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

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

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Designing Future Networking Systems.

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Designing Future Networking Systems.

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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

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Designing Future Networking Systems.Course Administration.

•Course website https://www.dai-labor.de/index.php?id=580

•Course administrator Martin Roth [email protected]

•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

Application Layer.

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Service deployment platformsby 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, Amazon.com 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

Network Design

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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

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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

Transport Layer.

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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

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TCP-FAT (Fast Adaptation Time).Impact of Mobility on the transport layer.

Relevance– TCP traffic represents 40--60% 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

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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

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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, 802.11n, 802.16 proposals, EGPRS)

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Resiliency Measures for a Tree-based Overlay Structure

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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

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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

servicesand supporting resources

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Host Identification Protocol (HIP).Supporting secure mobility

BackgroundHost Identification Protocol (http://www.ietf.org/html.charters/hip-charter.html), 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 outlineIn 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.TasksYou 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.

Routing Layer.

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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 accessPossible 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

Wireless Mesh Networks

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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

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RouterBoard from Mikrotik.com 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

Node Hardware

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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 Overheadis required

•Isn‘t There a Better Way?•Probabilistic Routing!

Generate a probability distributionover every path in the network

Route according to path utility

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Swarm Intelligence.Biologically Inspired.

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Questions?Fragen?

Martin Roth [email protected] Vidales [email protected]

Jatinder Pal Singh [email protected]

StudentsSebastian [email protected]

Rafael [email protected] [email protected]

Host Identity Protocol (HIP)

Robert Hsieh 26th April 2006

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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

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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

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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