Bug ID 1983021: No egress traffic from front-panel interface for port 1/2.1 in 4x100G mode on CX1610/BX520 blades

Last Modified: Nov 25, 2025

Affected Product(s):
F5OS Velos(all modules)

Known Affected Versions:
F5OS-C 1.8.1

Fixed In:
F5OS-C 1.8.2

Opened: Jul 14, 2025

Severity: 2-Critical

Symptoms

Symptom is no traffic from front-panel interface for port 1/2.1 in 4x100G mode.

Impact

Loss of traffic routed to front panel.

Conditions

CX1610/BX520 blade front panel ports have to be configured in 4x100G mode.

Workaround

This has been fixed with a TAM bitfile update in F5OS-C-1.8.1 EHF2 and newer. This issue is fixed in TAM FPGA bitfile version 73.80.18.66 and newer.

Fix Information

FPGA logic fix in TAM FPGA bitfile version 73.80.18.66 (or newer).

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips