Checking the Host Module Status

Action

To check the host module status, use the following JUNOS software command-line interface (CLI) operational mode command:

user@host> show chassis craft-interface

Output

user@host> show chassis craft-interface

[...Output truncated...]

Front Panel System LEDs:

Host     0    1

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

OK       *    .

Fail     .    .

Master   *    .

[...Output truncated...]

What It Means

(M40e and M160 routers) The Front Panel System LEDs show the Routing Engine Host 0 and Host 1 LED state. The state can be OK, Fail, or Master. An asterisk (*) indicates the operating state.

Alternative Action

Look at the LEDs on the craft interface.

The host module LEDs are located on the upper right corner of the craft interface. Two sets of LEDs indicate the host module status: the set labeled HOST0 reports the status of the Routing Engine in slot RE0 and the MCS in slot MCS0, while the set labeled HOST1 reports the status of the Routing Engine in slot RE1 and the MCS in slot MCS1. Each set includes three LEDs: MASTER (green), ONLINE (green), and OFFLINE (red).

Figure 143 shows the M40e and M160 router craft interface LEDs.

Figure 143: M40e and M160 Router Host Module LEDs on the Craft Interface

Table 83 describes the M40e and M160 router host module LED states.

Table 83: M40e and M160 Router Host Module LEDs

Label	Color	State	Description
MASTER	Green	On steadily	Host module is functioning as master.
ONLINE	Green	On steadily	Host module components (Routing Engine and MCS) are installed and functioning normally.
		Blinking	Host module is starting up.
OFFLINE	Red	On steadily	One or both host module components are not installed or have failed.