Mx240 Component Redundancy - Juniper MX240 Hardware Manual

MX240 5G Universal Routing Platform Hardware Guide
Table 5: MX240 Router Hardware Components and CLI Terminology (continued)
Component Hardware Model Number
AC power supply PWR-MX480-AC
PWR-MX480-1200-AC
PWR-MX480-2520-AC
DC power supply PWR-MX480-DC
PWR-MX480-1600-DC
PWR-MX480-2400-DC
Power supply blank PWR-BLANK-MX960
panel
See Also

MX240 Component Redundancy

34
MX240 System Overview on page 27
MX240 DPC Port and Interface Numbering on page 95
MX240 MIC Port and Interface Numbering on page 124
MX240 PIC Port and Interface Numbering on page 105
MX Series Router Interface Names
The MX240 chassis provides redundancy and resiliency. The hardware system is fully
redundant, including power supplies, Routing Engines, and SCBs.
A fully configured router is designed so that no single point of failure can cause the entire
system to fail. Only a fully configured router provides complete redundancy. All other
configurations provide partial redundancy. The following major hardware components
are redundant:
Host subsystem—The host subsystem consists of a Routing Engine functioning together
with an SCB. The router can have one or two host subsystems. If two host subsystems
are installed, one functions as the master and the other functions as the backup. If the
master host subsystem (or either of its components) fails, the backup can take over
as the master. To operate, each host subsystem requires a Routing Engine installed
directly into in an SCB.
In the high-line (220 V) AC power configuration, the MX240 router contains one or two
AC power supplies, located horizontally at the rear of the chassis in slots
PEM2 (left to right). The high-line configuration requires one power supply, with the
second power supply providing redundancy. Each AC power supply provides power to
CLI Name
AC Power Entry Module
PS 1.2-1.7kW 100-240V AC
in
PS 1.4-2.52kW; 90-264V AC
in
DC Power Entry Module
DC Power Entry Module
DC 2.4kW Power Entry
Module
N/A
Copyright © 2019, Juniper Networks, Inc.
Description
"MX240 AC Power Supply
Description" on page 42
"MX240 DC Power Supply
Description" on page 48
"MX240 Power System
Description" on page 41
and
PEM0