JUNOS Internet Software Network Operations Guide: Hardware
584 ! Monitoring Redundant SFM Status
Step 2: Display the SFM LED Status at the Command Line
Action To display the SFM LED status, use the following CLI command:
user@host> show chassis craft-interface
Sample Output For M40e routers:
user@host> show chassis craft-interface
[...Output truncated...]
SFM LEDs:
SFM 0 1
---------------
Amber . .
Green * *
Blue * .
For M160 routers:
user@host> show chassis craft-interface
[...Output truncated...]
SFM LEDs:
SFM 0 1 2 3
-----------------------
Amber . . * .
Green * * . *
Blue * * . *
What it Means In the sample output for an M160 router, the SFMs in slots 0 and 1 are online and
functioning normally. The status colors represent the possible SFM operating states:
Amber (Fail), Green (OK), and Blue (Master). The (*) indicates the current operating
state. There are no SFMs in slots 2 and 3.
Step 3: Check the SFM LED Status on the Faceplate
Action To check the SFM LED status, remove the component cover and look on the SFM
faceplate at the back of the M40e or M160 router. Table 124 describes the SFM LED
states.
Table 124: SFM LEDs
Color Label State Description
Green OK On steadily SFM is functioning
normally.
Blinking SFM is starting up.
Amber
FAIL On steadily SFM has failed.
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