OFC’09 Summary ---Core Networks Part I Avishek Nag.

OFC’09 Summary---Core Networks

Part IAvishek Nag

OFC’09 Technical Sessions on Core Networks

OMG: Optical Grids and Enabling Technologies OML: IP/Optical Integration OMO: Advanced Optical Network Infrastructure OMQ: Optical Network Architecture OWI: Impairment-Aware Networking OWK: Applications over Optical Networks OWL: Multi-Layer and Multi-Domain Networks OWY: Multi-Layer Resilience OThJ: Network Elements OThO: Traffic Aggregation and Scheduling OThQ: Network Design and Energy Efficiency PDPD: Post-Deadline Papers Session

NFOEC’09 Technical Sessions on Core Networks

NTuA: Converged Ethernet Networks NTuB: GMPLS and Network Control NThA: Ethernet and High-Speed Systems NThE: Efficient Network Designs NThF: IP over DWDM Networks

Advanced Optical Network Infrastructure Code Title Author/Affiliate Topic Trends

OMO1 Optical Phase Add/Drop for Format Conversion between DQPSK and DPSK

Guo-Wei Lu, Tetsuya Miyasaki / NICT, Japan

Experimental demonstration of an optical phase add/drop scheme to enable the format conversion between 20 Gbps DQPSK and 10 Gbps DPSK.

Advanced applications over Optical Networks such as grid, on-demand services and cluster computing

OMO2 Impact of OBS and TCP Parameters on Instantaneous Behavior of TCP Congestion Window on LOBS Network Testbed

Asif Nawaz, X. B. Hong, J. Wu, J. T. Lin/ Beijing University of Post and Telegraph, China

Impact of OBS and TCP parameters on the instantaneous behavior of TCP congestion window. Experiment on LOBS testbed. Simulations as well.

OMO3 Survivable Logical Topology Design for Distributed Computing in WDM Networks

Xiang Yu, Chunming Qiao, Ting Wang, Xin Liu/ SUNY Buffalo and NEC Labs America

Logical topology design for a distributed computing application over a WDM optical network. The logical topology designed through both MLP and heuristic is able to survive one computing clusture failure and one link failure

Advanced Optical Network Infrastructure– Contd.Code Title Author/Affiliate Topic Trends

OMO4

Experimental Demonstration of SIP and P2P Hybrid Architectures for Consumer Grids on OBS Testbed

Lei Liu et al./Beijing University of Post and Telegraph, China

Three types of SIP and P2P hybrid architectures are proposed for consumer grids. Their feasibility, scalability and efficiency are experimented on an OBS testbed. Advanced

applications over Optical Networks such as grid, on-demand services and cluster computing

OMO5GENI: Overview and Plans

Kristin Rauschenbach/ BBN Technoligies

Global Environment for Network Innovations; research infrastructure being planned and prototyped via NSF sponsorship

OMO6

Slice Provisioning in a Virtualized Optical Substrate Network with Programmable Routers and ROADM

Wei Wei et al./ NEC Labs America

Creation of virtualized networks on demand (slice) over an existing base topology with programmable routers and ROADMs; shows variability of slice blocking ratio with slice requests

Optical Network Architecture

Code Title Author/Affiliate Topic Trends

OMQ1

Optical Communication Challenges for Future Internet Design

Darleen Fisher/ National Science Foundation

Challenges the optical research community to explore secure, robust, and flexible future networks.

Optical Network Architectures for the future internet

OMQ2

Embedding Optical Ethernet Services within the Path Computation Element Framework: The 100GET Approach

Mohit Chamania, et al./Collaboration between Technische Universität Carolo and Nokia Siemens Nw.

Inter-domain optical service provisioning in carrier-grade Ethernet. Proposition of multi-layer PCE based control-plane architecture.

OMQ3

Reach Optimized Architecture for Multi-rate Transport System (ROAMTS): One Size Does Not Fit All

Ashwin Gumaste and Nasir Ghani/ IIT Bombay and UNM

“one size does not fit all” philosophy. Concept of variable channel spacing in a multiple line rate scenario is presented.

Optical Network Architecture – Contd.


OMQ4

Reach Dependent Capacity in Optical Networks Enabled by OFDM

Adriana Bocoi et al./ Collaborative work between NSN,Technische Universität München and Technische Universität Berlin

Use of OFDM modulation scheme increases the capacity of some links which are shorter than the maximum transparent reach of the data rate.


OMQ5Throughput-Cost Analysis of Optical Flow Switching

Guy Weichenberg et al./ MIT

(Vincent Chan’s Group)

Presents the throughput-cost tradeoff offered by Optical Flow Switching. It shows that OFS is the most scalable architecture of all compared to traditional architectures.

OMQ6TCP Performance Analysis of Grid over OBS Networks

Shuping Peng et al./ Peking University, China

TCP performance is analyzed in Grid over OBS network with the high bandwidth-delay product scenario.

Code Title Author/ Affiliate

Topic Trend

OMQ7

Light-Mesh: An Evolutionary Approach to Optical Packet Transport in Access Networks

Ashwin Gumaste et al./Collaboration between IIT Bombay and UNM

Presents optical packet transport as a solution for the access area. An alternative technology to PON, called Light Mesh is presented.


Optical Network Architecture – Contd.

Impairment-Aware NetworkingCode Title Author/Affiliate Topic Trends

OWI1

An Offline Impairment-Aware RWA Algorithm with Dedicated Path Protection Consideration

Shiamak Azodolmolky et al./collaboration between Technical University of Catalonia and AIT

Offline impairment aware RWA for all-optical networks while considering dedicated path protection.

Handling physical impairments in high-speed all-optical networks; impairment-aware routing and survivability

Mixed Line Rate

OWI2

Performance of Impairment Aware End-to-End Failure Recovery in Transparent WDM Optical Networks

Chava Vijaya Saradhi et al./ Creat-Net, Italy

Studies the performance of end-to-end restoration mechanism under single failure model considering PLIs for both link and node failures

OWI3

Impact of Topology and Traffic on Physical Layer Monitoring in Transparent Networks

Dan Kilper et al./ Bell Labs, Alcatel-Lucent

On optimized placement of optical performance monitors. Role of topology and traffic patterns in the optimized placement is investigated

Impairment-Aware Networking – Contd.Code Title Author/

AffiliateTopic

OWI4

Power Excursion Aware Routing in GMPLS-based WSONs

FMV Ramos et al./ University of Cambridge, UK

A routing scheme is proposed for GMPLS based WSONs to mitigate the effects of power transients due to WDM link failures. Handling

physical impairments in high-speed all-optical networks; impairment-aware routing and survivability

Mixed Line Rate

OWI5

Signaling and Multi-layer Probe-based Schemes for guaranteeing QoT in GMPLS Transparent Networks

N. Sambo et al. / Scuola Superiore Sant’Anna, Pisa, Italy

Multi-layer lightpath set up schemes based on probe traffic measurements are proposed for guaranteeing the required QoT in control plane enabled transparent networks. Multy-layer performance information allows to apply different SLAs to different service classes.

OWI6

Interest of an adaptive margin for the Quality of Transmission estimation for lightpath establishment

Florence Leplingard et al. / Alcatel-Lucent R&D, France

Shows that using a margin adapted to the lightpath characteristics, the number of mis-estimations on the prediction of the feasibility of a connection is reduced compared to the case where a fixed margin is used.

Impairment-Aware Networking – Contd.Code Title Author/ Affiliate Topic Trends

OWI7

Transparent vs. Translucent Optical Network Design with Mixed Line Rates

Avishek Nag and Massimo Tornatore / Univ. of California Davis

Tradeoff between a transparent (regenerator free) mixed line rate optical network design versus a translucent case i.e. with regenerators.

Handling physical impairments in high-speed all-optical networks; impairment-aware routing and survivability

Mixed Line Rate

Traffic Aggregation and SchedulingCode Title Author/Affiliate Topic Trends

OThO1

Multi-class Flow Aggregation for IPTV Program Delivery in Multicast Optical Backbone Networks

Yi Zhou and Jason Jue/ UT Dallas

Proposes multi-class IP flow aggregation to guarantee that the secured programs are only received by edge nodes which subscribe to them.

Traffic aggregation

Network coding

OThO2

Highly Survivable Restoration Scheme Employing Optical Bandwidth Squeezing in Spectrum-Sliced Elastic Optical Path (SLICE) Network

Yoshiaki Sone et al./ NTT, Japan

Proposes a novel restoration scheme in the spectrum-sliced elastic optical network. The proposed scheme achieves a high level of survivability for the traffic that is subject to the committed service profile.

OThO3

Network Coding and Its Implications on Optical Networking

Minkyu Kim et al./ MIT

Network coding allows for minimum-cost multicast that is fault-tolerant.

Traffic Aggregation and Scheduling–Contd.Code Title Author/Affiliate Topic

OThO4

Routing and Horizon Scheduling for Time-Shift Advance Reservation

Ankitkumar N. Patel et al./ UT Dallas

Optimal routing and horizon scheduling algorithm for Time-Shift Advance Reservation.

Traffic aggregation

Network coding

OThO5

Integrated Design for Sliding Scheduled Traffic in WDM Networks

Dragos Andrei et al./ collaboration between UC Davis and Shih Hsin Univ. Taiwan

A scalable network design method based on Lagrangean relaxation technique for sliding scheduled traffic.

OThO6

Overflow Traffic Modeling in Hybrid Optical Circuit/Burst Switching Nodes with Service Differentiation

Pratibha Menon et al. / collaboration between univ. of Pittsburgh and Univ. of Bologna, Italy

Proposes a model for a hybrid optical burst/circuit switching node, where overflow traffic from optical circuits is forwarded through burst-switched channels.

Traffic Aggregation and Scheduling–Contd.Code Title Author/ Affiliate Topic

OThO7

Routing and Scheduling for Variable Bandwidth Advance Reservation in Elastic Applications

Ankitkumar N. Patel et al./ UT Dallas

Introduces a heuristic for the routing and scheduling problem in variable bandwidth advance reservation. The proposed heuristic minimizes latency for each request and reduces request blocking significantly compared to traditional circuit switching approaches.

Traffic aggregation

Network coding

Network ElementsCode Title Author/Affiliate Topic Trends

OThJ1

Agile Photonics Architectures Enabled by New Modulation Formats and DSP

David Boertjes / Nortel

Filter technologies, and new ROADM architectures have been explored which take advantage of the increased tolerance to filtering effects.Coherent detection will allow filter-less add/drop architectures.

Evolution of network elements and devices to support high-speed networking

OThJ2

CD-Insensitive PMD Monitoring of an 80-Gb/s Polarization-Multiplexed RZ-DPSK Channel Using a Polarizer and a Low-Speed Detector

J.-Y. Yang et al./ collaboration between USC, Telcordia and Cisco

Experimental demonstration of a PMD monitoring technique utilizing the polarizer and low-speed detector for 80-Gb/s pol-muxed RZ-DPSK.

OThJ3

Dependence of the Transmission Impairment on the WSS Port Isolation Spectral Profile in 50GHz ROADM Networks with 43Gb/s NRZ-ADPSK Signals

Brandon C. Collings et al./ Nortel

50GHz WSS port isolation spectral profile impairs the performance of 43Gb/s NRZ-ADPSK wavelengths and >10dB of isolation is needed at the center of the channel relative to the edges.

Network Elements


OThJ4 Towards Real-Time Implementation of Coherent Optical Communication

T. Pfau et al./ Univ. of Paderborn, Germany

Outline of the hardware architecture of coherent optical receivers supporting >40 Gb/s data rates.A chipset layout for a 40 Gb/s digital coherent polarization-multiplexed QPSK receiver is presented.

Evolution of network elements and devices to support high-speed networkingOThJ5 Multiple-Impairment

Monitoring Technique Using Optical Field Detection and Asynchronous Delay-Tap Sampling Method

H. Y. Choi et al./Korea Advanced Institute of Sc. and Tech.

A new monitoring technique based on the homodyne detection and the asynchronous delay-tap sampling method.The proposed technique can monitor the multiple impairments of the optical signal, regardless of its modulation format, by evaluating both the amplitude

and phase distributions.

Network ElementsCode Title Author/Affiliate Topic Trends

OThJ6 WDM-to-OTDM Traffic Grooming by means of Asynchronous Retiming

George Zarris et al./ Univ. of Essex, Univ. of Karlsruhe and Univ. College Cork collaboration

Experimental investigation of data protocol transparent 3x43Gb/s to 129Gb/s WDM to-OTDM conversion based on an asynchronous retiming scheme, for buffer-less OTDM traffic grooming.

Evolution of network elements and devices to support high-speed networking

Converged Ethernet NetworksCode Title Author/Affiliate Topic Trends

NTuA1 Managing the Convergence of Carrier Ethernet with Optical Transport

Ronald A. Skoog/ Telcordia

Carrier Ethernet and Connection-Oriented Packet Switching are being merged with optical technology to form a converged solution involving Packet Optical Transport Platforms.

Migration of legacy network structures towards converged ethernet networksNTuA2 Proposal of High

Stable Clock Recovery Method Based on Queuing-Delay Measurement Scheme for TDM PWE3 over PSN

Masaki Umayabashi et al./ NEC Labs Japan

This proposes a clock recovery method with packet filter based on a new queuing-delay measurement scheme using the fluctuation monitoring of buffer depth

Converged Ethernet NetworksCode Title Author/Affiliate Topic Trends

NTuA3 Demonstration of An Optical OFDMA Metro Ring Network with Dynamic Sub-carrier Allocation

Wei Wei et al./ collaboration between NEC labs America, AT&T Labs and SUNY Buffalo

A novel optical OFDMA ring network with an adaptive sub-carrier allocation algorithm, which utilizes queuing length and traffic characteristics to effectively support multicasting and real-time traffic flows.

