1 ns-3 Premier Egemen Çetinkaya Department of Electrical Engineering & Computer Science The University of Kansas

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Presentation transcript:

1 ns-3 Premier Egemen Çetinkaya Department of Electrical Engineering & Computer Science The University of Kansas

2 Outline Introduction General comparison of ns-2 vs. ns-3 Model comparison of ns-2 vs. ns-3 References, links, documents

3 Introduction 1 ns-3 is a discrete event network simulator for Internet systems Targeted for research & education Community-oriented open source development Free and open source software Emphasis on layers 2-4 of the network stack Integration of open source tools/software and capability to simulate and emulate (e.g. tcpdump, Ethereal packet analysis)‏

4 Introduction 2 Can be installed on any platform e.g. desktop, server, on 32 or 64 bit architectures So far experience shows that installations are very easy (Ubuntu LTS, Fedora 9, Cygwin)‏ Installed latest release of ns-3, ns-3.2 to ITTC machines (lutetium and freestyle)‏ Planned to reuse many models in ns-2 ns-3 is not backward compatible, ns-2 scripts cannot be run in ns-3

5 Introduction 3 Customizable trace files ns-3 development so far focuses on the core feature development rather than the models No support for visualization yet, but saw bunch of threads on the subject Python bindings for ns-3 is a work in progress, and some limitations are know by developers

6 Introduction 4 Roadmap can be found on the following link - Releases are date driven, instead of feature or bug driven There are already papers being published -

7 ns-2 vs. ns-3 Comparison 1 First release: 1996 vs Based on: ns-1 & REAL simulator vs. ns-2, GTNets, YANS Architecture: OTcl & C++ vs. C++ & optional Phyton scripting Funded by: DARPA VINT,SAMAN & NSF CONSER vs. NSF CISE & INRIA Current support: Volunteers, USC ISI & Sourceforge vs. NSF, INRIA, GT, WashU & volunteers

8 ns-2 vs. ns-3 Comparison 2 Scripting: OTcl vs. Python Visualization: nam vs. ns3-viz, pyviz, nam, iNSpect ? (all under development)‏ Scalability: sequential simulations vs. distributed simulations

9 Model Comparison: ns-2 vs. ns-3 Application and Transport Ping, vat, telnet, FTP, multicast, FTP, probabilistic and trace- driven traffic gen., webcache TCP, UDP, SCTP, XCP, TFRC, RAP, RTP, Multicast: PGM, SRM, RLM, PLM Sockets-like API, P2P, traffic generator TCP stack emulation (Linux,BSD), DDCP, additional high speed TCP variants, UDP

10 Model Comparison: ns-2 vs. ns-3 Network Unicast: IP, MIP, DV, LS, IPinIP, SR, Multicast: SRM, MANET: AODV, DSR, DSDV, TORA, IMEP, Queuing: DiffServ, RED, WFQ, DropTail full IPv4 & IPv6 support, NAT, BGP, OSPF, RIP, IS-IS, PIM-SM, IGMP/MLD, static (Dijkstra) unicast, static multicast MANET: OLSR

11 Model Comparison: ns-2 vs. ns-3 Link and MAC ARP, HDLC, GAF, MPLS, LDP MAC: CSMA, b, , satellite Aloha new model, variants (mesh, QoS), , TDMA, CDMA, GPRS, CSMA

12 Model Comparison: ns-2 vs. ns-3 Physical and Mobility TwoWay,shadowing,O mni Antennas,Energy model Satellite repeater Many including bonn- motion tool IEEE 802 physical layers, Rayleigh and Rician fading channels, GSM, Jakes composite loss model, Friis, log- distance Hierarchical, Random direction, RWP, RW, ns-2 Scen-Gen

13 References ns-3 main page for documents, news etc. ns-3 wiki page roadmap, howtos, etc. ns-3 users group Thomas R. Henderson, Sumit Roy, Sally Floyd, George F. Riley, ns-3 project goals, ACM, Proceeding from the 2006 workshop on ns-2: the IP network, Pisa, Italy, 2006