Cisco 10720 - Manual (Page 7)

7
Rack Mounting Clearance Guidelines
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Rack Mounting Guidelines
Rack Mounting Clearance Guidelines
The rack-mounting hardware included with the Cisco 10720 Internet Router is suitable for most 19-inch
EIA, 23- or 24-inch EIA or ETSI equipment racks or telco-style racks.
The following are rack-mounting guidelines for the Cisco 10720 Internet Router:
• If you use a telco-style rack, be sure that the rack is bolted to the floor. The router mounts to the two
rack posts and the rest of the router is cantilevered off of the posts. (See
Figure 12 .)
• Some telco-style racks are secured to ceiling brackets, if necessary, because of the weight of the
equipment in the rack. Make sure that the rack you are installing the Cisco 10720 Internet Router in
is secure.
Note Warm air exhausts out the back of the router by drawing cool air in through vents located on the front of
the router chassis. Allow sufficient air flow by maintaining 6 inches (15.24 cm) of clearance at both the
inlet and exhaust openings on the router and 0.75 inches (19.1 mm) on each side of the router chassis.
(See
Figure 2 .)
Multiple Routers in a Rack Maintenance Guidelines
The Cisco 10720 Internet Router is 17.50 (44.45 cm) W x 3.45 (8.76 cm) H (2 RU) x 18.25 inches (46.36
cm) D. When the cable-management tray is installed the router is 21.80 inches (55.37 cm) D. When
placing multiple routers in a rack, ensure there is sufficient ventilation to accommodate each router.
The heated exhaust air from other equipment can enter the inlet air vents and cause an overtemperature
condition inside the router.
• Install and use the cable-management system included with the router to keep cables organized and
out of the way of line cards and power supply.
• Ensure that cables from other equipment do not interfere with access to the cards and LEDs located
in the front of the router.
• When mounting the router in a rack, be sure to use all of the screws provided to secure the router to
the rack posts.
Figure 3 illustrates the outer dimensions of the Cisco 10720 Internet Router.