Rack Requirements For The M320 Router - Juniper M320 Hardware Manual

M320 Router Hardware Guide
Table 14: Site Preparation Checklist (continued)
Item or Task
Plan rack location, including required space
clearances.
If a rack is used, secure rack to floor and building
structure.
Cables
Acquire cables and connectors:
Determine the number of cables needed
based on your planned configuration.
Review the maximum distance allowed for
each cable. Choose the length of cable based
on the distance between the hardware
components being connected.
Plan the cable routing and management.
Related
Documentation

Rack Requirements for the M320 Router

42
All manuals and user guides at all-guides.com
For More Information
"M320 Clearance Requirements" on
page 44
"Rack Requirements for the M320
Router" on page 42
"Calculating Power Budget for
Fiber-Optic Cable for M Series, MX
Series, and T Series Routers" on
page 261
"Calculating Power Margin for
Fiber-Optic Cable for M Series, MX
Series, and T Series Routers" on
page 262
"Maintaining M320 PICs and PIC
Cables" on page 119
M320 Chassis Lifting Guidelines on page 216
General Safety Guidelines for M Series, MX Series, and T Series Routers on page 211
Maintenance and Operational Safety Warnings for M Series, MX Series, and T Series
Routers on page 225
The router can be installed in many types of racks, including four-post (telco) racks and
open-frame racks. An example of an open-frame rack is shown in Figure 21 on page 43.
For open-frame racks, center-mounting is preferable to front-mounting because the
more even distribution of weight provides greater stability.
The router is designed for installation in a 19-in. rack as defined in Cabinets, Racks, Panels,
and Associated Equipment (document number EIA-310-D) published by the Electronics
Industry Association (
http://www.eia.org
With the use of adapters, the router can fit into a 600-mm-wide rack or cabinet, as
defined in the four-part Equipment Engineering (EE); European Telecommunications
Standard for Equipment Practice (document numbers ETS 300 119-1 through 119-4)
published by the European Telecommunications Standards Institute (
Use approved wing devices to narrow the opening between the rails.
The rack rails must be spaced widely enough to accommodate the router chassis's
external dimensions: 34.80 in. (88.4 cm) high, 25.64 in. (65.1 cm) deep, and
17.43 in. (44.3 cm) wide, excluding the front and rear cable management systems. The
Performed By
).
Copyright © 2010, Juniper Networks, Inc.
Date
).
http://www.etsi.org