Program For Simulation Of Routing Protocols In Java

Dynamic Source Routing Protocol Project Source Code in Java, Project Report, Paper presentation.

README.md Link State Routing Protocol Simulation This project implements a simulator to the Link-State Routing Protocol in Java and JavaFX (for GUI) which mainly have two functions: • to simulate the process of generating connection table for each router in a given network and, • to compute optimal path with least cost between any two specific routers. Besides, this project provides both I/O console and GUI interfaces for the user interaction with the simulator. Also, supports for over any initial number of nodes and creation and display of the connection tables by default is enabled as well.

Psimulator2 is a basic graphical network simulator created and used by the to teach basic networking topics. It will run on any system that supports Java, including Windows, Mac OS, and Linux. Each node created in the Psimulator2 network is a Java program that implements the functionality of a host, switch, or router.

Once a network simulation scenario is started, the user can connect to each virtual node using telnet and enter configuration or test commands. However, only a sub-set of normal networking functionality is supported by the software emulation the node. Read on to see how to set up a network using the Psimulator2 graphical user interface and run the simulation. UPDATE: Psimulator2 forked Updated November 16, 2016: forked the project from the original, seemingly discontinued source and made the new version available. See, which includes details about how to build the new version of psimulator2.

Install Psimulator2 To install Psimulator2, download the latest and use the Archive Manager utility to unpack the files into a new folder. I chose to unpack the files into a folder: $HOME/Psimulator2.

NOTE: The is now read-only and there appears to be a new version (or it may just be an archive of the current version). Java Psimulator2 requires a Java run-time environment, but Java is not installed by default in Xubuntu. To install Java, search for default-jre in the Ubuntu Software Center application. Install this package using the Software Center or using the following command: $ sudo apt-get install default-jre This will install all the required packages to support Java 7 on the Linux host computer. To install Java in Windows or Mac OS, go to the for instructions. Telnet Psimulator2 also requires a Telnet client.

Telnet is installed by default in Linux and Mac OS but, if you are using Windows, you should install the program. Psimulator architecture Psimulator2 is divided into two parts – the front-end and the back-end. The front-end is the graphical user interface that helps the user to create a network topology and, after the simulation is started, it displays sent or dropped packets in network, using simple animations. The back-end runs the simulation based on information in the XML file generated by the front-end. The Psimulator2 developers proposed a scenario in which the front-end can run on one computer and the back-end can run on another computer.

But, in normal use, both the front-end and back-end run on the same computer. The front end and the back end work together to run a simulation. Create new network simulation scenarios To create and run a network simulation in Psimulator2, follow these steps: • Start the front end • Use the GUI to create a network topology with nodes and links • Save the topology as an XML file • Start the back end so it will use the previously-created XML file to create the simulated nodes • Connect the front-end to the running back-end simulation so you can use the front-end GUI to demonstrate networking features in the simulation. Re-use saved network simulation scenarios To run a previously saved network simulation in Psimulator2, follow these steps: • Start the front-end • Use the GUI to open the previously saved network topology XML file • Start the back-end so it will use the same previously-saved network topology XML file you opened in the front-end. • Connect the front-end to the running back-end simulation so you can use the front-end GUI to demonstrate networking features in the simulation. Start Psimulator2 front-end To start the Psimulator2 front-end application, navigate to the folder in which you unpacked the Psimulator2 files (or include this folder in your $PATH).

Then, execute the command: $ java -jar psimulator2_frontend.jar This will start the front-end GUI. From this first screen, you may create a new network topology or open an exisiting network topology file. Create a new network topology To create a new network topology, click on the New Project button. The Psimulator2 GUI will enter Edit Mode and you will see a blank canvas with some tool bars. The user interface is relatively intuitive. The tool bar along the left side of the window offers tools to add network elements such as hosts, routers, switches, and network links.

It also offers some tools to organize elements on the canvas. Add network nodes To add network elements, right-click on the node type in the tool bar (example: the router) and then click on one of the router types that appear in the pop-up menu (example: Linux router). Then, click on the location in the canvas you want the node to appear. Cliuk again if you want to add more than one of the same node type. You can select elements already on the canvas and move them around.

