Book Image

Practical Network Automation

By : Abhishek Ratan
Book Image

Practical Network Automation

By: Abhishek Ratan

Overview of this book

Network automation is the use of IT controls to supervise and carry out every-day network management functions. It plays a key role in network virtualization technologies and network functions. The book starts by providing an introduction to network automation, SDN, and its applications, which include integrating DevOps tools to automate the network efficiently. It then guides you through different network automation tasks and covers various data digging and reporting methodologies such as IPv6 migration, DC relocations, and interface parsing, all the while retaining security and improving data center robustness. The book then moves on to the use of Python and the management of SSH keys for machine-to-machine (M2M) communication, all followed by practical use cases. The book also covers the importance of Ansible for network automation including best practices in automation, ways to test automated networks using different tools, and other important techniques. By the end of the book, you will be well acquainted with the various aspects of network automation.
Table of Contents (14 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Multi-vendor environments


Sometimes we have many vendors participating in a configuration change or even creating various templates from scratch. We have vendors such as Arista, Cisco (IOS, NXOS), and Juniper that participate in network design in different layers. While dealing with situations such as this we need to be clear which layer each of the vendors is working on and create dynamic templates for each type of vendor involved.

Taking a scenario in which we know the hardware platform and the role of the device (such as access layer, core layer, or top of rack (TOR) layer; we can generate configs quickly with very basic parameters.

If a device is in production, we can use the SNMP protocol to fetch information for that device and create dynamic values based upon the return type of devices.

Note

As a basic idea, we can have a look at https://wiki.opennms.org/wiki/Hardware_Inventory_Entity_MIB. This has the information on the current open standard Managed Information Base (MIB) that is used...