattern◈ By exploiting the WDM layer’s reconfigurability, we can chang
e the IP network’s virtual topology to better match the ensuing traffic demand pattern
KNOM200139
Integrated IP/WDM Traffic Engineering Framework
▣ MPLS-TE algorithm◈ Balances load between LSPs for a given node pair, until it h
its the max-flow (min-cut capacity)◈ The load balancing capacity of MPLS-TE alone, however, is
bounded by the underlying virtual IP topology
▣ WDM reconfiguration algorithm◈ Drive a new IP virtual topology based on the traffic deman
d matrix collected from the IP/MPLS router measurements◈ Not an adequate tool for IP traffic load balancing mainly du
e to the coarse and fixed wavelength granularity
▣ Integrated IP/WDM Traffic Engineering◈ The traffic engineering on layer 2.5/3 ad WDM reconfigura
tion are mutually complementary◈ Linking MPLS load balancing and WDM reconfiguration t
ogether in a well-coordinated way
KNOM200140
Integrated Traffic Engineering Workflow with MPLS/MPλS for IP/WDM
1) IP trafficMeasurement
Analysis
3)BandwidthDemand
Projection
IP/MPLSReachesMin-CutLimit?
WDM/MPSAttempts
Reconfiguration?
2) IP/MPLSLoad
Balancing
5) VirtualTopologyDesign
TopologyDesign
Successful?
Too manyFailed
Designs?
7) CapacityUpgrade
Recommendation
6) VirtualTopologyMigration
Yes
No
NoYes
Yes
YesOptimization
Ref : John Y. WEI, et.al, “Network Control and Management for the Next Generation Internet,” IEICE Trans. Comm. Oct. 2000.
KNOM200141
ContentsEvolution of Optical Internet
GMPLS over DWDM
Korean National R&D Programs
Conclusion
KNOM200142
MIC Optical Internet Development ProgramTelecommunications Review Vol. 11, No. 2, 2001. March-April, pp. 1-13
▣ Period :2001-2005
▣ Budget: 180 B Korean Won
◈ Ministry of Info. and Comm.: 99B Won
◈ Industries: 81B won
▣ Target Key Technologies
◈ OI network and system integration Network and system configuration, Test bed, Standards
◈ Switching and routing 10 G Ethernet, 1 Tb/s router, basic optical packet router
◈ Optical transmission Tb/s WDM system and WXC system, 40 Gb/s TDM
◈ Optical access ATM/WDM/Hybrid WDM-TDMA PON, OI Access system
◈ Optical components and accessories
KNOM200143
OI Key Technology Vision forDevelopment and Commercialization
Telecommunications Review Vol. 11, No. 2, 2001. March-April, pp. 1-13
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA >120 nm Optical Amplifier>120 nm Optical Amplifier
네트워크기술 이종혼합망 광전인터워킹망
FTTC
FLC Hybrid PON WDM-PON
FTTH
10G 80G
광가입자전송 기술
1Gigabit Ethernet
10 Gigabit Ethernet
GbE 기술
수십G
라우터수백G
라우터
Tb/s
라우터광패킷 기반광 라우터
라우터 기술
개방형 광인터넷망
5.2 T OXC
전광통신망
40 Gigabit
Ethernet
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA >120 nm Optical Amplifier>120 nm Optical Amplifier
네트워크기술 이종혼합망 광전인터워킹망
FTTC
FLC Hybrid PON WDM-PON
FTTH
10 80G
광가입자전송 기술
1Gigabit Ethernet
10 Gigabit Ethernet10 Gigabit Ethernet
GbE 기술
수십G
라우터수백G
라우터
Tb/s
라우터광패킷 기반광 라우터
라우터 기술
개방형 광인터넷망
5.2 T OXC
전광통신망
40 Gigabit
Ethernet
40 Gigabit
Ethernet
ATM-PONATM-PON
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA >120 nm Optical Amplifier>120 nm Optical Amplifier
네트워크기술 이종혼합망 광전인터워킹망
FTTC
FLC Hybrid PON WDM-PON
FTTH
10G -80G
광가입자전송 기술
1Gigabit Ethernet
10 Gigabit Ethernet10 Gigabit Ethernet
GbE 기술
수십G
라우터수백G
라우터
Tb/s
라우터광패킷 기반광 라우터
라우터 기술
개방형 광인터넷망
5.2 T OXC
전광통신망
40 Gigabit
Ethernet
40 Gigabit
Ethernet
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA >120 nm Optical Amplifier>120 nm Optical Amplifier
네트워크기술 이종혼합망 광전인터워킹망
FTTC
FLC Hybrid PON WDM-PON
FTTH
10 80G
광가입자전송 기술
1Gigabit Ethernet
10 Gigabit Ethernet10 Gigabit Ethernet
GbE 기술
수십G
라우터수백G
라우터
Tb/s
라우터광패킷 기반광 라우터
라우터 기술
개방형 광인터넷망
5.2 T OXC
전광통신망
40 Gigabit
Ethernet
40 Gigabit
Ethernet
40 Gigabit
Ethernet
40 Gigabit
Ethernet
ATM-PONATM-PONATM-PONATM-PON
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA >120 nm Optical Amplifier>120 nm Optical Amplifier
네트워크기술 이종혼합망 광전인터워킹망
FTTC
FLC Hybrid PON WDM-PON
FTTH
10G 80G
광가입자전송 기술
1Gigabit Ethernet
10 Gigabit Ethernet10 Gigabit Ethernet
GbE 기술
