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device_info_to_excel, use this script to gather Cisco device info

published

This is a script that leverages netmiko to gather Cisco device info. The script then outputs the results to an excel spreadsheet. Use this script to improve your understanding of python. While also learning how to leverage network automation to update your network documentation. Another note, if you need access to a lab environment you can have free access to the Cisco DevNet Always-On Sandbox

Gathers:

  • hostname
  • ios version
  • device uptime
  • serial number
  • hardware type
  • running device image

The intent of the of this script is to help you understand the basics of writing a line-by-line execution Python script.

Download the Code

To get started: Download the code and cd the DeviceInfoToExcel directory

git clone https://github.com/labeveryday/device_info_to_excel.git
cd device_info_to_excel

Python Virtual Environment

When executing python code or installing python applications you should get into the practice of creating and managing python virtual environments. This will allow you to run different versions of a python library while avoiding version conflicts. My preferred tool for python virtual environments is venv There are tools out there. Remember to find what works best for you.

On Linux or Mac

python3 -m venv venv
source venv/bin/activate

On Windows

python3 -m venv venv
.\venv\Scripts\activate.bat

Install project requirements

Once you have your virtual environment setup and activated you will need to install your python packages if needed. One way to do this is by doing pip install <python package> another way is by using the example listed below. It will installed the required libraries for this specific package.

pip install -r requirements.txt

Example: Script in action

Lab

Before executing your script you must update your device ip address list in the device_info/ip_file.txt file. This will be the list of ip addresses that will be used in the script.

(venv) duan@ubuntu device_info_to_excel$ cat device_info/ip_file.txt 
192.168.23.142
192.168.23.143
192.168.23.144
192.168.23.145
192.168.23.146
192.168.23.147

Now that you have everything installed and updated you can execute the script

(venv) duan@ubuntu device_info_to_excel$ python main.py
Username: duan
Password: 

Attempting to ping 192.168.23.145.....
Ping successsful!!!!
Now connecting to: 192.168.23.145

Device Hostname: R1-CSR1000v
------ Uptime:   21 minutes
------ Serial:   9O840KC3ZG2
------ Version:  17.3.1a

----------------------------------------

Attempting to ping 192.168.23.146.....
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Down 192.168.23.146 ---- Ping Unsuccessful 😔
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
----------------------------------------

After the script successfully pulls data from the devices the inventory.xlsx file will be updated accordingly.

NOTE: With the python xlsxwriter there is no way to append to a workbook. Each time the script is executed the inventory.xlsx file will be recreated.

excel

About me

Introverted Network Automation Engineer that is changing lives as a Developer Advocate for Cisco DevNet. Pythons scripts are delicious. Especially at 2am on a Saturday night.

My hangouts: