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Accessing a Junos OS Device the First Time

 

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

To configure the device initially, you must connect a terminal or laptop computer to the device through the console port—a serial port on the front of the router. 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 the first time:

  1. Connect a terminal or laptop computer to the Junos OS device through the console port—a serial port on the front of the device.
  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.

  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.