Learning by Doing: CISCO Certified Network ... - SCN Research

5. Finally, do not forget about those workstations out there! Just because you can
telnet router to router does not mean all is well…be sure you can ping from
workstation A to workstation B.
Supplemental Lab or Challenge Activity:
1. In this lab if you were consoled into Ward from workstation B, then what would
you expect to see if you typed this command ping 192.168.3.1? Assume
everything is cabled, programmed, and working correctly.
2. If you typed this command ping 192.168.3.1 from Ward and received five “U’s”
then what would you test? (give several steps)
3. If you typed this DOS command tracert 192.168.3.1 from workstation B and
received a timeout message after the serial interface on Randy then what would
you test? (give several steps)
4. If you were having problems with a serial line (DCE) and typed sh int on Randy
and found out the interface was “UP-DOWN” then what would you test? (give
several steps)
So What Have I Learned Here?
In this lab you learned the basics of troubleshooting from one router to the other. As
you move up in your studies you will learn more precise troubleshooting methods. I
cannot tell you how many times a student told me their network didn’t work and all
that was wrong was an unplugged cable. Keep it simple first. Let me introduce you
to Murphy’s Law of Computers: It works better when it is plugged in. How true, how
true.
Guest Router Name Derivation
Ward Christensen and Randy Suess are generally attributed as creating the first Bulletin
Board System (BBS) in 1978. The BBS site, located in Chicago, Illinois is still supposed
to be in operation today.
History of BBS: http://www.zdnet.com/pcmag/issues/1414/pcm00161.htm
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