Step 3: Check the Companion Routing Engine Status

The HCM in the slot labeled HCM0 is paired with the Routing Engine in the slot labeled RE0. Likewise, the HCM in the slot labeled HCM1 is paired with the Routing Engine in the slot labeled RE1. By default, the HCM in the slot labeled HCM0 is the master.

When HCM mastership changes because of failure, Routing Engine mastership changes as well.

Action

To check Routing Engine status, use the following CLI command:

user@host> show chassis routing-engine

Sample Output

user@host> show chassis routing-engine 

Routing Engine status:

  Slot 0:

    Current state                  Master

    Election priority              Master (default)

    Temperature                 36 degrees C / 96 degrees F

    CPU temperature             35 degrees C / 95 degrees F

    DRAM                       256 MB

    Memory utilization          37 percent

    CPU utilization:

      User                       0 percent

      Background                 0 percent

      Kernel                     6 percent

      Interrupt                  0 percent

      Idle                      93 percent

    Model                          RE-5.0

    Serial ID                      1000488824

    Start time                     2004-09-28 03:06:10 PDT

    Uptime                        13 days, 10 hours, 36 minutes, 22 seconds

    Load averages:                 1 minute   5 minute  15 minute

                                       0.22       0.06       0.02

Routing Engine status:

  Slot 1:

    Current state                  Backup

    Election priority              Backup (default)

    Temperature                 35 degrees C / 95 degrees F

    CPU temperature             32 degrees C / 89 degrees F

    DRAM                       256 MB

    Memory utilization          28 percent

    CPU utilization:

      User                       0 percent

      Background                 0 percent

      Kernel                     1 percent

      Interrupt                  0 percent

      Idle                      99 percent

    Model                          RE-5.0

    Serial ID                      1000485860

    Start time                     2004-09-11 01:01:02 PDT

    Uptime                        30 days, 12 hours, 41 minutes, 15 seconds

What It Means

The command output displays the operating state of both Routing Engines installed in the router chassis, including slot number, current state, and default election priority—master or backup. The command output also displays the Routing Engine temperature, amount of memory, and the percentage of memory and CPU utilization. The command output displays the Routing Engine model number, serial number ID, start time, and total operating time.

Alternative Action

Look at the Routing Engine LEDs by using the show chassis routing-engine CLI command or by looking at the component faceplate at the front of the router. The Routing Engine has four LEDs that tell operating status: agreen LED labeled HDD, a blue LED labeled MASTER, a red LED labeled FAIL, and a green LED labeled ONLINE. Table 102 describes the Routing Engine LED states.

Table 102: Routing Engine LEDs

Label	Color	State	Description
HDD	Green	Blinking	There is read/write activity on the PC card.
MASTER	Blue	On steadily	Routing Engine is functioning as master.
FAIL	Red	On steadily	Routing Engine is not operational..
ONLINE	Green	On steadily	Routing Engine is running normally.