Rj-45 Connector Jackets; Radio Frequency Interference - Extreme Networks BlackDiamond 10K Series Installation Manual

Site Preparation

RJ-45 Connector Jackets

Use RJ-45 cable with connector jackets that are flush with the connector or that have connectors with a
no-snag feature.
Using cable with jackets that are wider than the connectors can cause:
• Connectors that are not properly aligned with the port.
• Crowded cable installation, which can cause connectors to pop out of the port.
Figure 8 shows examples of connector jacket types that are not recommended as well as those that are
recommended.
Figure 8: RJ-45 connector jacket types
Not recommended

Radio Frequency Interference

If you use unshielded twisted pair (UTP) cabling in an installation, take precautions to avoid radio
frequency (RF) interference. RF interference can cause degradation of signal quality, and, in an Ethernet
network environment, can cause excessive collisions, loss of link status, or other physical layer problems
that can lead to poor performance or loss of communication.
To prevent RF interference, avoid the following devices or situations:
• Attaching UTP cable to AC power cables
• Routing UTP cable near antennas, such as a Ham radio antenna
• Routing UTP cable near equipment that could exhibit RF interference, such as:
— ARC welding equipment
— Electrical motors that contain coils
— Air conditioner units
— Electrical transformers
32
Best
0.1" = 1mm actual
Better
39.37% : 254%
Extreme Networks BlackDiamond 10K-Series Switch Installation Guide
SPG_001