"Problem solving is hunting. It is savage pleasure and we are born to it."
–Thomas Harris
We have discussed the various aspects of design and configuration of various parts of the enterprise network. We might have done all the right things to build a robust and resilient network, but the fact of the matter is that problems happen. Devices breakdown, software hits bugs, links and ports fail, and people make configuration errors. Any of these can lead to services being down or degraded, requiring troubleshooting.
In this chapter, we will discuss the following topics:
- Define a framework for structured troubleshooting
- Define the techniques used for troubleshooting IP networks
- Discuss common troubleshooting commands
While it is not possible to cover all types of incidents that can occur in an enterprise IP network in one...