NOBEL Kick-Off Meeting

1. NOBEL Kick-Off Meeting CR3 Alcatel CIT Contributions WP2 Turin, 10.-12.02.04 NOBEL Plenary Feb. 10 1

2. Contacts @ Alcatel CIT(Partner CR 3) • WP1 & overall coordination : Claude Artigue@alcatel.fr • WP2 : Nicolas.Le_Sauze@alcatel.fr • WP3 : Dominique.Chiaroni@alcatel.fr • WP4 : Bela.Berde@alcatel.fr , • WP5 : Olivier.Leclerc@alcatel.fr • WP6 : Nathalie.Charton@alcatel.fr • WP7 : / • WP8 : / NOBEL Plenary Feb. 10 2

3. CR3 Alcatel CIT WP2 List of WP objectives to which you are contributing (cf. Chapter 8.6 of Technical Annex for WP objectives) Survivability, TE, techno- and socio-economic studies and evaluations • Survavibility cases studies :protection/resiliency in multilayer networks ; efficient resilience strategies in multi-layer/domain/service networks (such as optical restoration/protection, MPLS Fast Reroute, etc.) and their interworking. In particular : advanced protection / restoration strategies, multi-service resilience, multi-layer resilience, optimised share between client layer and optical layer resilience, layer inter-working; resilience control protocols, Inter-domain resilience • Traffic engineering :Measurement, characterization and modelling of (aggregated) traffic and development of generator models describing users.To study traffic/network engineering solutions to optimise utilisation of network resources, QoS assurance and congestions avoidance. new methods for route management (intra- and inter-domain), so that the QoS performance figures are taken into account in the routing decisions.To develop accurate statistical models for evaluating the impact on QoS of the traffic generated by the end-to-end broadband services for all. • Techno-economical studies :efficient network solutions and evaluate their economic viability considering. Focus on operations, maintenance and provisioning ; to develop advanced network planning techniques in order to support strategic decisions (taking into account e.g. uncertainty in traffic volume and pattern, cost evolutions) and cost evaluations ; to define near, mid and long term migration scenarios based on the results of different WPs, cost trends, technology availability and so on. • CR3 CIT Manpower for WP2 : 25 MM NOBEL Plenary Feb. 10 3

4. CR3 Alcatel CIT WP2 List of WP activities to which you are contributing (cf. Chapter 9.1 of Technical Annex for WP activities) • WP2, A2.1 (Investigation of advanced survivability ) • for multi-service / multi-layer / multi-domain networks • ACIT Manpower: 3 MM • WP2, A2.2 (Study of traffic engineering concepts) • for end-to-end broadband services for all • ACIT Manpower: 18 MM • WP2, A2.3 (Techno-economic analysis) • network solutions and evaluation of their economic viability • ACIT Manpower: 4 MM, • WP2, A2.4 (Socio-economic feasibility studies) • investigating and assessing new social and economic opportunities • ACIT Manpower: 0 MM, • WP2, A2.5 (Definition and assessment of different business models) • for the solutions proposed by NOBEL • ACIT Manpower: 0 MM, NOBEL Plenary Feb. 10 4

5. CR3 Alcatel CIT WP2 List of WP deliverables to which you are contributing as defined in the list of NOBEL deliverables • D15: “Preliminary report on advanced network planning techniques and business case migration scenarios” (M14) • xxx • ACIT Manpower: 5 MM • D17: “Preliminary report on new methods for route management (intra- and inter-domain), and accurate statistical models for evaluating the impact on QoS” (M15) • xxx • ACIT Manpower: 10 MM • D27: “Final report on Traffic Engineering & resilience strategies for NOBEL solutions” (M22) • xxx • ACIT Manpower: 10 MM NOBEL Plenary Feb. 10 5

6. CR3 Alcatel CIT Backup slides ----------------------- WP2 : Techno-economic Evaluation and Social Impact Contact for WP1 : Nicolas.Le_Sauze @alcatel.fr NOBEL Plenary Feb. 10 6

7. WP2 / CR3 / Alcatel CITTraffic Engineering • Focus on Distributed Dynamic Traffic Engineering • Advanced path calculation • Work on optimal algorithm (performance) • Study multi-criteria routing algorithm • Load balancing • work to define Load Balancing mechanisms • technical challenge to master network stability and scalability issues NOBEL Plenary Feb. 10 7

8. WP2 / CR3 / Alcatel CITMetro-network vision (1) • Multiple Topologies / Traffic Distribution • Multiservice / Multiple Access technologies NOBEL Plenary Feb. 10 8

9. WP2 / CR3 / Alcatel CITMetro-Network vision (2) • Metro-core region: • Meshed traffic over meshed or ring topologies • Need for capacity, less flexibility (aggregation already performed in metro-access) • Technology: SONET/SDH and/or optical circuits may be sufficient? • Metro-access region: • Hub-spoke topology • Need to follow capacity and burstiness increase of Broadband access networks • Technology: Ethernet for low cost perspectives, low cost optics for capacity • Metro Access is our first interest: Find the optimum solution to aggregate the traffic from access networks and benchmark it with more classical approaches NOBEL Plenary Feb. 10 9

