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M7i Midplane Description on page 7
M7i FIC LEDs
Two large alarm LEDs are located on the right of the FIC (see Figure 9 on page 15 and
Figure 10 on page 15). The circular red LED lights to indicate a critical condition that can
result in a system shutdown. The triangular yellow LED lights to indicate a less severe
condition that requires monitoring or maintenance. Both LEDs can be lit simultaneously.
To deactivate red and yellow alarms, you must clear the condition that caused the alarm.
Table 4 on page 16 describes the alarm LEDs in more detail.
Table 4: Alarm LEDs
Description
State
Color
Shape
Critical alarm LED—Indicates a critical condition that
can cause the router to stop functioning, such as
component removal, failure, or overheating.
On steadily
Red
Warning alarm LED—Indicates a serious but nonfatal
error condition, such as a maintenance alert or a
significant increase in component temperature.
On steadily
Yellow
Table 5 on page 16 describes the FIC interface LEDs in more detail.
Table 5: FIC Interface LEDs
Description
State
Color
Label
The port is online.
On steadily
Green
LINK
The port is receiving data.
Blinking
Green
ACTIVITY
The port might be on, but is not receiving data.
Off
Related
Documentation
M7i Fixed Interface Card (FIC) Description on page 15
•
•
Connecting FIC and PIC Cables to the M7i Router on page 55
M7i PICs Description
PICs physically connect the router to network media. PICs receive incoming packets from
the network and transmit outgoing packets to the network, performing framing and
line-speed signaling for their media type as required. PICs also encapsulate outgoing
packets received from the Compact Forwarding Engine Board (CFEB) or Enhanced CFEB
(CFEB-E) before transmitting them. The controller ASIC on each PIC performs additional
control functions specific to the PIC media type.
Copyright © 2010, Juniper Networks, Inc.
16
M7i Multiservice Edge Router Hardware Guide
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