Rack Requirements for an EX 8200 series Switch
You can mount EX 8208 switches on four-post
racks or two-post racks. See Figure 1 and Figure 2.
Rack requirements consist of:
- Rack type
- Mounting bracket hole spacing
- Rack size and strength
- Rack connection to the building structure
Table 1 summarizes rack requirements and specifications for EX 8200
Figure 1 shows
four-post rack installation. Figure 2 shows two-post rack
Table 1: Rack Requirements and Specifications for an EX 8200 series
Rack type and mounting bracket hole spacing
Use a four-post rack or a two-post rack. You can mount
the switch on any four-post or two-post rack that provides bracket
holes or hole patterns spaced at 1 U (1.75 in./4.44 cm) increments
and that meets the size and strength requirements specified in this
A U is the standard rack unit defined in Cabinets,
Racks, Panels, and Associated Equipment (document number
EIA-310–D) published by the Electronics Industry Association
You can stack three EX 8208 switches in a four-post rack that
has at least 42 U; if you install the optional power cord tray, a
minimum of 45 U are required. You can stack three EX 8208 switches
in a two-post rack that has 45 U (installing the power cord tray is
mandatory for two-post rack installations). In all cases, the rack
must meet the strength requirements to support the weight.
Rack size and strength
- 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 Industry Association
- Ensure that the rack is one of the following standard
- 23.62 in. (600 mm)
- 30.0 in. (762 mm)
- 21.5 in. (800 mm)
- Ensure that the rack rails are spaced widely enough to
accommodate the EX 8208 switch chassis' external dimensions of 24.25
in. (61.6 cm) height, 17.25 in. (43.815 cm) width, 20 in. (50.8 cm)
depth. The outer edges of the front-mounting brackets extend the width
to 19 in. (48.3 cm).
- The EX 8208 switch chassis height of 24.25 in. (61.6 cm)
is approximately 14 U. If you install the power cord tray (optional
for four-post rack installations, mandatory for two-post rack installations),
the chassis and power cord tray consume 15 U.
- The rack must be strong enough to support the weight of
the fully configured switch. A fully configured EX 8208 switch weighs
up to 284 lb (130 kg). If you stack three fully configured EX 8208
switches in one rack, that rack must support up to 852 lb (487 kg).
- Ensure that the spacing of rails and adjacent racks allows
for the proper clearance around the switch and rack as specified in Clearance Requirements for Airflow and Hardware Maintenance for an EX 8208 Switch.
Rack connection to the building structure
- Secure the rack to the building structure.
- If earthquakes are a possibility in your geographical
area, secure the rack to the floor.
- Secure the rack to the ceiling brackets as well as wall
or floor brackets for maximum stability.
Figure 1: Installing an
EX 8208 Switch in a Four-Post Rack
Figure 2: Installing an EX 8208
Switch in a Two-Post Rack