Last Modified: Jun 19, 2025
Affected Product(s):
F5OS Velos
Known Affected Versions:
F5OS-C 1.8.1
Opened: Feb 19, 2025 Severity: 3-Major
The BX520 Port LED may be solidly illuminated indicating link up while system software reports link down. This is typically a transient condition during initial port bringup. If it persists, it could be an indication of a problem with the fiber or at the link partner.
Differences in Link status as reported by HW LED and SW Status can cause confusion.
The BX520 Port LED is illuminated solid when the associated port has achieved RX alignment. The system software indicates port status UP when the BX520 port has achieved RX Alignment AND the link partner has also signaled it has achieved RX Alignment through the 802.3 Remote Fault Indicator protocol. It is expected that there may be transient cases of this during port bringup. If it persists, it can be an indication that the BX520 was able to achieve RX alignment but the link partner was not.
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