Step 2: Check the MCS Status from the Craft Interface

Action

To display the MCS LED status from the craft interface, use the following JUNOS software operational mode CLI command:

user@host> show chassis craft-interface

Sample Output

user@host> show chassis craft-interface

[...Output truncated...] 

MCS and SFM LEDs:

MCS    0   1      SFM    0   1   2   3

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

Amber      .             .   .

Green      .             .   .

Blue       *             *   *

What It Means

If the amber FAIL LED is on, check for current MCS alarms.

Alternative Action

Look at the Host Module LEDs on the craft interface. The LEDs indicate the MCS status. (See Figure 150.)

Figure 150: M40e and M160 Router Craft Interface Host Module LEDs

Three host module LEDs—one green MASTER, one green ONLINE, and one red OFFLINE—located on the upper right of the craft interface indicate the status of each host module. The LEDs marked HOST0 show the status of the Routing Engine in slot RE0 and the MCS in slot MCS0. The LEDs marked HOST1 show the status of the Routing Engine in slot RE1 and the MCS in slot MCS1.

Table 87 describes the functions of the host module LEDs.

Table 87: Host Module LEDs

Label	Shape	Color	State	Description
MASTER		Green	On steadily	Host module (Routing Engine and MCS) is functioning as master.
ONLINE		Green	On steadily	Host module is present and operational.
			Blinking	Host module is starting up.
OFFLINE		Red	On steadily	Host module is not present, or is present but not operational.