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Accessing a Junos OS Device the First Time


Before proceeding with any new Junos OS device, be sure to follow the quick start and initial set-up instructions which came with the device.

When you power on a Junos OS device, Junos OS automatically boots and starts.

To configure the device initially, you must connect a terminal or laptop computer through the console port, which can vary in position and type, depending on the specific device model. Only console access to the device is enabled by default. Remote management access to the router and all management access protocols, including Telnet, FTP, and SSH, are disabled by default.

To access a Junos OS device for the first time:

  1. Connect a terminal or laptop computer to the Junos OS device through the console port.
  2. Power on the device and wait for it to boot.

    Junos OS boots automatically. The boot process is complete when you see the login: prompt on the console user interface.

  3. Log in as the user root.

    Initially, the root user account requires no password. You can see that you are the root user, because the prompt on the device shows the username root@%.

  4. Start the Junos OS command-line interface (CLI).
  5. Enter Junos OS configuration mode.