수십G
라우터수백G
라우터
Tb/s
라우터광패킷 기반광 라우터
라우터 기술
개방형 광인터넷망
5.2 T OXC
전광통신망
40 Gigabit
Ethernet
40 Gigabit
Ethernet
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA >120 nm Optical Amplifier>120 nm Optical Amplifier
네트워크기술 이종혼합망 광전인터워킹망
FTTC
FLC Hybrid PON WDM-PON
FTTH
10 80G
광가입자전송 기술
1Gigabit Ethernet
10 Gigabit Ethernet10 Gigabit Ethernet
GbE 기술
수십G
라우터수백G
라우터
Tb/s
라우터광패킷 기반광 라우터
라우터 기술
개방형 광인터넷망
5.2 T OXC
전광통신망
40 Gigabit
Ethernet
40 Gigabit
Ethernet
40 Gigabit
Ethernet
40 Gigabit
Ethernet
ATM-PONATM-PONATM-PONATM-PON
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1
T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA >120 nm Optical Amplifier>120 nm Optical Amplifier
네트워크기술 이종혼합망 광전인터워킹망
FTTC
FLC Hybrid PON WDM-PON
FTTH
10G -80G
광가입자전송 기술
1Gigabit Ethernet
10 Gigabit Ethernet10 Gigabit Ethernet
GbE 기술
수십G
라우터수백G
라우터
Tb/s
라우터광패킷 기반광 라우터
라우터 기술
개방형 광인터넷망
5.2 T OXC
전광통신망
40 Gigabit
Ethernet
40 Gigabit
Ethernet
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1
상용화 연도
전송용량
망구성
다중화 방식
회선분배기술
2000 2005 2010 2015
fixed ring
> 3 Tera
flexible rings
Flexible Mesh
10G ETDM 40G - ETDM> 3T Systems
160G WDM 1T-WDM
160G OXC 1.2T OXC T OXC
All
Optical
Network
1 T400 G
광중계 기술 30nm EDFA30nm EDFA 80nm EDFA80nm EDFA >120 nm Optical Amplifier>120 nm Optical Amplifier
네트워크기술 이종혼합망 광전인터워킹망
FTTC
FLC Hybrid PON WDM-PON
FTTH
10 80G
광가입자전송 기술
1Gigabit Ethernet
10 Gigabit Ethernet10 Gigabit Ethernet
GbE 기술
수십G
라우터수백G
라우터
Tb/s
라우터광패킷 기반광 라우터
라우터 기술
개방형 광인터넷망
5.2 T OXC
전광통신망
40 Gigabit
Ethernet
40 Gigabit
Ethernet
40 Gigabit
Ethernet
40 Gigabit
Ethernet
ATM-PONATM-PONATM-PONATM-PONATM-PONATM-PONATM-PONATM-PON
OXC
development
Multiplexing method
Network Configuration
Transmission Capacity
Network architecture
Commercialization
year
Optical Access Technology
GbE technology
Router technology
Optical amplifier
Open optical network
Hybrid network O/E Interworking network All optical network
10 Gb/s rout
er
Dozens of
routers
1Tb/s
router
100 Gb/s ro
uter
Optical packet based
Optical router
KNOM200144
Optical Internet Research Center▣Implemented by MOST and KOSEF
◈ Engineering Research Center of Excellence
◈ 2000.7- 2009. 2
◈ 18B Korean Won
▣Research Target◈ 2000.7 – 2003. 2 : Study on 1Tb/s optical MPLS Internet router
which optically switches IP packet-flow
◈ 2003. 3 – 2006. 2 : Study on 10 Tb/s optical packet Internet router which optically switches IP packets
◈ 2006. 3 – 2009. 2 : Study on self-routing, 100Tb/s all optical packet Internet router
KNOM200145
OIRC Participants
OIRC
UniversitiesICU: 8 Labs
SNU, Korea U., Soongsil U, Dongeui U.
University of Melbourne
Research LabsETRI
Korea Telecom
Australian Photonics CRC
IndustriesKorea Telecom, Haedong, Telion,
Horim, Ace Electronics, Litron, ZenPhotonics, ITec
Nortel Networks (Canada) Virtual Photonics (U.S.A.)
KNOM200146
Contents
Evolution of Optical Internet
GMPLS over DWDM
Korean National R&D Programs
Conclusion
KNOM200147
Conclusion(1)▣ What was Quick is now Slow
◈ Bandwidth on Demand, Pay-per-Use Provisioning time for high speed services Maximize carriers’ revenue and optical bandwidth marketplace
◈ MPLmS, OBS Bridge IP/MPLS layer and optical/transport layer Bridge electrical control and optical transport Beyond the simple integration of optical interfaces into terabit router
s
▣ What was distant is now Near◈ Ultra-Long-Haul DWDM system
Transcontinental 6 Tb/s per fiber
◈ New Networking paradigm Lattice Networks
KNOM200148
Conclusion (2)▣ The Speed of Change-OFC2000, OIW2000
▣ Two Facets of optical Internet◈ IPoW in the core network
◈ Optical Ethernet in the LAN and MAN GbE and 10GbE signals transported over WDM networks De-facto standard for gigabit Internet connectivity
▣ A New Era◈ No more Bell Heads vs. Net Heads
Only organizations that marry IP and WDM will succeed Distance is no more limiting factor in network design How much bandwidth is enough?
◈ Optical Virtual Private Network, Network Darwinism
KNOM200149
1st OIRC Workshop (Aug 23-24, 2000)