Book Image

Python Network Programming

By : Abhishek Ratan, Eric Chou, Pradeeban Kathiravelu, Dr. M. O. Faruque Sarker
Book Image

Python Network Programming

By: Abhishek Ratan, Eric Chou, Pradeeban Kathiravelu, Dr. M. O. Faruque Sarker

Overview of this book

This Learning Path highlights major aspects of Python network programming such as writing simple networking clients, creating and deploying SDN and NFV systems, and extending your network with Mininet. You’ll also learn how to automate legacy and the latest network devices. As you progress through the chapters, you’ll use Python for DevOps and open source tools to test, secure, and analyze your network. Toward the end, you'll develop client-side applications, such as web API clients, email clients, SSH, and FTP, using socket programming. By the end of this Learning Path, you will have learned how to analyze a network's security vulnerabilities using advanced network packet capture and analysis techniques. This Learning Path includes content from the following Packt products: • Practical Network Automation by Abhishek Ratan • Mastering Python Networking by Eric Chou • Python Network Programming Cookbook, Second Edition by Pradeeban Kathiravelu, Dr. M. O. Faruque Sarker
Table of Contents (30 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

The Ansible Cisco example


Cisco's support in Ansible is categorized by the operating systems IOS, IOS-XR, and NX-OS. We have already seen a number of NX-OS examples, so in this section let's try to manage IOS-based devices.

Our host file will consist of two hosts, R1 and R2:

[ios_devices]
R1 ansible_host=192.168.24.250
R2 ansible_host=192.168.24.251

[ios_devices:vars]
username=cisco
password=cisco

Our playbook, cisco_5.yml, will use the ios_command module to execute arbitrary show commands:

    ---
    - name: IOS Show Commands
      hosts: "ios_devices"
      gather_facts: false
      connection: local

      vars:
        cli:
          host: "{{ ansible_host }}"
          username: "{{ username }}"
          password: "{{ password }}"
          transport: cli

      tasks:
        - name: ios show commands
          ios_command:
            commands:
              - show version | i IOS
              - show run | i hostname
            provider: "{{ cli }}"

          register: output

...