Step 2: Check the Component LEDs

Action

To check the component LED status, do one of the following:

• Use the following CLI command:

user@host> show chassis craft-interface

The output shows the messages that are currently displayed on the craft interface (for routers that have a display on the craft interface).

For examples of sample output, see the JUNOS System Basics and Services Command Reference.

• Physically look at the craft interface. You see the following component LEDs: Routing Engine, FPCs, PICs, host module (for M40e and M160 routers), and host subsystem and SIB (for T-series platforms).
• Look at the LEDs on the component faceplate. Figure 25 describes where the LEDs are located on the router or platform.

Table 25: Component LED Location on the Router or Platform

Component	LED Location on the Router	Router or Platform
CB	On the Control Board (CB) faceplate.	T320 router and T640 routing node
FPC	On the FPC faceplate at the front of the router.	M20, M40, M40e, and M160 routers
Host module	On the craft interface. Remove the component cover.	M40e and M160 routers
MCS	On the Miscellaneous Control System (MCS) faceplate at the rear of the router. Remove the component cover.	M40e and M160 routers
PIC	On the craft interface. On the PIC faceplate at the front of the router.	M5 and M10 routers All other routers
PCG	On the PFE clock generator (PCG) faceplate at the rear of the router. Remove the component cover.	M40e and M160 routers
Power supply	On the power supply faceplate at the bottom rear of the router.	All routers
Routing Engine	On the rear Routing Engine panel. On the craft interface.	M20 router M20, M40, M40e, and M160 routers
SCB	On the System Control Board (SCB) faceplate at the front of the router, vertical in the middle of the FPC card cage.	M40 router
SCG	On the SONET Clock Generator (SCG) faceplate.	T320 router and T640 routing node
SFM	On the Switching and Forwarding Module (SFM) faceplate at the rear of the router. Remove the component cover.	M40e and M160 routers
SIB	On the SIB faceplate.	T320 router and T640 routing node
SSB	On the System and Switch Board (SSB) faceplate at the top front of the router.	M20 router