Midplane; J4300 And J6300 Routing Engine - Juniper J2300 User Manual

Table 13: J4300 and J6300 Physical Specifications
Description Value
Chassis dimensions
Router weight

Midplane

The midplane is located in the center of the chassis and forms the rear of
the PIM card cage (see Figure 9). You install the PIMs into the midplane
from the front of the chassis. Data packets are transferred across the
midplane from the PIM to the Routing Engine, and from the Routing
Engine across the midplane to the destination PIM.

J4300 and J6300 Routing Engine

The Routing Engine provides three main functions:
The Routing Engine consists of the following components:
3.50 in. (8.9 cm) high
17.00 in. (43.2 cm) wide—19 in. (48.3 cm) wide with mounting brackets attached
19.00 in. (48.3 cm) deep—plus 0.5 in. (1.27 cm) of hardware that protrudes from the
chassis front
J4300 router minimum configuration (no PIMs): 18 lb (8.2 kg)
J4300 router maximum configuration (six PIMs): 21 lb (9.5 kg)
J6300 router minimum configuration (no PIMs and one power supply): 18.5 lb (8.4 kg)
J6300 router maximum configuration (six PIMs and two power supplies): 24 lb (10.9 kg)
Creates the packet forwarding switch fabric for the Services Router, providing
route lookup, filtering, and switching on incoming data packets, then directing
outbound packets to the appropriate interface for transmission to the network.
Maintains the routing tables used by the router and controls the routing
protocols that run on the router.
Provides control and monitoring functions for the router, including controlling
power and monitoring system status.
Processor—Creates the packet forwarding switch fabric for the router and runs
JUNOS Internet software to maintain the router's routing tables and routing
protocols. The Routing Engine has a Pentium-class processor.
DRAM—Buffers incoming packets and provides storage for the routing and
forwarding tables and for other Routing Engine processes.
Compact flash drive—Provides primary storage for software images,
configuration files, and microcode. The compact flash drive is accessible
from the rear of the router, and is field-replaceable. For information about
J4300 and J6300 Services Router Hardware Features
System Overview
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