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Monitor the Switch
SFP+/SFP28 Port LEDs for the 8520-48Y
Each port has one LED to indicate link or activity. The following table describes the states for the LED.
Table 11: SFP+/SFP28 Port LEDs for the 8520-48Y
LED
Link/Activity
1G/10G RJ45 Port LEDs for the 8520-48XT
Each port has one LED to indicate link or activity. The following table describes the states for the LED.
Table 12: 1G/10G RJ45 Port LEDs for the 8520-48XT
LED
Link/Activity
QSFP28 Port LEDs
Each QSFP28 port has four green LEDs. The following table describes the states for the LEDs.
Table 13:
Port Configuration
100 Gb or 40 Gb
State
Green
Blinking green
Blinking slowly green
Off
State
Green
Blinking green
Blinking slowly green
Off
LEDs
1st LED
Extreme 8520 Series Hardware Installation Guide
SFP+/SFP28 Port LEDs for the 8520-48Y
Description
The port has link established.
There is no data activity.
The port has link established and
there is data activity.
The port is disabled by the
admin.
No link or fault.
Description
The port has link established.
There is no data activity.
The port has link established and
there is data activity.
The port is disabled by the
admin.
No link or fault.
State
Off
On
Blinking
All LEDs blinking (on 1
second, off 1 second)
Description
No link.
Link is active, but there
is no activity.
Link is active and there
is activity.
Switch is beaconing.
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