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Designing Future Networking Systems.

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Presentation on theme: "Designing Future Networking Systems."— Presentation transcript:

0 Designing Future Networking Systems Shaping Future Telecom Operators.
a project course by the members of detusche telekom laboratories

1 Designing Future Networking Systems.

2 Designing Future Networking Systems.

3 Designing Future Networking Systems
Designing Future Networking Systems. A Project Course by the Members of Deutsche Telekom Laboratories. Clean Slate Internet Design What are the current problems in internet architecture? What are the proposed solutions? What is the vision for future networking systems? Much more than Internet 2.0! Ubiquidous high-speed wireless access Secure host identification / Secure anonymization Robust routing and transport delivery Session management that works! Help us design the future Topics Application Layer Service Placement Transport Layer Host Identification Protocol (HIP) Adaptive Queue Management (AQM) Cross-layer TCP for wireless links Heterogenous Access Networks Routing Layer Probabilistic Routing Open Routers

4 Designing Future Networking Systems. Course Administration.
Course website Course administrator Martin Roth 12 weeks First 4 weeks introduction of concepts and technologies Next 7 weeks, project specific lectures, milestone meetings Last 1 week, final project presentation, demonstrations Final reports thereafter One report per project about 10 pages Technology review, implementation details, experience in English! Talk to us... Templates available Course Evaluation 70% Project 20% Presentations 10% Report

5 Application Layer.

6 Service deployment platforms by Evangelos Kotsovinos
Service deployment platforms allow users to obtain resources on machines they do not directly own or control (e.g. Grids, PlanetLab, Utility Computing) XenoServers are servers able to safely host and execute services provided by third parties (service providers) in exchange for money Services can be deployed on demand, acquiring computing resources dynamically Services may migrate on demand, based on changes e.g. in network conditions, geography of client demand, or pricing IBM, Sun, HP, Deutsche Telekom, sell or aim to sell similar facility Objectives Learning more about deployment technologies Comparing the different deployment approaches Discussing application scenarios for which each type of approach is more appropriate

7 Network Design

8 7 xCAT (Cross Capacity Analysis Tool). How can we prepare for 4G systems? Objective To study the challenges in the network planning of future communication systems (i.e. 4G networks) Cross system engineering The set of rules that define the cooperation and competition among the different access networks within a 4G system Tasks: To extend the current simulation tool and develop different optimisation algorithms Konzernentwicklung

9 7 xCAT (Cross Capacity Analysis Tool). How can we prepare for 4G systems? Relevance Future integrated operators will require rules to coordinate interactions among the different networks These interaction rules are strongly related to the business models These rules are an important element for self-optimised systems Self-optimised systems reduce network management and deployment costs for Deutsche Telekom Konzernentwicklung

10 Transport Layer.

11 TCP-FAT (Fast Adaptation Time)
TCP-FAT (Fast Adaptation Time). Impact of Mobility on the transport layer. Objectives To analyse the impact of vertical handovers on TCP connections To characterise the effects (adaptation delay component, Ta) To design techniques that reduce these effects To evaluate our proposal Tasks Experimental setup Collect traces Adapting existing scripts Working on a new definition for Ta Analysing the traces

12 TCP-FAT (Fast Adaptation Time)
TCP-FAT (Fast Adaptation Time). Impact of Mobility on the transport layer. Relevance TCP traffic represents % of the traffic in the Internet We need to support real-time services on the move We need to minimise delays (latency) everywhere A cross-layer solution that tackles mobility at different layers is needed to enable seamless networking Reducing handover latency (network layer) is not enough Reducing adaptation delay in vertical environments is fundamental for future mobile scenarios

13 Efficient Scheduling across air-interfaces
Multiple Interfaces: allows advantages of technology diversity. WLAN : high bandwidth (but low mobility) Cellular: intermediate mobility support (but low bandwidth) Simple bandwidth sharing can lead to low throughput and waste network resources Wireless Access via WiFi, cellular satellite solutions

14 An Integrated Approach for TCP Throughput Optimization
Model TCP’s congestion control dynamics and overlay an optimization framework Using Dynamic Programming (DP) principles, evaluate optimal throughput for a bulk transfer TCP flow Investigate Link/PHY layer adaptation for throughput optimization, via Power control: crucial and usually indispensable for wireless networks Link Adaptation: Proven merits (e.g. WLANs, n, proposals, EGPRS)

15 Resiliency Measures for a Tree-based Overlay Structure

16 SOUND-NET. Unveiling User’s Perception of Future Communications.
19% SOUND-NET. Unveiling User’s Perception of Future Communications. Objectives To asses user experience in future 4G networks To design mobility tests (targeting VoIP) To evaluate the scenarios To extend the e-model for Handover, technology switching, NB  WB, etc Extract the appropriate planning information