Migration of legacy network structures towards converged ethernet networks

NTuA4 The Continuing Evolution of Ethernet

John D’Ambrosia/ Force10 Networks

An overview and review the progress of the IEEE P802.3ba 40Gb/s and 100Gb/s Ethernet project.

Ethernet and High-Speed SystemsCode Title Author/Affiliate Topic Trends

NThA2 The Deployment and Operation of Fiber to the Cell Site

Benjamin Parker/ Verizon

Migration from 2.5 and 3G wireless technologies to 4G systems requires large bandwidth at call sites. So there are initiatives to deploy fiber at the Cell Site. This would provide increased bandwidth, improved reliability and survivability to 4G networks.

Migration towards high capacity for bandwidth hungry applications

NThA3 Adaptive Delay-Difference Compensation based on Peer Detection for 40-Gb/s/ch Optical Virtual Concatenation

Yongmei Sun et al./NTT labs, Japan

An adaptive delay-difference compensation scheme for 40-Gb/s/ch optical virtual concatenation is proposed. Rapid adaptive compensation with high accuracy is demonstrated.

Ethernet and High-Speed SystemsCode Title Author/Affiliate Topic Trends

NThA4 100Gb/s 10km Link Performance of 10x10Gb/s Hybrid Approach with Integrated WDM Array of DFB Lasers

Thomas Schrans et al./ Santur Corporation

A 100Gb/s 10km link using hybrid packaging containing a monolithic WDM array of DFBs a PLC based optical MUX, an array of PDs and TIAs , and a PLC based optical DeMUX is demonstrated.

Migration towards high capacity for bandwidth hungry applications

Efficient Network DesignsCode Title Author/Affiliate Topic Trends

NThE1 Cross-layer Reconfiguration for Surviving Multiple-link Failures in Backbone Networks

Ajay Todimala et al./ AT&T Labs

Studies a protocol to reconfigure impacted backup paths after a link failure, improving survivability from a subsequent failure.

Cost-effective Network design by optimizing several network parameters along different layers

NThE2 End-to-end network architecture choices for future economically viable networks

Andrew Lord et al./ British Telecom

This paper examines two alternative end-to-end network architectures, one with an all-optical circuit-switched dynamic core together with cheap, fixed metro, and the other with a core comprising fixed point-to-point pipes with a dynamic metro.


NThE3 Service Oriented Optical Network architecture

F. Baroncelli et al./collaboration between Scuola Superiore Sant’Anna and CNIT, Pisa, Italy

A Service Oriented Optical Network (SOON) architecture for Control Plane enabled transport network is described and assessed. The relevant Service Plane is also described in terms of functional blocks and interfaces.


NThE4 Impairment-Aware WDM Network Dimensioning with Optimized Regenerator Placement

Kostas Katrinis et al./ Athens Information Technology, Greece.

This paper focuses on WDM networks employing selective regeneration and studies jointly the network design and regeneration placement considering the physical network performance. Simulation results show substantial savings in regenerator requirements compared to existing approaches.


NThE5 Sub-Wavelength Traffic on an Optical Network

Lyn Ostar/ AT&T Labs

Traditional wavelength services are now below the DWDM wavelength rate. Analysis of AT&T’s 2.5G sub-wavelength services on a nationwide optical network gives insight to how services should be supported at 40Gb/s and 100Gb/s.


Post-Deadline PapersCode Title Author/Affiliate Topic Trends

PDPD1

Omnipresent Ethernet: A Novel Metro Communication System Using Binary+Source Routing and Carrier Ethernet

Saurab Mehta, Raviraj

Vaishampayan, Ashwin A.

Gumaste / IIT Bombay

Omnipresent Ethernet ‐ by using binary and source routing embedded in Carrier Ethernet-- a method for providing end‐to‐end communication in metro networks

Omnipresent ethernet + mixed line rate

PDPD2

Optical Network Design with Mixed Line Rates and Multiple Modulation Formats

Avishek Nag, Massimo

Tornatore,

Biswanath Mukherjee / UC

Davis

MLR network design employing hybrid transmission systems--tradeoff between a transceiver’s cost and its optical reach in overall network design

PDPD3

Optimizing the Migration of Channels with Higher Bit‐Rates

Clara Meusburger, Dominic A.

Schupke/ Nokia Siemens Networks

Incremental versus all-period planning of a network which migrates from a low bit-rate (10G) to a high bit-rate (40G)

Conclusion Trends

Advanced optical network infrastructures for the future internet Emerging applications over optical networks: grids, cloud

computing etc. IP/optical integration Optical Ethernet/ end-to-end Ethernet 100G and associated issues: network elements, subsystems,

modulation formats and impairment-awareness Energy-aware networking

OFC’09 Summary ---Core Networks Part I Avishek Nag.

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