Juniper MX204 Hardware Manual page 60

Table 21: Rack Requirements and Specifications for an MX204 Router (continued)
Rack Requirement
Rack size and strength
Rack connection to the building
structure
SEE ALSO
MX204 Installation Overview | 77
Guidelines
Ensure that the rack is a 19-in. rack as defined in Cabinets, Racks, Panels, and
Associated Equipment (document number EIA-310–D) published by the
Electronics Components Industry Association (http://www.ecianow.org/).
Ensure that the rack is one of the following standard lengths:
23.6 in. (600 mm)
30.0 in. (762 mm)
31.5 in. (800 mm)
The rack rails must be spaced widely enough to accommodate the router
chassis's external dimensions (see
on page 55). The outer edges of the mounting brackets extend the width to
19 in. (48.3 cm). The spacing of rails and adjacent racks must also allow for
the clearances around the router and rack.
The router ships with the front-mounting brackets fixed in the front-mount
position on the chassis. You can move the rear-mounting brackets based on
the depth of the rack.
The chassis height of 1.72 in. (4.37 cm) is approximately 1 U (rack unit).
The rack must be strong enough to support the weight of the fully configured
router, up to 22.7 lb (10.3 kg).
Either end of the router must be mounted flush with the rack and still be
adjustable for racks with different depths. The front and rear rack rails must
be spaced between 23.62 in. (600 mm) and 31.5 in. (800 mm) front to back.
Ensure that the spacing of rails and adjacent racks allows for the proper
clearance around the router and rack.
Secure the rack to the building structure.
If earthquakes are a possibility in your geographic area, secure the rack to
the floor.
Secure the rack to the ceiling brackets as well as wall or floor brackets for
maximum stability.
"MX204 Router Physical Specifications"
62