16 • Hardware Overview ULTRIX-FR12 Installation Guide (v4.0)
3. ENET Port LEDs
Table 4 describes the two ULTRIX-FR12 front panel LEDs that are used to monitor ethernet
communication activity of the router. When facing the front panel, the left LED reports the status
of the ENET 1 port while the right LED reports the status of the ENET 2 port. Refer to “Rear Panel
Overview” for details.
4. USB Port
This is an USB 3.0 Type A port and is reserved for future use.
Table 4 Front Panel LEDs
LED Status Description
ENET # Bright
Blue
A valid physical Ethernet connection is established, and the
port is active. There is data transfer activity on the
indicated Ethernet port.
Dim Blue A valid physical Ethernet connection is established, but the
port is not the active one. There is no data transfer activity
on the indicated Ethernet port.
Off No valid Ethernet connection to the indicated Ethernet
port.
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