Routing Engine Interface Ports and Status Indicators

To the right of the alarm LEDs on the craft interface are two sets of ports for connecting the Routing Engines to one or more external devices on which system administrators can issue JUNOS command-line interface (CLI) commands to manage the router (see Figure 16). The upper set of ports connects to the Routing Engine in the upper Routing Engine slot (RE0), and the lower set connects to the Routing Engine in the lower Routing Engine slot (RE1).

The ports with the indicated label in each set function as follows:

• AUX/MODEM— Connects the Routing Engine to a laptop, modem, or other auxiliary device through an RS-232 (EIA-232) serial cable.
• MGMT—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 support both 10- and 100-Mbps connections.

  To the left of each MGMT port is a link status indicator, which lights to show that a link has been established over the Ethernet connection. To the right of each MGMT port is an activity indicator, which flashes when data is being transferred.

• CONSOLE—Connects the Routing Engine to a system console through an RS-232 (EIA-232) serial cable.

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