10. WP2 / CR3 / Alcatel CITMetro Access Requirements • Traffic and access rate increase resulting in capacity bottleneck • Multiple services/ Multiple-protocols over a single architecture • Incl. Legacy traffic, TLS, Video services (VoD, Broadcast), Broadband Internet Access,… • Carrier-class performance and resilience required • CAPEX and OPEX wanted “Hubbed” traffic mainly NOBEL Plenary Feb. 10 10

11. WP2 / CR3 / Alcatel CITOn Traffic aggregation in metro access • Full E2E circuit Vs “Hubbed” circuits Vs full Packet-based architecture • Assumptions • 8-node ring network w/ 1+1 protection • 85Gbit/s capacityover uniformnodes • 20% of intra-ring traffic, • Add/drop symmetry • Full packet architecturesupposes spatial re-use, but hubbed packet architectureis similar w/ few intra-ring All SDH155Mbit/s vs. 10GEth : Hubbed TDM 2.5Gbit/s vs. 10GEth : +166% +83% +100% +67% w/ increasing access rates, hubbed TDM solution and ring packet aggregation make sense NOBEL Plenary Feb. 10 11

12. WP2 / CR3 / Alcatel CITDrivers for new solutions in metro-access • Passive optical technology • Extension of PON technology: Mature & low-cost optics -> reduced CAPEX • High MTBF/Easy maintenance -> reduced OPEX • Scalability potentials through WDM • Ethernet technology in data plane • Low cost potentials • Existing Interworking Units with legacy networks • Evolution towards Carrier-class features (Ethernet Services Definitions @ MEF, L2-LSPs @ IETF, …) • Topology definition • As in PONs, Dual Bus logical topology (upstream/dowsntream isolation) • BUT, with a physical ring topology for • Re-use installed fibers • Classical protection mechanisms • MAC protocol efficiency (Packet-based Architectures only) NOBEL Plenary Feb. 10 12

13. METRO-CORE Upstream Downstream Eth. Switch/Router Metro-Core Node PON ring Metro-access Eth. Switch/RouterEdge Node PON access xDSL access WP2 / CR3 / Alcatel CITPassive Optical Ring Metro-access architecture • 2 contra-rotating fibers for protection • 20-40 km perimeter • One hub node responsible for the metro core interconnection • No fundamental issue for Dual Homming? • Typically 4-10 edge nodes with a passive coupling onto the 2 fibers • Interconnection with different access network types • Spectral separation of Upstream and downstream Flows • Shared Broadcast downstream wavelengths (could be unshared) • Unshared (l-service)or Shared (packet-service) upstream wavelengths NOBEL Plenary Feb. 10 13

14. WP2 / CR3 / Alcatel CITThe Dynamic Flow SimulatorObjectives of the simulation platform • To dimension network resources • to validate protocols and algorithms (routing, wavelength/band assignment, path establishment) • to assess the efficiency and scalability of the control plane • to compare networking solutions (cost, performance) • technologies and systems (packet Vs circuit, Wlgth/Band/Fiber) • architectures (ring, mesh, metro, backbone) • network models (peer, overlay, …), • restoration, protection strategies, • Traffic Engineering approaches, NOBEL Plenary Feb. 10 14

15. WP2 / CR3 / Alcatel CITRequirements on the simulation platform Not available in commercial tools (Dynamics ==> packet granularity ==> Not scalable) • To be able to cope with network dynamics • traffic (time, space, type) • “life” of the network: failures and protection, upgrades • To efficiently scale with respect to a number of parameters • capacity (terabit) • spatial (large numbers of nodes, connections,…), • time (day scale simulation). • To support a broad range of architectures • network topologies • node functionalities • transmission impairments • To take into account implementation constraints • realistic signaling (e.g. GMPLS-like semantic, delay) NOBEL Plenary Feb. 10 15

16. WP2 / CR3 / Alcatel CITSolution: The Dynamic Flow Simulator (DFS) • represent traffic distribution in a network by mean of flows • a flow is an intermediate entity between packet and the intrinsic switching granularities • it can model the traffic send by an application (voice, video, file transfer, HTTP,…) • it can model an aggregation of micro-flows (LAN output,…) • it can be specified by a set of parameters, modeling traffic behavior (duration, average throughput, burstiness,…-) • BUT the behavior at the packet level is implicit and NOT simulated > several order of magnitude less events beginning of the flow Representative parameters l, s,CoS Distributions for arrival, duration, destination end of the flow NOBEL Plenary Feb. 10 16

17. WP2 / CR3 / Alcatel CITTwo simulation phases • Scalability on Demand (SoD) dimension the network resources • successive flow arrivals are processed in the network (routing, allocation,…) • corresponding required resources are upgraded w/ respect to service, protocols or any design constraints • any optimization can be added at this step either “time consuming” optimization (topology optimization,…), point-and-click (VPN,…) constraints or anticipation of future way of networking • Real Time Behavior (RTB) “life” of the network(s) • utilization based on existing resources • application of survivability schemes and any Traffic Engineering mechanism (dynamic provisioning, “intelligent routing”, dynamic grooming, load balancing, traffic partitioning, congestion control, signaling protocols, …) NOBEL Plenary Feb. 10 17