Routing Engine Interface Ports and Status Indicators

In the center of the Routing Engine are three ports that connect the Routing Engine to one or more external devices on which system administrators can issue JUNOS command-line interface (CLI) commands to manage the device (see Figure 10).

The ports with the indicated labels function as follows:

• AUX—Connects the Routing Engine to a laptop, modem, or other auxiliary device through a cable with an RJ-45 connector.
• CONSOLE—Connects the Routing Engine to a system console through a cable with an RJ-45 connector.
• ETHERNET—Connects the Routing Engine through an Ethernet connection to a management LAN (or any other device that plugs into an Ethernet connection) for out-of-band management. The port uses an autosensing RJ-45 connector to support10-Mbps or 100-Mbps connections. Two small LEDs on the top of the port indicate the connection in use: the LED flashes yellow or green for a 10-Mbps or 100-Mbps connection, and the LED is light green when traffic is passing through the port.

For information about the pinouts for the connectors, see Cable Connector Pinouts.