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

Last Modified: Oct 19, 2025

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

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 bugfix. The 'enable' bit of ports 1.x were also connected to ports 2.x. We also discovered a problem with port filtering that can cause wrong routing. Both problems are fixed in TAM FPGA bitfile version 73.80.18.66 (or newer).

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips