Common operational misconceptions

Brett Lykins lykinsbd at
Thu Feb 16 12:11:42 UTC 2012

The idea that the network will always match the documentation.

I have walked into many projects where this is not the case, but a
Junior Admin working with me can't seem to get around the fact that
the Visio we were handed isn't to be trusted and we've got to
double-check everything.

-Brett Lykins

On Feb 15, 2012, at 3:47 PM, John Kristoff <jtk at> wrote:

> Hi friends,
> As some of you may know, I occasionally teach networking to college
> students and I frequently encounter misconceptions about some aspect
> of networking that can take a fair amount of effort to correct.
> For instance, a topic that has come up on this list before is how the
> inappropriate use of classful terminology is rampant among students,
> books and often other teachers.  Furthermore, the terminology isn't even
> always used correctly in the original context of classful addressing.
> I have a handful of common misconceptions that I'd put on a top 10 list,
> but I'd like to solicit from this community what it considers to be the
> most annoying and common operational misconceptions future operators
> often come at you with.
> I'd prefer replies off-list and can summarize back to the list if
> there is interest.
> John

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