The Network Meets the Cloud

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1 Università degli Studi di Roma «Tor Vergata» CNIT GTTI 2014 The Network Meets the Cloud Stefano Salsano Univ. of Rome Tor Vergata/ CNIT

2 Outlook Cloud computing rules the world Cloud, Virtualization & SDN: changing the game in networking R&D Open sourcing From simulation to emulation 2

3 Choose one The Network Meets the Cloud The Cloud Eats the Network 3

4 Cloud computing rules the world Software Is Eating The World Cloud computing dominates software from CISCO Global Cloud Index (GCI) 4

5 Worldwide IT Spending 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Data center systems Enterprise software IT Services Telecom Services 2,60% 6,80% 4,50% 1,20% Annual growth rate (2014) Source: Gartner 5

6 Worldwide IT Spending 100% 90% 80% 70% 60% 50% 40% 30% Data center systems Enterprise software IT Services Telecom Services 20% 10% 0% My own elaboration of Gartner s data 6

7 Worldwide IT Spending trillion $ IT services+ enterprise + data center Telecom Services My own elaboration of Gartner s data 7

8 Whathappenedwith circuitvs. packetswitchigfor Voice Telecom Italia aggregate backbone traffic 8

9 New network (whereisthe network?) Data center 9

10 References Why Software Is Eating The World Marc Andreessen Software will eat the Network Antonio Manzalini Gartner Says Worldwide IT Spending on Pace to Reach $3.8 Trillion in 2014 STAMFORD, Conn., January 6, Cisco Global Cloud Index: Forecast and Methodology,

11 Cloud, Virtualization & SDN changing the game in networking R&D SDN: centralization of control logic (from switch/routers to controllers /network OS) Virtualization remotization of computing resources capability to replicate/emulate realistic environment in synthetic setups 11

12 Impacts on R&D Cloud computing, Virtualization & SDN impact on production networks and services (as seen previously ) They also change the way in which network and services can be designed / prototyped / tested 12

13 Programming with SDN Using SDN concepts it is easier to build new services and features 1. programming a controller is easier than programming a node -> network Oss 2. nodes are not open (typically) SDN APIs are (should be) open 13

14 Virtualization With virtualization/cloud we have a powerful platform to emulate network behavior with a realistic(large) scale With virtualization (slicing) we could run different separate logical networks 14

15 DREAMER Project Distributed REsilient sdn Architecture MEeting carrier grade Requirements Main goal: Design a carrier grade IP backbone based on OpenFlow/SDNand experiment with its prototype on GÉANT testbed 15

16 Emulation on large scale testbeds Overlay Experimental Topology VMs and Tunneling VM servers Physical OF switches How to map an arbitrarytopology on a set of VM servers and links, with minimal configuration effort? Physical OFELIA testbed 11

17 Emulation on large scale testbeds Overlay Nodes VMs Overlay Links Ethernet over UDP tunnels 12

18 References DREAMER project home page: Home page of OSHI Code from GitHub see Software download section 17

19 Open source In IT/Software domain there is a long tradition of large scale community driven Open Source projects (Linux, Apache, Mozilla, OpenStack ) How this will work in networking? We re now seeing conversion of vendors to Open Source Open Source controllers war / OpenDayLight 19

20 Evolution of scientific work Simulation used to be the main tool to complement analytical models Existing simulation tools (ns3, opnet ) or custom-made simulator Replication of results is always difficult, even when source code is published 20

21 Evolution of scientific work Use emulation rather than simulation Replication of results is always difficult, even when source code is published

22 Evolution of scientific work Use emulation rather than simulation Publish a Virtual Machine with everything setup for your experiment: 1. Open source the code 2. Provide a VM image (e.g. a VirtualBoximage) 22

23 Thank you! (questions) 19

24 UNIVERSITY OF ROME TOR VERGATA Department of Electronics Engineering Via del Politecnico, Rome-Italy Stefano Salsano, Ph. D. Assistant professor Phone: Fax:

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