ns-3 Premier

3 October 2008 EKC 1

ns-3 Premier

Egemen Çetinkaya

Department of Electrical Engineering & Computer Science

The University of Kansas

[email protected]

http://wiki.ittc.ku.edu/resilinets_wiki/index.php/Main_Page


Outline

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


Introduction1

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)


Introduction2

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


Introduction3

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 http://www.nsnam.org/wiki/index.php/NS-3_Python_Bindings


Introduction4

Roadmap can be found on the following link - http://www.nsnam.org/wiki/index.php/Roadmap

Releases are date driven, instead of feature or bug driven

There are already papers being published - http://www.nsnam.org/wiki/index.php/Papers


ns-2 vs. ns-3 Comparison1

First release: 1996 vs. 2008 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


ns-2 vs. ns-3 Comparison2

Scripting: OTcl vs. Python Visualization: nam vs. ns3-viz, pyviz, nam,

iNSpect ? (all under development) Scalability: sequential simulations vs. distributed

simulations


Model Comparison: ns-2 vs. ns-3Application 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


Model Comparison: ns-2 vs. ns-3Network

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


Model Comparison: ns-2 vs. ns-3Link and MAC

ARP, HDLC, GAF, MPLS, LDP

MAC: CSMA, 802.11b, 802.15.4, satellite Aloha

new 802.11 model, 802.11 variants (mesh, QoS), 802.16, TDMA, CDMA, GPRS, CSMA


Model Comparison: ns-2 vs. ns-3 Physical and Mobility

TwoWay,shadowing,Omni 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


References

ns-3 main page for documents, news etc.http://www.nsnam.org/ ns-3 wiki page roadmap, howtos, etc.http://www.nsnam.org/wiki/index.php/Main_Page ns-3 users grouphttp://groups.google.com/group/ns-3-users 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

ns-3 Premier

Documents

Transcript of ns-3 Premier