17 SOUND-NET. Unveiling User’s Perception of Future Communications.
19% SOUND-NET. Unveiling User’s Perception of Future Communications. Relevance Seamless mobility does not mean zero-disruptions Always-best-connected needs to be evaluated We need to know how the user may perceive seamless services We need to know users’ perspective in order to design future services and supporting resources

18 Host Identification Protocol (HIP). Supporting secure mobility
Background Host Identification Protocol (, is considered to be the next big thing in the Mobile Internet landscape as it combines mobility management elegantly with security, in particular, authentication and encryption. It provides methods of separating the end-point identifier and locator roles of IP addresses, as well as introduces a new name space, Host Identity, based on the public keys system. Project outline In this project, the aim is to firstly survey existing publicly available experimental HIP implementations and secondly gain unique hands-on experiences in setting up HIP in heterogeneous networks environments. Tasks You will be given a unique opportunity to setup a test-bed environment capable of switching an incoming music streams between any IP enabled devices using different access technologies.

19 Routing Layer.

20 Wireless Mesh Networks
Wireless, infrastructure-based mesh networks promise Fast deployment Cheap deployment (compared to fiber) High data rates (scalable) Various use scenarios Developing countries (China, India): an infrastructure Well-connected countries (Korea): ubiquitous access Possible deployments in Berlin/ Germany Biergarten, Coffee shops, shopping areas Parks (Tierpark, lakes around Berlin) Neighborhoods (garden, common grounds, East-Berlin) Ski stations WiFi mesh Internet Konzernentwicklung

21 Open Source in the Context of Routing Platforms
Why is it of interest? Research community: Allow real-world experimentation and evaluation of network protocols Enable the development of router applications Facilitate novel designs in network element and protocol stack architecture Act as a way to avoid Internet ossification – provide a path for adoption and deployments Operator community: Decrease TCO for network equipment Enhance interoperability among network elements from different equipment vendors Avoid network equipment vendor lock-in Decrease time-to-market for new network services, bug fixes, etc. The multiple layers of “openness” Open platforms: provide clear and well-defined interfaces (programming abstractions) for developing and integrating new protocols and system components (e.g. management interfaces, schedulers, forwarding paths, etc.) Open protocol stacks: expose the internals of network protocols allowing the development of new features, extensions and modifications Open device drivers: usually enable modifications and tweaking with the link-layer and medium access layer of the network access technology Open hardware: make available the details of the reference design and the hardware abstraction layer, allowing arbitrary ways of accessing the underlying hardware Konzernentwicklung

22 Node Hardware RouterBoard from
Fast main board in small-form-factor MIPS 32 4Kc based 266MHz 64/128Mb RAM, 1Mbit for boot-loader 3-8 Ethernet 10/100Mbits cards, PoE One serial RS232c port For Magnets II CompactFlash cards (2Gb max) for trace collection MiniPCI bus: 2-6 slots for MiniPCI devices: Up to 6 cards: WiFi, GSM, UMTS, Bluetooth, Zigbee, later WiMAX Open-source Linux platform Linux 2.4, patch for bootloader included Konzernentwicklung

23 Probabilistic Routing. by Martin Roth
Traditional Routing is Deterministic Link-State (Bellman-Ford) Distance Vector (Dijkstra) Paths are Brittle Explicit Multipath Routing is necessary for Robustness Network (Re)configuration is Expensive Lots of Control Traffic Overhead is required Isn‘t There a Better Way? Probabilistic Routing! Generate a probability distribution over every path in the network Route according to path utility

24 Swarm Intelligence. Biologically Inspired.

25 Questions? Fragen? Martin Roth
Pablo Vidales Jatinder Pal Singh Students Sebastian Rafael Niklas

26 Host Identity Protocol (HIP)
Robert Hsieh 26th April 2006 Konzernentwicklung

27 Background of the origin of HIP
IP Address serve the duel role of being End Point Identifiers Names of network interfaces on hosts Locators Names of naming topological locations This duality makes thing very hard!! IRTF Name Space Research Group debates for years without reaching consensus Konzernentwicklung

28 HIP in a Nutshell Integrates security, mobility and multi-homing
Opportunistic host-to-host IPSec ESP End-host mobility across IPv4 and IPv6 End-host multi-address multi-homing across IPv4 and IPv6 IPv4 and IPv6 interoperability for apps A new layer between IP and Transport layers Introduces Cryptographic Host Identifiers

29 The HIP Project Survey existing publicly available HIP implementations
Install and test the various HIP implementations for comparison Select one HIP implementation and design various demonstration scenarios to showcase its capability and possible drawbacks

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