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In the previous video we learn how to configure
ssh on cisco routers and mikrotik routers.

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So now, we can remote the cisco and mikrotik
router from our computer using ssh.

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Well, in this video we will learn how to do
network automation, we will learn about network

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automation on cisco routers first.

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We will learn about network automation on
mikrotik routers in the next video.

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Okay, let's get to the point, this is the
script that we will use in this video

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which is to do network automation on cisco routers.

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I will also upload this script to the resources
section, so you can download it, but I recommend

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you to not copy and paste the code, you need
to write the code by your self, so you can

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understand the code easily.

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Let’s understand the code, in the first
line, we import paramiko, paramiko is python

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library that we are going to use as a ssh
client.

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We also need to import time, I will explain
later why we need to import time.

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Here we define the ip address, username and
password of the cisco router

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We call SSH Client function from paramiko.

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Then we connect to the router using the ip
address, username, and password that we have

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defined before.

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Here, we print that we have successfully connected
to the router, and then do invoke shell.

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Here we can see that we send the cisco command
to the router.

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In this example I just send a command to configure
loopback interface 0 with ip address 10.1.1.1.

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Here you can see that I define time sleep
1, which means that the code will delay for

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1 seconds, we need to make the code wait for
1 seconds or the command will not sent to

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the router successfully, we will try to remove
the time sleep later and we will see the result.

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Here we save the output of the cisco command
that we have sent to the router

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and then we print the output to the console.

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Last, we need to close the ssh connection
from the router.

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Okay Now let’s run the code.

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open the command prompt, and go to the directory
where we save the code.

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Let’s try to dir to make sure that we are
in the right directory.

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Here we can see that we have script.py.

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Let’s run the code by command python script.py

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Here we can see that we have successfully
login to 192.168.1.3, which is the IP Address

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of Cisco Router.

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And then we also see that we have successfully
send command to configure loopback interface

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0 with ip address 10.1.1.1 to the cisco router.

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Let’s go to the cisco router and type show
ip interface brief

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here we can see that now we have loopback 0 with ip address 10.1.1.1.

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Congratulations!

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You are successfully doing your first Network
Automation!

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Last for this video, I want to show you how
if I remove the time sleep from the code.

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Here remove time sleep.

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I will change the loopback interface and
the ip address,

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Now save the code, and run it again.

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Look, the command is not sent to the router
successfully, let’s go to the cisco router

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and type show ip interface brief, we also
not see the interface loopback 1 here.

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Now let’s put the time sleep again to the
code.

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Save the code, And run it again.

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Cool !  the command sent to the router successfully,
let’s make sure again in the cisco router,

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now we have interface loopback 1 with IP Address
10.1.1.2 here

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Congratulation !  now you are able to write a
simple script for network automation on cisco router

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In the next video, we are going to learn simple
script for network automation on mikrotik router

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Thankyou for watching and See you on the next
video.