The following table list the two LEDs present for each QSFP port. The LEDs are visible through the I/O bracket as shown in Figure 1. In addition, it provides recommended operation along with the source control logic.
Green when physical link is present and operating at the highest supported link rate.
Yellow when operating at lower rates.
Off in the absence of physical link.
LED illuminated or blinking green to show link activity.
Off when there is no activity.