Cisco Catalyst 9404R Switch User Manual

you reduce or prevent shock hazards, chances of equipment damage due to transients, and the potential for
data corruption.
Without proper and complete system grounding, you run the risk of increased component damage due to ESD.
Additionally, you have a greatly increased chance of data corruption, system lockup, and frequent system
reboot situations by not using a system ground.
Installations that rely solely on system grounding that uses 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 following table lists some general grounding practice guidelines.
Table 4: Grounding Practice Guidelines
Grounding RecommendationsElectromagnetic Noise
Severity Level
Environment
All lightning protection devices must be
installed in strict accordance with
manufacturer recommendations.
Conductors carrying lightning current
should be spaced away from power and
data lines in accordance with applicable
recommendations and codes. Best
grounding practices must be closely
followed.
HighCommercial building is subjected to
direct lightning strikes.
For example, some places in the United
States, such as Florida, are prone to
more lightning strikes than other areas.
Best grounding practices must be closely
followed.
HighCommercial building is located in an
area where lightning storms occur
frequently, but is not prone to direct
lightning strikes.
Best grounding practices must be closely
followed.
Medium to HighCommercial building contains a mix
of information technology equipment
and industrial equipment, such as
welding.
Best grounding practices must be closely
followed. Determine source and cause of
noise if possible, and mitigate as closely as
possible at the noise source or reduce
coupling from the noise source to the
victim equipment.
MediumExisting commercial building is not
subject to natural environmental noise
or man-made industrial noise. This
building contains a standard office
environment. This installation has a
history of malfunction due to
electromagnetic noise.
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
32
Preparing for Installation
System Grounding

Cisco Catalyst 9404R Switch Specifications

General

Brand	Cisco
Model	Catalyst 9404R Switch
Category	Switch
Language	English