Extreme Networks ExtremeSwitching 5720 Series Hardware Installation Manual page 32

Install Cable
•
Use plenum-rated cable when it is necessary for safety and fire rating requirements. Consult your
local building codes to determine when it is appropriate to use plenum-rated cable, or refer to IEC
standard 850.
•
Keep all ports and connectors free of dust.
Figure 13: Properly Installed and Bundled Cable
1 = Ensure adequate slack and bend radius
Handle Fiber Optic Cable
Fiber optic cable must be handled carefully during installation.
Every cable has a minimum bend radius, example, and fibers will be damaged if the cables are bent too
sharply. It is also important not to stretch the cable during installation. Ensure that the bend radius for
fiber optic cables is equal to at least 5 cm (2 in) for each 90-degree turn as shown in
Note
Kinks and sharp bends can destroy or impair the cable's ability to convey light pulses
accurately from one end of the cable to the other. Use care in dressing the optical fiber cables:
provide satisfactory strain relief to support the cable and maintain an adequate bend radius at
all cable turns, particularly where the cable connects to the I/O module.
32 ExtremeSwitching 5720 Series Hardware Installation Guide
Site Preparation
Figure 14.