Check the M40e and M160 Router Routing Engine LEDs

Check the host module LEDs on the upper right of the craft interface. Three LEDs—one green MASTER, one green ONLINE, and one red OFFLINE—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.

Figure 48 shows the host module LEDs on the M40e and M160 router craft interface.

Figure 48: M40e and M160 Router Redundant Host Module LEDs

Table 39 describes the host module LEDs.

Table 39: M40e and M160 Router 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.