Table 17: Basic Tools for Monitoring Router Components (continued)
Purpose
Router Component Monitor
Tool
Router components have faceplates with LEDs that display
the component status:
•
M5 and M10 routers: PICs and power supplies
•
M7i router: Compact Forwarding Engine Board (CFEB), PICs,
Fixed Interface Cards (FICs) (Fast Ethernet and Gigabit
Ethernet), and power supplies
•
M10i router: CFEB, High-Availability Chassis Manager (HCM),
and power supplies
•
M20 router: System and Switch Boards (SSBs) and power
supplies
•
M40 router: System Control Boards (SCBs) and power
supplies
•
M40e router: Switching and Forwarding Modules (SFMs),
Packet Forwarding Engine Clock Generators (PCGs),
Miscellaneous Control Subsystem (MCS), and power
supplies
•
M120 router: Forwarding Engine Board (FEB), Routing Engine
and Control Boards, and power supplies
•
M160 router: SFMs, PCGs, MCS, and power supplies
•
M320 router: SIBs, Control Boards, and power supplies
•
T320, T640, T1600 routers: SIBs, Control Boards, SONET
Clock Generators (SCGs), and power supplies
•
TX Matrix router: SIBs, Control Boards, power supplies,
Routing Engines
•
TX Matrix Plus router: SIBs, Control Boards, Control Interface
Panel, power supplies, Routing Engines
To display some router component LED status, use the
following command:
show chassis craft-interface
Router component LEDs
The messages system log file records the messages generated
by component operational events, including error messages
generated by component failures. To view the messages log
file, use the following command:
show log messages
To monitor the messages log file in real time, use the following
command:
monitor start messages
To stop monitoring the messages log file, use the following
command:
monitor stop messages
messagessystem log file
55Copyright © 2012, Juniper Networks, Inc.
Chapter 3: Method and Tools for Monitoring Router Components