Article: Passing Cisco?s CCNA And CCNP Exams: Traceroute
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Passing Cisco?s CCNA And CCNP Exams: Traceroute
In preparation for your CCNA and CCNP exam success, you've got to learn to troubleshoot Cisco routers. And while ping is a great basic IP connectivity tool, it doesn't give you all the information you need to diagnose network connectivity issues.
Let's say you have six routers between CityA and CityB. You send a ping from A to B, and get this return:
R1#ping 172.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.1.1.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
The five periods indicate that there is no IP connectivity to CityB. Problem is, that's about all ping tells you. You can have 5 or 50 routers between the two points, so how can you tell w...
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