Cisco CCNA Routing and Switching ICND2 200-101 Official Cert Guide

traceroute Basics

Imagine some network engineer or CSR starts to troubleshoot some problem. They ping from the user’s host, ping from a nearby router, and after a few commands, convince themselves that the host can indeed send and receive IP packets. The problem might not be solved yet, but the problem does not appear to be a network problem.

Now imagine the next problem comes along, and this time the ping command fails. It appears that some problem does exist in the IP network. Where is the problem? Where should the engineer look more closely? Although ping can prove helpful in isolating the source of the problem, the traceroute command may be a better option. The traceroute command systematically helps pinpoint routing problems by showing how ...