Tech

• Docker

• NS2

Installation

1. It is Advisable to login as root

$ sudo su

2. Let's follow the linux best practices by updating the package lists and hence upgrading packages to latest version

$ apt-get update && apt-get upgrade

3. Installing Docker in Ubuntu

Follow the Official docs to install docker engine based on your OS(https://docs.docker.com/install/)

$ docker --help will return info about all arguments that can be added to docker command

4. Pull Ubuntu image containing ns2

• $ docker pull npranav10/ns2 Login into your docker account if asked for.

• Start docker using, $ dockerd & (press Enter after entering the command)

• Then check for the image named "npranav10/ns2" using the following command, $ docker image ls If it exits, then the docker pull is successfull.

• Run $ xhost local:root on host machine to enable execution of GUI commands in the container

• $ docker container run -it npranav10/ns2 bash will enter into terminal mode of the container.

• To validate we can enter the follwing command in another terminal of host machine, $ sudo docker container ls which will return container id running using corresponding image id.

• $ docker run -it -v /tmp/.X11-unix:/tmp/.X11-unix -e DISPLAY=unix$DISPLAY npranav10/ns2 bash will give you access to terminal of ubuntu container, where we can run ns2.

• To avoid typing the whole command line present above, we can use alias to save time. $ alias dockerns2='docker run -it -v /tmp/.X11-unix:/tmp/.X11-unix -e DISPLAY=unix$DISPLAY npranav10/ns2 bash' will cutshort our command to just dockerns2. Now run $ dockerns2 to get into bash of the container.

• The command $ ns ns-simple.tcl will execute the pre-downloaded sample file. If everything does well, a NAM window will pop up and then rest is in your hands in handling the ns2-ubuntu container. OUTPUT OF EXECUTED TCL FILE WILL BE STORED IN OUT.NAM FILE

5. METHOD TO IMPLEMENT TRACEGRAPH AND A WAY TO STORE YOUR FILES WILL BE ADDED SOON