Bug ID 2137957: Observing FCS Errors on system controller Peer HG Links

Last Modified: Jul 15, 2026

Affected Product(s):
F5OS F5OS-C(all modules)

Known Affected Versions:
F5OS-C 1.8.1, F5OS-C 1.8.2

Fixed In:
F5OS v2.0.0

Opened: Oct 21, 2025

Severity: 3-Major

Symptoms

The symptom of this issue is FCS error counters incrementing on control plane system controller peer HG links.

Impact

Error counters increment, no system impact is observed aside from the counters incrementing.

Conditions

Run a system with 1.8.1+ that has the 6.5.26 version of the broadcom SDK.

Workaround

None

Fix Information

Had to modify SDK at init time to properly set advertisements to disable FEC on the peer links when running 6.5.26 SDK.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips