Junos OS Configuration from External Devices
You can configure Junos OS network device from a system console connected to the console port or by using Telnet to access the device remotely. External management hardware can be connected to the Routing Engine and the Junos OS through these ports:
Ethernet management port
See hardware guide for your particular Junos OS device for instructions about how to connect external hardware to the console, auxiliary, and/or Ethernet management ports. Capabilities and features can vary depending on device model.