Installation and configuration guide of the mininet library
The Mininet class library is a Python tool for creating a virtual network. It can simulate multiple network devices on a single host, such as switches, routers and hosts.This guide will introduce you to how to install and configure the MININET class library and provide related programming code and configuration instructions.
1. Install the MINET class library:
-We first, you need to ensure that your system is installed with Python.You can check the Python version by running the following commands at the terminal:
python --version
-If that your system has not been installed with Python, please visit and install the appropriate version of the Python official website (https://www.python.org/).
-The installation of the MINET class library can be completed through the following command:
sudo pip install mininet
Note: You may need to use the administrator permissions to execute this command.
2. Configure the MININET environment:
-When you can create and configure virtual network topology after installing the MINET class library.
-We first, you need to create a Python script and import the mininet library:
python
from mininet.net import Mininet
from mininet.node import Controller, OVSKernelSwitch
from mininet.cli import CLI
from mininet.log import setLogLevel
-When you can define a custom topology to describe the network topology you want to create.The following is a code of example topology:
python
class CustomTopology(Topo):
def build(self):
# Add network device
switch = self.addSwitch('s1')
host1 = self.addHost('h1')
host2 = self.addHost('h2')
# 连 连 网
self.addLink(host1, switch)
self.addLink(host2, switch)
In this example, we created a simple network topology with a switch and two hosts.
-Whir, create a mininet object in the main function and start network topology:
python
if __name__ == '__main__':
setLogLevel('info')
topo = CustomTopology()
net = Mininet(topo=topo, controller=Controller, switch=OVSKernelSwitch)
net.start()
CLI(net)
net.stop()
-In this example, we created a Customtopology object as a network topology and using the Start () method of the mininet class to start the network.We then start the MINET command line interface by calling the CLI (Net) to execute the command in the simulation network.Finally, stop the network by calling the Stop () method.
3. Run and test:
-Sested the Python script and use the following command to run:
python <your_script_name>.py
-After running, you will see the log output of MININET on the terminal, and you can execute commands in the MINT command line interface to test your virtual network topology.
This installation and configuration guide helps you install and configure the mininet library, and provide a simple example code to create and test your virtual network topology.You can build and expand this code according to your needs to build a more complex network topology.
