Layers
8, 9, and 10
Whether a designed to be a humorous extension
or a secret technician code, layers 8, 9, and 10 are not officially part of the
OSI model. They refer to the non-technical aspects of computer networking that
often interfere with the smooth design and operation of the network.
Layer 8 is usually considered the “office
politics” layer. In most organizations, there is at least one group who is
favored, at least temporarily, by management and receives “special” treatment.
When it comes to networking, this may mean that this group always has the
latest and/or fastest equipment and highest speed network
links.
Layer 9 is generally referred to as the
“blinders” layer. This layer applies to organizational managers who have
already decided, usually with little or no current information, to dictate a
previously successful network plan.
They may say things such as:
“It worked in my last company, so we will use it here.”
“Everybody says this is the right solution.”
“I read in an airline magazine that this was the best way to do it
so that is what we will do.”
What these managers seem to forget is that they are paying a
highly qualified staff to provide them with useful information. These managers
bypass planning in order to make a quick decision.
Layer 10, the “user” layer, is in every
organization. But users are much more than a layer. While they are one of the
reasons the network exists, users can also be a big part of the need for
troubleshooting. This is especially true when the users have computers at home
and have decided to “help” the network administrator or manager by making
changes to the network without consulting the network staff. Equally
challenging is the user who “didn’t do anything” when the network segment in
his/her immediate vicinity suddenly stopped working. In these cases, the layer
10 identification coincides with layer 10 troubles (and the “ID10T” label some
technicians have used).
ref: www.globalknowledge.com
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