Mx240 Host Subsystem Leds; Mx240 Midplane Description - Juniper MX240 Hardware Manual

MX240 Host Subsystem LEDs

Each host subsystem has three LEDs that display its status. The host subsystem LEDs are located in the
middle of the craft interface. For more information, see
on page 40.

MX240 Midplane Description

The midplane is located toward the rear of the chassis and forms the rear of the card cage (see
Figure 21 on page 68). The line cards and SCBs install into the midplane from the front of the chassis, and
the power supplies install into the midplane from the rear of the chassis. The cooling system components
also connect to the midplane.
The midplane performs the following major functions:
Data path—Data packets are transferred across the midplane between the line cards through the fabric
ASICs on the SCBs.
Power distribution—The router power supplies connect to the midplane, which distributes power to all
the router components.
Signal path—The midplane provides the signal path to the line cards, SCBs, Routing Engines, and other
system components for monitoring and control of the system.
Figure 21: Midplane
"MX240 Component LEDs on the Craft Interface"
68