Installation guide

124 Documenting the Network Layout
890 USE 100 00
4.5 Estimating Cable Lengths
After defining the network topology, consider the required cable lengths
between nodes. You can enter the estimated cable lengths onto the
topology planning worksheet. This information will be required for the
detailed planning worksheets you will be using next.
For dual-cable network planning, note that the point of the two cable
runs is to minimize the potential for communication loss through
interference or damage to either cable. Therefore you should plan for
proper physical separation of the cables at all points except for where
they connect to a network node device.
Use a facility grid or floor plan to estimate the cable lengths. Account
for all horizontal runs, vertical rises, and required clearances from
interference sources. A walkthrough to confirm your estimates is best.