Technical Documentation

Checking the Status of a Device Running JUNOS Software

You can use show commands to check the status of the device and monitor the activities on the device.

To help you become familiar with show commands:

  • Type show ? to display the list of show commands you can use to monitor the router:

    root@> show ?
    Possible completions:
      accounting           Show accounting profiles and records
      aps                  Show Automatic Protection Switching information
      arp                  Show system Address Resolution Protocol table entries
      as-path              Show table of known autonomous system paths
      bfd                  Show Bidirectional Forwarding Detection information
      bgp                  Show Border Gateway Protocol information
      chassis              Show chassis information
      class-of-service     Show class-of-service (CoS) information
      cli                  Show command-line interface settings
      configuration        Show current configuration
      connections          Show circuit cross-connect connections
      dvmrp                Show Distance Vector Multicast Routing Protocol        info
      dynamic-tunnels      Show dynamic tunnel information information
      esis                 Show end system-to-intermediate system information
      firewall             Show firewall information
      helper               Show port-forwarding helper information
      host                 Show hostname information from domain name server
      igmp                 Show Internet Group Management Protocol information
      ike                  Show Internet Key Exchange information
      ilmi                 Show interim local management interface information
      interfaces           Show interface information
      ipsec                Show IP Security information
      ipv6                 Show IP version 6 information
      isis                 Show Intermediate System-to-Intermediate System info
      l2circuit            Show Layer 2 circuit information
      l2vpn                Show Layer 2 VPN information
      lacp                 Show Link Aggregation Control Protocol information
      ldp                  Show Label Distribution Protocol information
      link-management      Show link management information
      llc2                 Show LLC2 protocol related information
      log                  Show contents of log file
      mld                  Show multicast listener discovery information
      mpls                 Show Multiprotocol Label Switching information
      msdp                 Show Multicast Source Discovery Protocol information
      multicast            Show multicast information
      ntp                  Show Network Time Protocol information
      ospf                 Show Open Shortest Path First information
      ospf3                Show Open Shortest Path First version 3 information
      passive-monitoring   Show information about passive monitoring
      pfe                  Show Packet Forwarding Engine information
      pgm                  Show Pragmatic Generalized Multicast information
      pim                  Show Protocol Independent Multicast information
      policer              Show interface policer counters and information
      policy               Show policy information
      ppp                  Show PPP process information
      rip                  Show Routing Information Protocol information
      ripng                Show Routing Information Protocol for IPv6 info
      route                Show routing table information
      rsvp                 Show Resource Reservation Protocol information
      sap                  Show Session Announcement Protocol information
      security             Show security information
      services             Show services information
      snmp                 Show Simple Network Management Protocol information
      system               Show system information
      task                 Show routing protocol per-task information
      ted                  Show Traffic Engineering Database information
      version              Show software process revision levels
      vpls                 Show VPLS information
      vrrp                 Show Virtual Router Redundancy Protocol information
  • Use the show chassis routing-engine command to view the Routing Engine status:

    root@> show chassis routing-engine
    Routing Engine status:
      Slot 0:
        Current state                  Master
        Election priority              Master (default)
        Temperature                 31 degrees C / 87 degrees F
        CPU temperature             32 degrees C / 89 degrees F
        DRAM                       768 MB
        Memory utilization          84 percent
        CPU utilization:
          User                       0 percent
          Background                 0 percent
          Kernel                     1 percent
          Interrupt                  0 percent
          Idle                      99 percent
        Model                          RE-2.0
        Serial ID                      b10000078c10d701
        Start time                     2005-12-28 13:52:00 PST
        Uptime                        12 days, 3 hours, 44 minutes, 19 seconds
        Load averages:                 1 minute   5 minute  15 minute
                                           0.02       0.01       0.00
  • Use the show system storage command to view available storage on the device:

    root@> show system storage
    Filesystem        Size       Used     Avail  Capacity   Mounted on
    /dev/ad0s1a       865M       127M      669M       16%  /
    devfs             1.0K       1.0K        0B      100%  /dev
    devfs             1.0K       1.0K        0B      100%  /dev/
    /dev/md0          30M        30M         0B      100%  /packages/mnt/jbase
    /dev/md1          158M       158M        0B      100%  /packages/mnt/jkernel-9.3B1.5
    /dev/md2          16M        16M         0B      100%  /packages/mnt/jpfe-M7i-9.3B1.5
    /dev/md3          3.8M       3.8M        0B      100%  /packages/mnt/jdocs-9.3B1.5
    /dev/md4          44M        44M         0B      100%  /packages/mnt/jroute-9.3B1.5
    /dev/md5          12M        12M         0B      100%  /packages/mnt/jcrypto-9.3B1.5
    /dev/md6          25M        25M         0B      100%  /packages/mnt/jpfe-common-9.3B1.5
    /dev/md7          1.5G       196K      1.4G        0%  /tmp
    /dev/md8          1.5G       910K      1.4G        0%  /mfs
    /dev/ad0s1e       96M        38K        88M        0%  /config
    procfs            4.0K       4.0K        0B      100%  /proc
    /dev/ad1s1f       17G        2.6G       13G       17%  /var

Published: 2010-01-17