• Connecting the chassis to system ground. See
Establishing the System Ground, on page 45
• Installing and connecting the power supplies to source power. For information on how to install and
cable power supplies, see the
Installing Power Supplies, on page 55
.
• Connecting to the switch console port. See
Connecting the Switch Console Port, on page 47
• Connecting to the uplink ports.
Installing SFP and SFP+ Transceiver Modules, on page 48
• Powering-up the chassis and verifying the installation. See
Verifying Switch Chassis Installation, on
Establishing the System Ground
This section describes how to connect a system ground to the switch.
Installations that rely solely on system grounding using only an AC third-prong ground run a substantially
greater risk of equipment problems and data corruption than those installations that use both the AC third-prong
ground and a properly installed system ground.
Caution
The system ground provides additional grounding for EMI shielding requirements and grounding for the low
voltage supplies (DC-DC converters) on the modules. You must observe the following system grounding
guidelines for your chassis:
• You must install the system ground connection with any other rack or system power ground connections
that you make. The system ground connection is required if FXS modules are installed or if this equipment
is installed in a U.S. or European Central Office.
• You must connect both the system ground connection and the power supply ground connection to an
earth ground. The system ground connection is required if FXS modules are installed or if this equipment
is installed in a U.S. or European Central Office.
• When using DC-input power supplies, you must install the system (ground before you attach the source
DC power cables to the DC PEM. Power down the chassis before attaching the system ground.
In all situations, grounding practices must comply with Section 250 of the National Electric Code (NEC)
requirements or local laws and regulations. A 8-24 AWG grounding wire is preferred from the chassis to the
rack ground or directly to the common bonding network (CBN). The equipment rack should also be connected
to the CBN with 8-24 AWG grounding wire.
Note
The system ground serves as the primary safety ground for chassis that are equipped with DC-input power
supplies. The DC-input power supplies for these chassis do not have a separate ground.
Note
Required Tools and Equipment
To connect the system ground, you need the following tools and materials:
Catalyst 6840-X Switch Series Hardware Installation Guide
45
Installing the Switch
Establishing the System Ground
Содержание Catalyst 6816-X-LE
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