Cisco ASR 907, Руководство по установке оборудования

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Locating for Safety
If the Cisco ASR 907 Router is the heaviest or the only piece of equipment in the rack, consider installing it
at or near the bottom to ensure that the rack’s center of gravity is as low as possible.
For additional information about the proper placement of electronic equipment, consult the document
GR-63-CORE, Network Equipment Building System (NEBS) Requirements: Physical Protection.
Locating for Easy Maintenance
Keep at least 3 feet of clear space at the front and back of the rack. This space ensures that you can remove
the Cisco ASR 907 Router components and perform routine maintenance and upgrades easily.
Avoid installing the Cisco ASR 907 Router in a congested rack and consider how routing of cables from other
pieces of equipment in the same rack could affect access to the router cards.
The sides of the chassis must remain unobstructed to ensure adequate airflow and prevent overheating inside
the chassis.
Allow the following clearances for normal system maintenance:
• At the top of the chassis—At least 3 inches (7.6 cm)
• Sides of the chassis—3 to 4 ft (91.44 cm to 121.92 cm)
To avoid problems during installation and ongoing operations, follow these general precautions when you
plan equipment locations and connections:
• Use the show environment all command regularly to check the internal system status. The environmental
monitor continually checks the interior chassis environment; it provides warnings about high temperature
and creates reports on other potentially dangerous occurrences. If warning messages are displayed, take
immediate action to identify the cause, and correct the problem.
• Keep the Cisco ASR 907 Router off the floor and out of areas that collect dust.
• Follow ESD-prevention procedures to avoid damage to equipment. Damage from static discharge can
cause immediate or intermittent equipment failure.
Locating for Proper Airflow
Ensure that the Cisco ASR 907 Router location has enough airflow to keep the system operating within the
environmental characteristics and the air temperature is sufficient to compensate for the heat dissipated by
the system. For more information, see
Air Flow Guidelines .
Installation Checklist
To assist you with your installation and to provide a record of what was done by whom and when, photocopy
the Cisco ASR 907 Router Installation Checklist shown in the tabl below. Use this to record the completion
and verification of each procedure. After the checklist is completed, place it in your Site Log along with the
other records pertaining to your new Cisco router.
Table 6: Cisco ASR 907 Router Installation Checklist
Date Verified By Task
Date on which chassis received
Chassis and all accessories unpacked
Cisco ASR 907 Router Hardware Installation Guide
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Preparing for Installation
Locating for Safety