Extreme 10808 安装指南

Extreme Networks Consolidated XOS Hardware Installation Guide

Use distribution racks that meet the following mechanical recommendations:

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Use an open style, 19-inch (48.26 cm) rack to facilitate easy maintenance and to provide proper 
ventilation.

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Use a rack made of steel or aluminum.

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The rack should use the universal mounting rail hole pattern that is identified in IEC Standard 297.

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The rack should have designated earth grounding connections (typically on the base).

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The rack must meet earthquake safety requirements equal to that of the installed chassis.

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The mounting holes should be flush with the rails to accommodate the chassis.

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Install equipment into the lower half of the rack first to avoid making the rack top-heavy.

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The rack should support approximately 600 pounds (272 kilograms).

Use a rack grounding kit and a ground conductor that is carried back to earth or to another suitable 
building ground.

All Extreme Networks switches are designed with mounting brackets that provide solid metal-to-metal 
connection to the rack. If you do not use equipment racks, you can attach wiring terminals directly to 
the mounting brackets for appropriate grounding. Extreme Networks switches have grounding 
terminals that are mounted on the back of the chassis.

At minimum, follow these guidelines to ground equipment racks to the earth ground:

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CAD weld appropriate wire terminals to building I-beams or earth ground rods.

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Use 8 AWG copper stranded wire. 

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Drill and tap wire terminals to equipment racks.

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Position the earth ground as close to the equipment rack as possible to maintain the shortest wiring 
distance possible.

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Use a ground impedance tester or micro-ohm meter to test the quality of earth ground connection at 
the chassis. This will insure good grounding between the chassis, rack, and earth ground.

Provide enough space in front of and behind the switch so that you can service it easily. Allow a 
minimum of 48 inches (122 cm) in front of the rack and 24 inches (61 cm) behind the rack. When using a 
relay rack, provide a minimum of 24 inches (61 cm) of space behind the mounted equipment. Extra 
room on each side is optional.