Cisco XR 12404 - Manual (Page 55)

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Cisco XR 12404 Router Installation Guide
OL-13830-02
Chapter 2 Preparing for Installation
Installation Site Requirements
Rack Mounting Clearance
The rack-mounting hardware included with the Cisco XR 12404 Router is suitable
for most 19 inch equipment racks.
The following are rack-mounting guidelines for the Cisco XR 12404 Router.
• If you use a standard 19 inch racks be sure that the rack is bolted to the floor.
The chassis mounts to the two rack posts, and the rest of the chassis is
cantilevered off of the posts.
• Ensure that the weight of the Cisco XR 12404 Router does not make the rack
unstable.
• Some 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 XR 12404 Router in is secured.
• For the enhanced model of the Cisco XR 12404 Router, the mounting rails on
a 4-post rack must be recessed no more than 1.5 inches for the front door to
fully open and close and to provide adequate room for cable routing.
Multiple Routers in a Rack
One of the unique features of the Cisco XR 12404 Router is its size. Up to 8 Cisco
XR 12404 Routers can fit in a standard 19 inch equipment rack. When placing
multiple routers in a rack, ensure there is sufficient ventilation to accommodate
the 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 line card brackets and chassis cable-management bracket
included with the router to keep cables organized and out of the way of line
cards.
• Ensure that cables from other equipment do not interfere with access to the
card cage, or require you to disconnect cables unnecessarily to perform
equipment maintenance or upgrades.
• When mounting the router in a four-post type rack, be sure to use all of the
screws provided to secure the chassis to the rack posts.
todd.book Page 9 Monday, March 16, 2009 2:47 PM