T1600 Chassis Description - Juniper T1600 Hardware Manual

T1600 Core Router Hardware Guide
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T1600 Chassis Description

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Routing Engine. If the backup Routing Engine assumes mastership, packet forwarding
continues through the router without interruption. For more information about nonstop
active routing, see the Junos OS High Availability Configuration Guide.
NOTE: Nonstop active routing is supported for standalone T1600 routers
in Junos 8.5 and later. Nonstop active routing is supported for T1600 routers
in a routing matrix in Junos 10.0 and later.
SONET Clock Generators (SCGs)—The router has a standard configuration of one
SCG. A second can be purchased to function as backup. If one SCG fails, the other
becomes the master SCG. Mastership of the SCGs is independent of the host subsystem,
so routing functions are not affected.
Power supplies—The router has two power supplies, which share the load evenly. If
one power supply fails, the other power supply can provide full power to the router
indefinitely.
Cooling system—The cooling system has redundant components, which are controlled
by the host subsystem. If one of the fans fails, the host subsystem increases the speed
of the remaining fans to provide sufficient cooling for the router indefinitely.
T1600 System Architecture Description on page 7
T1600 Chassis Description on page 14
T1600 Midplane Description on page 16
The T1600 Core Router chassis is a rigid sheet metal structure that houses all the other
T1600 router components (see Figure 6 on page 15 and Figure 7 on page 16). The chassis
measures 37.45 in. (95.1 cm) high, 31 in. (78.7 cm) deep, and 17.43 in. (44.3 cm) wide. The
chassis can be installed into many types of racks or cabinets.
The chassis includes the following features (see Figure 6 on page 15 and Figure 7 on
page 16):
Front-mounting flanges for mounting in a four-post rack or cabinet or front-mounting
in an open-frame rack.
Center-mounting metal brackets for center-mounting in an open-frame rack.
Handles on each side to facilitate positioning the router in the rack. Do not use the
handles to lift the router.
Two electrostatic discharge (ESD) points (banana plug receptacles), one front and
one rear.
CAUTION: Before removing or installing components of a router, attach
an ESD strap to an ESD point and place the other end of the strap around
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