Re: Common operational misconceptions

[Mark Grigsby <mark () pcinw net>]

On Wed, Feb 15, 2012 at 1:10 PM, Kenneth M. Chipps Ph.D.
<chipps () chipps com>wrote:

> Keep the discussion on the list. I would like to know as well.
>
> Kenneth M. Chipps Ph.D.
>
> -----Original Message-----
> From: John Kristoff [mailto:jtk () cymru com]
> Sent: Wednesday, February 15, 2012 2:47 PM
> To: nanog () nanog org
> Subject: Common operational misconceptions
>
> 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

 I don't know how many times I have "Network Administrators" ask questions
like this...
Speaking in the context of configuring an ipsec tunnel..

    "I have my side built. Can you lock your side down to a specific
protocol? Our sets his device to TCP 104. Makes it nice for me when I set
my ACLs."

I am pretty sure that he meant protocol TCP and Port 104, but I do grind my
teeth when I have to go show them that a specific protocol number means
something completely different than what they were asking.

-- 
Mark Grigsby
Network Operations Manager
PCINW (Preferred Connections Inc., NW)
3555 Gateway St. Ste. 205
Springfield, OR  97477
Office  541-242-0808 ext 408
TF:   800-787-3806 ext 408
DID: 541-762-1171
Fax:  541-684-0283