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Intro to Network Automation
This document introduces network programmability and automation. It discusses the need for automation in modern networks and the benefits of network programmability. It provides an example use case of using simple Python scripts to automate tasks like device inventory, configuration backup, and setting common configurations. Centralized logging and dashboards are proposed to provide visibility. Finally, it outlines initial steps to get started with network automation and areas to explore further like additional libraries, Ansible, containerization, and cloud networking.
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Intro to Network Automation
- 1. An Introduction toNetwork Programmability and Automation Prepared by : Albert Suwandhi
- 2. Albert Suwandhi Certifications : •Cisco CCNA and CCNP - Enterprise • Mikrotik MTCRE and MTCTCE • AWS Certified Solution Architect – Associate • Azure Fundamentals GitHub : https://github.com/albertsuwandhi LinkedIn : https://id.linkedin.com/in/albertsuwandhi SlideShare : https://www.slideshare.net/albertsuwandhi Telegram : @albertsuwandhi
- 3. 5/28/2020 3 DISCLAIMER • IAM NOT AN EXPERT • I AM STILL LEARNING
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- 6. The Four Agesof Networking 5/28/2020 6
- 7. The New InfrastructureStack 5/28/2020 7
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- 9. Network Programmability Network programmabilityis a set of tools to deploy, manage, and troubleshoot a network device. A programmability-enabled network is driven by intelligent software that can deal with a single node or a group of nodes or even or address the network a single unified element. 5/28/2020 9 *It doesn’t have to be python
- 10. Why we needto automate? 5/28/2020 10
- 11. Benefits of NetworkAutomation 5/28/2020 11NetOps Meets DevOps: The State of Network Automation, 2018
- 12. Why Network Programmability •Running network infrastructure as code is not something cliché anymore. It’s real and necessary. When we have more devices in the network, automation is the only way to avoid human error. However, automation can bring complexity. And one mistake in CLI may bring down only one device, while one mistake in automation platform can be propagated quickly to the entire network • Try to build our automation skills slowly: starting with Level 1, task specific automation, where we can write simple code to communicate to network devices using various APIs to execute certain task. Then move up to Level 2 by using platform like Ansible and its playbook to execute series of task to complete one workflow. Continue doing this until we reach Level 5 automation. 5/28/2020 12
- 13. Let us justsee a simple use case applicable to our network 5/28/2020 13 We won’t discuss all of them
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- 15. Some task wehave to do related to network • Inventory Network Devices • Backup Configuration • Get VLAN Information • Set Common Configs. Ex : change SNMP Credentials • etc If we only have a few devices it will be OK. How if we have hundreds to thousands of device? Log in into the devices one by one to do the task? 5/28/2020 15
- 16. We will usea simple code to do the repetitive tasks • Inventory Network Devices • Backup Configuration • Get VLAN Information • Set Common Config. Ex : change SNMP Credentials 5/28/2020 16 https://github.com/albertsuwandhi/Cisco-Tools I just use a few common libraries : Paramiko, Netmiko, TextFSM, etc
- 17. How about Logging?Use centralized logging 5/28/2020 17
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- 20. Simple Steps toGetting Started STEP 1: Make the Case for Automation STEP 2: Identify Business Processes That Can Benefit STEP 3: Map to the Network Infrastructure STEP 4: Make a Plan and Start Simple STEP 5: Emphasize the Human Element STEP 6: Use the Right Tools to Leverage the Benefits of Automation 5/28/2020 20
- 21. Learn More aboutNetwork Automation 5/28/2020 21
- 22. Learn More aboutNetwork Automation 5/28/2020 22 https://developer.cisco.com/netdevops/live/
- 23. What’s Next? • Builda GUI/Dashboard? (I am not good at it ) • Explore more network automation libraries : PyATS, NAPALM, Nornir, etc • Explore and Use “Ansible” • Logging with ELK/Splunk • Running containers on our switches? • Cloud Networking • … and many others interesting topics to be explored together 5/28/2020 23
- 24. There's a "works"in "networks", and that has never been as important as today. 5/28/2020 24
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