Extreme Networks Summit 200-24, Руководство по установке оборудования

Страница: 49 / 386

Meeting Power Requirements
Extreme Networks Consolidated "i" and "e" Series Hardware Installation Guide 49
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
In areas or applications where these situations cannot be avoided, use fiber optic cabling or shielded
twisted pair cabling (STP).
NOTE
Because harmonics can appear on the neutral line of a typical three-phase power circuit, Extreme
Networks recommends using a harmonics meter in new installations.
Making Network Interface Cable Connections
Use the appropriate type of cable to connect the ports of your switch to another switch or router.
Working carefully, one port at a time, follow these steps:
1
Verify that you have identified the correct cable for the port.
2 Use an alcohol wipe or other appropriate cleaning agent to clean the cable connectors; make sure
they are free of dust, oil, and other contaminants.
3
If you are using optical-fiber cable, align the transmit (Tx) and receive (Rx) connectors with the
correct corresponding connectors on the switch or the I/O module.
On the ATM and PoS modules, the transmit (Tx) connector on each port is the top connector.
4
Press the cable connectors into their mating connectors on the switch or I/O module until the cable
connector is firmly seated.
5 Repeat steps 1 through 4 for the remaining cables on this or other switches or I/O modules.
6 Dress and secure the cable bundle to provide appropriate strain relief and protection against bends
and kinks.
Meeting Power Requirements
This section discusses power requirements, including:
•
Power Supply Requirements
• AC Power Cable Requirements
•
Uninterruptable Power Supply Requirements