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OPEN SOURCE NETWORK EMULATORS FOR LINUX

Here we going to present a list of network emulators which worked on Linux platform. Network emulation is a technique where the properties of an existing, planned and/or non-ideal network are simulated using emulation of specific routers and other network equipment, as opposed network simulation where simplified mathematical models of data sources, channels and protocols are applied. The aim is educational, to develop skills in configuring network equipment, or scientific, to in order to assess performance, predict the impact of change, or otherwise optimize technology decision-making.

Cloonix

The Cloonix network simulator provides a relatively easy-to-use graphical user interface. Cloonix recommends KVM to create virtual machines but it also supports other virtualization technologies. Cloonix provides a wide variety of pre-built file systems that can be used as virtual machines and provides simple instructions for creating other virtual machine root file systems. Cloonix has an active development team, who update the tool every two or three months and who are very responsive to user input.
URL: http://clownix.net
For more click here

CORE

Common Open Research Emulator (CORE) provides a GUI interface and uses the Network Namespaces functionality in Linux Containers (LXC) as a virtualization technology. This allows CORE to start up a large number of virtual machines quickly. CORE supports the simulation of fixed and mobile networks.
CORE will run on Linux and on FreeBSD. CORE is a fork of the IMUNES network simulator, and it adds some new functionality compared to IMUNES.
URL: http://cs.itd.nrl.navy.mil/work/core/index.php
For more click here

GNS3

GNS3 is a graphical network simulator focused mostly on supporting Cisco and Juniper software. GNS3 has a large user base, made up mostly of people studying for Cisco exams, and there is a lot of information freely available on the web about using GNS3 to simulate Cisco equipment. GNS3 can also be used to simulate a network composed exclusively of VirtualBox and/or Qemu virtual machines running open-source software. GNS3 provides a variety of prepared open-source virtual appliances, and users can create their own.
URL: http://www.gns3.net
For more click here

IMUNES

A team of researchers at the University of Zagreb developed the Integrated Multi-protocol Network Emulator/Simulator (IMUNES) for use as a network research tool. IMUNES runs on the FreeBSD operating system and uses the kernel-level network stack virtualization technology provided by FreeBSD.
IMUNES supports a graphical user interface. It appears to work well and offers good performance, even when running IMUNES on a FreeBSD system running in a VirtualBox virtual machine.
URL: http://www.imunes.tel.fer.hr/ or http://www.imunes.net
For more click here

Marionnet

Marionnet Linux network simulator emulator is called as “virtual network laboratory” on its website. It allows users to define, configure and run complex computer networks on a host computer. It can simulate an Ethernet network complete with computers, routers, hubs, switchs, cables, and more. Marionnet seems designed to be used as an education tool and has an attractive graphical user interface, and some sample practice lab configurations. Marionnet does not provide a user manual but the user interface is fairly intuitive.
URL: http://www.marionnet.org/EN/
.For more click here

Mininet

Mininet open-source network simulator running on an Apple iMacMininet is designed to support research in Software Defined Networking technologies. It uses Linux network namespaces as its virtualization technology to create virtual switches and virtual nodes. The web site indicates that the tool can support thousands of virtual nodes on a single operating system. Mininet is most useful to researchers who are building SDN controllers and need a tool to verify the behavior and performance of SDN controllers. Knowledge of the Python scripting language is very useful when using Mininet.
The Mininet project provides excellent documentation and, judging from the activity on the Mininet mailing list, the project is actively used by a large community of researchers.
URL: http://www.mininet.org
For more click here

Netkit

Netkit open source single-area OSPF pre-configured lab. Netkit is a command-line based simulation tool that uses user-mode Linux to create the virtual machines. A full Linux OS can run on each machine. It has good documentation and the project’s web site has a long list of interesting lab scenarios to practice, with documentation for each scenario. It also appears to be actively supported by a small community and was last updated in 2011.
URL: http://wiki.netkit.org
For more click here

Psimulator2

Psimulator Linux Open-Source Graphical Network Simulator. Psimulator2 is a basic graphical network simulator that may be used to demonstrate basic IP networking concepts to students. It is not a fully-functional simulator because only a small sub-set of normal networking functionality is supported on each emulated node. It will run on any system that supports Java; including Windows, Mac OS, and Linux. It offers the ability to “capture” and “play back” data traffic generated by the simulation. The packets are displayed on the GUI as envelopes that move through the network.
URL: http://code.google.com/p/psimulator/
For more click here

Virtualsquare

Virtualsquare is an interesting effort to create a virtual network tool. The developers are building their own tools to create virtual networks, instead of re-using tools available in the common Linux distributions. There are no prepared labs available so users will have to learn the tool before creating lab scenarios for themselves. The project is well documented. It looks like a research project and Linux kernel or programming skills may be required to fully appreciate it. Virtualsquare is also the source of the Virtual Distributed Ethernet (VDE) program. VDE is used in some of the other network simulation tools.
URL: http://wiki.virtualsquare.org/wiki/index.php/Main_Page

VNX and VNUML

VNX linux open-source network simulator. VNX supports two different virtualization techniques and uses an XML-style scripting language to define the virtual network. It also supports chaining multiple physical workstations together to support distributed virtual labs that operate across multiple physical workstations. It is supported by a small community and has been updated within the past year. VNX replaces VNUML. The old VNUML web site still has sample labs and other content that would be useful when using VNX.
URL: http://www.dit.upm.es/vnx
For more click here


Courtesy: brianlinkletter.com
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