Juniper QFX5200 Hardware Manual page 21

Table 4: Network Port LEDs on QSFP28 Ports on a QFX5200-32C and QFX5200-32C-L Switch
Color State QFX5200-32C and QFX5200-32C-L Description
Unlit Off The port is administratively disabled, there is no power, the link is down, or there is a
fault.
When configured for 25-Gigabit Ethernet, the LED remains unlit only if all four of the
25-Gigabit Ethernet QSFP+ breakout links are down.
Green On A link is established, but there is no link activity.
steadily
When configured for 25-Gigabit Ethernet, the LED is lit green when at least one of the
four 25-Gigabit Ethernet QSFP+ breakout links is established.
Blinking A link is established, and there is link activity.
When configured for 25-Gigabit Ethernet, the LED is lit green when at least one of the
four 25-Gigabit Ethernet QSFP+ breakout links is established.
Amber Blinking The beacon is enabled on the port.
As shown in Table 5 on page
used and the remaining LEDs are not used when the interface is configured for 100-Gigabit Ethernet
and connected to a QSFP28 transceiver. All four LEDs are used when the interface is configured for 25-
Gigabit Ethernet and the port is connected using an optical splitter cable or a copper DACBO cable.
Table 5 on page 12 describes how to interpret the QSFP+ LEDs.
Table 5: Network Port Link/Activity LEDs on QSFP+ Ports on a QFX5200-32C and QFX5200-32C-L
Color State
Unlit Off
12, there are four bi-color LEDs for each QSFP+ port. The first LED is
Description
The port is administratively disabled, there is no power, the link is down,
or there is a fault.
NOTE: When configured for 10-Gigabit Ethernet, the LED remains unlit
only if all four of the 10-Gigabit Ethernet SFP+ breakout links are down.
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