Powering Off A Qfx5200 - Juniper QFX5200 Hardware Manual

equipment. Any wear and tear due to frequent plugging and unplugging is then absorbed by the
short fiber extension, which is easier and less expensive to replace than the instruments.
• Keep fiber-optic cable connections clean. Microdeposits of oil and dust in the canal of the transceiver
or cable connector can cause loss of light, reduction in signal power, and possibly intermittent
problems with the optical connection.
• To clean the transceiver canal, use an appropriate fiber-cleaning device such as RIFOCS Fiber
Optic Adaptor Cleaning Wands (part number 946). Follow the instructions in the cleaning kit you
use.
• After cleaning the transceiver, make sure that the connector tip of the fiber-optic cable is clean.
Use only an approved alcohol-free fiber-optic cable cleaning kit such as the Opptex Cletop-
®
S Fiber Cleaner. Follow the instructions in the cleaning kit you use.
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Powering Off a QFX5200

Before you remove the power cord to power off a QFX5200:
• Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD)
damage. See "Prevention of Electrostatic Discharge Damage" on page
• Ensure that you do not need to forward traffic through the switch.
NOTE: Use the following procedure to turn off power on a QFX5200 standalone switch.
Ensure that you have the following parts and tools available to power off the switch:
• An ESD grounding strap
• An external management device such as a PC
• An RJ-45 to DB-9 rollover cable to connect the external management device to the console port
To power off a QFX5200 switch:
1. Connect to the switch using one of the following methods:
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