Configure interfaces To configure the interfaces on the network element, click on it on the canvas and select Properties from the pop-up menu. The Properties dialogue box will appear. You can change the name of the node and configure the IP addresses of each interface. You can also add more interfaces if you need them. You can configure the interfaces at any time but in this case we are configuring them first. The configuration for one of the PC nodes is shown below: One of the router configurations is shown below.

This router has four interfaces but we plan to use only two of them. I chose to use the lowest-numbered interfaces to connect to local networks and the highest-numbered interfaces to connect to other routers. Interface IP addresses In this example, the IP addresses for each node in the network should be configures as follows: Node Interface IP Address PC 0 eth0 10.0.100.2/24 PC 1 eth0 10.0.100.3/24 Router 0 eth0 10.0.100.1/24 eth3 10.0.1.1/24 Router 1 eth0 10.0.200.1/24 eth3 10.0.1.2/24 PC 2 eth0 10.0.200.2/24 Ethernet links To add links between nodes.

Click on the Links tool, then click on each node that will form an endpoint of the link. You need to specify which interface to use on devices with multiple interfaces, like routers.

To choose an interface, right-click on the node, then click the interface from the pop-up menu. Canvas properties As you add links, more information about the interfaces is displayed on the canvas. Eventually, the canvas gets cluttered with information.

Beowulf Pdf Online. You can change the Psimulator2 preferences so that less information is displayed. Click on the Preferences menu item. In this case, we chose to display only interface names and IP addresses on each interface. Now the canvas is easier to read. Save the topology XML file Save the network topology.

Click on the menu command File → Save. In our case, we chose to save the file with the name test-topology.xml. Start the back-end Start the back-end Psimulator2 server with the network topology we previously created and saved using the front-end GUI, test-topology.xml. Enter the command: $ java -jar psimulator2_backend.jar test-topology.xml Pay attention to the output on the terminal screen. The back-end server displays the port numbers that each node is listening to. This is the port number we will use later to telnet into a node. Also note the port number for the packet flow server.

This is the port to which we must connect the Psimulator2 front-end (Port number 12000 is the default). I too: [INFO] NETWORK_MODEL_LOAD_SAVE: config.configTransformer.Loader: XML configuration file is corrupted: config.configTransformer.LoaderException: Could not find Device with id=41 a for Switchport with id=44 at config.configTransformer.Loader.findSwitchportFor(Loader.java:457) at config.configTransformer.Loader.connectCablesV2(Loader.java:408) at config.configTransformer.Loader.loadFromModel(Loader.java:94) at psimulator2.Main. Download Rom Gba Games Final Fantasy 3 Ds there. main(Main.java:97) [ERROR] NETWORK_MODEL_LOAD_SAVE: config.configTransformer.Loader: XML configuration file is corrupted. Config.configTransformer.LoaderException: Could not find Device with id=41 a for Switchport with id=44. Hello Brian, thanks for the quick response. It is working on Windows 7. It works fine except for that one issue.

For example, routing packets betweeen two PCs connected to one switch works fine. The only problem is that the routers can’t forward packets they receive.

And that’s because i can’t “Enable IP Forwarding on routers”. You gave the instruction for Linux and I am trying to figure out how to do that on Windows. I found several methods online but nothing helps. I will keep trying. Thanks for your time. Thanks for the info Brian. I was able to get it “functional” installing Java 8.

I am running into an interesting problem though. Whenever i place a device in my configuration with no cable attachments and save my xml config and run it, i can start up the backend server with no issues. The minute that i connect up devices (router to router or router to PC, etc) save and try to start up the server i get an error that there is a corruption in the XML file. It starts to kick off the listening process but never finishes the process. I am curious if anyone else has seen this and been able to correct the issue. Hi all, just a heads up, I forked the project from the original, seemingly discontinued source and it is available.

I have fixed the issue preventing the use of Java 8, but I have yet to look into making a release on GitHub. You can, however, clone the repository and use gradle to build jar files – I recommend using ‘gradle shadowJar’ to create jar files which can be run without specifying any further dependencies. For the frontend, use ‘java -jar java -jar frontend/build/libs/psimulator-frontend-master-*.jar’ (replace the asterisk/* with the exact name, the star represents the git commit you used to checkout). For the backend, use ‘java -jar backend/build/libs/psimulator-backend-master-*-all.jar’ (replace the asterisk/* with the exact name, the star represents the git commit you used to checkout).

Cheers Roland.