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

user@host> show chassis craft-interface

[...Output truncated...]

SFM LEDs:

  SFM  0   1   2   3

-----------------------

Amber  .   .   *   .

Green  *   *   .   *

Blue   *   *   .   * 

What it Means

The command output is for an M160 router. The SFMs in slots 0 and 1 are online and are 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.