Chapter 13
ICMP
Objectives
Upon completion of this chapter, you will be able to answer the following questions:
How is ICMP used to test network connectivity?
How do you use the ping and traceroute utilities to test network connectivity?
Introduction (13.0)
Imagine that you have an intricate model train set. Your tracks and trains are all connected and powered up and ready to go. You throw the switch. The train goes halfway around the track and stops. You know right away that the problem is most likely located where the train has stopped, so you look there first. It is not as easy to visualize problems with a network. Fortunately, there are tools to help you locate problem areas in a network—and they work with both IPv4 and IPv6 networks! ...
Get Introduction to Networks Companion Guide (CCNAv7) now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
