Forum Discussion
SFP Port LEDs Blinking Yellow
- Oct 24, 2025
Thanks Enes. I appreciated the response.
Hi SRM,
It is normal for the yellow light to be on at the 25/10G ports for r5k/10k series devices.
|
State |
Module |
Description |
|---|---|---|
|
off (not lit) |
QSFP+ or QSFP28 |
No link. |
|
blue solid |
QSFP28 |
Linked at 100GbE (with all four LEDs operating in unison). |
|
blue blinking |
QSFP28 |
Link is actively transmitting or receiving data at 100GbE (with all four LEDs operating in unison). |
|
green solid |
QSFP+ |
Linked at 40GbE when operating as a single 40GbE port (with all four LEDs operating in unison). |
|
green blinking |
QSFP+ |
Link is actively transmitting or receiving data at 40GbE (with all four LEDs operating in unison). |
|
amber/yellow solid |
QSFP28 |
Linked at 25GbE when operating as a single 4x 25GbE ports. |
|
amber/yellow solid |
QSFP+ |
Linked at 10GbE when operating as a single 4x 10GbE ports. |
|
amber/yellow blinking |
QSFP28 |
Link is actively transmitting or receiving data at 25GbE. |
|
amber/yellow blinking |
QSFP+ |
Link is actively transmitting or receiving data at 10GbE. |
REF: https://techdocs.f5.com/en-us/hardware/platform-guide-r5000r10000-series/title--platform-overview.html
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