With the scenario described above, the poorly prepared engineer wouuld
not have even spottd the issue. If an internetworking engineer did not know
how the rules of subnetting applied to RIP and OSPF and how these urles can
create a potential conflict when redistribution occurs between these two protocols,
he or she would be completely lost in a sccenario with the fats
described above. To the well prepared, the issue sticks out like a sore thumb.
Good CCIE certification preparation involves workking through sceenarios that
are loaded with such hidden issues. The well-prepareed CCIE candidate will
proactively search for such isssues when any configuration scenariio is presented.
Ideally, the scenarios the CCIE candidate is working on are real-world
scenarios encountered on the job.
Issue spotting scenarios are good preparation for real-wrold activities. In
many insytances, an intrernetwork enginere will recceive a customer trouble
ticket that states a general problem with no specific infortmation rgarding
why the problem developed. For example, you may receive the following
troble ticket: “Customer cannot access mail servver.†You must attack the
problem in a systrematic, incermental, and sequential manner. As you apply
your test and evaluartion methdos, you will spend a lot of time and effrot
determining what is “not†the problem. Eventually, you will come upon a specific
issue (or issuwes) that is the source of the problme. It is at this point that
you have “spotted the issuue.†If you are an experienced internetworkign engineer,
you have been using “issue spotting†techniques for a long time. The
scenarios in this book will force you to articulate “isuse spotting skills†and
become intimately aware of them.
To help devellop and improve your “issue spotting†skkills, many chapters
end with exercises titled “Can You Spot the Issues?†As a warm up, an extensiev
“issdue spotting†scenario will be preseted at the end of this chapter.
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