JUNOS High Availability

Check Routing Engine and Storage Media

The purpose of this section is to check whether the RE and its storage media are working correctly.

Check Routing Engine Status

To check the general condition of the REs, use the show chassis routing-engine command. This command shows the status of both the primary and the backup REs. Here is sample output from an M40e router:

lab@r1-re0> show chassis routing-engine
Routing Engine status:
  Slot 0:
    Current state              Master
    Election priority          Master
    Temperature             27 degrees C / 80 degrees F
    DRAM                   768 MB
    Memory utilization      15 percent
    CPU utilization:
      User                   0 percent
      Background             0 percent
      Kernel                 3 percent
      Interrupt              1 percent
      Idle                  97 percent
    Model                      RE-2.0
    Serial ID                  6f000000b3a7e001
    Start time                 2009-03-16 17:34:30 CET
    Uptime                     2 days, 18 hours, 51 minutes, 37 seconds
    Load averages:             1 minute   5 minute  15 minute
                                   0.00       0.01       0.00
Routing Engine status:
  Slot 1:
    Current state              Backup
    Election priority          Backup
    Temperature             26 degrees C / 78 degrees F
    DRAM                   768 MB
    Memory utilization      14 percent
    CPU utilization:
      User                   0 percent
      Background             0 percent
      Kernel                 0 percent
      Interrupt              0 percent
      Idle                 100 percent
    Model                      RE-2.0
    Serial ID                  77000000b3a62d01
    Start time                 2009-03-16 16:02:43 CET
    Uptime                     2 days, 20 hours, 23 minutes, 23 seconds

Check Storage Media on Each Routing Engine

Use the show system storage command to display storage media and mounted filesystems. Check that the /var, /config, and / (root) directories are correctly mounted. Here is sample output from an M40e platform:

lab@r1-re0>