Cabletron Systems bridges Manuel D’Utilisation
Network Design
5-12
Creating a Manageable Plan
Use a standard, decipherable labeling code for cable and hardware. A label
reading L2N5W2C1S243 may look like gibberish now, but if you know that
the letter codes indicate locations or conditions of installation, it can be quite
helpful. Table 5-1, below, shows the meanings of the codes and numbers of
this example.
reading L2N5W2C1S243 may look like gibberish now, but if you know that
the letter codes indicate locations or conditions of installation, it can be quite
helpful. Table 5-1, below, shows the meanings of the codes and numbers of
this example.
Cable Label: L2N5W2C1S243
Fault Aversion
A good network design strategy realizes the importance of avoiding future
trouble spots. It is possible to design a network such that the most dangerous of
these trouble spots are either eliminated, covered by contingencies, or their effects
are minimized. This aspect of network design is called “fault aversion.”
trouble spots. It is possible to design a network such that the most dangerous of
these trouble spots are either eliminated, covered by contingencies, or their effects
are minimized. This aspect of network design is called “fault aversion.”
A fault averse network uses the capabilities of available hardware and the
fault-tolerance or recovery features of the technologies of the network to provide
for three things: the elimination of single points of failure, the availability of
redundancy, and the quick and easy isolation of and recovery from errors or
problems.
fault-tolerance or recovery features of the technologies of the network to provide
for three things: the elimination of single points of failure, the availability of
redundancy, and the quick and easy isolation of and recovery from errors or
problems.
Table 5-1. Cable Code Key
Code
Code Definition
Meaning
L2
Location 2
Engineering Building
N5
Network 5
Network Map #5
W2
Workgroup 2
Production Controls Workgroup
C1
Closet 1
Wiring Closet #1
S243
Station 243
Wallplate #243
NOTE
The code key depicted above is only an example, and is not
indicative of any industry standard or generally accepted cable
marking practices.
indicative of any industry standard or generally accepted cable
marking practices.