Scenario 3Determining the Probable Source


Scenario 3”Determining the Probable Source

This is the type of scenario you can expect to see reflected in several questions on the exam. You should understand how ICMP works in the network as a troubleshooting tool. In Figure C.3, you see a network with five PCs on different floors. There is a connectivity issue and PCs on the first floor cannot communicate with PCs on the second floor.

Figure C.3. A network where the first floor PCs have problems communicating with the PCs on the second floor.

graphics/ap03fig03.gif

The two PCs on the first floor can ping each other, but they cannot ping their own configured default gateway. The PCs on the second floor can successfully ping each other and their default gateway. The PCs on the second floor cannot ping the IP address of the first floor PCs' default gateway. What is the most likely problem?

In this case, the most likely problem could be narrowed down to either a misconfigured routing table on the router, an interface configuration problem, or a hardware problem with the Fast Ethernet 0/0 interface. One or more of these items would be listed as choices for correct answers on the exam.



CCNP CIT Exam Cram 2 (642-831)
CCNP CIT Exam Cram 2 (Exam Cram 642-831)
ISBN: 0789730219
EAN: 2147483647
Year: 2003
Pages: 213
Authors: Sean Odom

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