Data’s Role in Network Observability

As we introduced in Chapter 1, network observability aims to provide answers to many different questions by getting visibility of the operational state of the network, from different perspectives. This visibility comes from many distinct types of operational data, each one requiring different collection methods.

In this chapter, you will learn about the following:

• The basic concepts around traditional network monitoring and the new telemetry approach, together with a classification by which network planes (i.e. management, control, and forwarding) are targeted by each monitoring protocol.
• Recap of available data types and how to collect them with programmatic hands-on examples leveraging Python libraries. Having a basic understanding of Python will help you navigate the examples better, but the explanations should make it understandable either way.

Note

We use the informational RFC 9232, Network Telemetry Framework...