Bug ID 644490: Finisar 100G LR4 values need to be revised in f5optics

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 13.0.0

Fixed In:
13.1.0, 13.0.0 HF1, 12.1.2 HF1

Opened: Feb 10, 2017
Severity: 3-Major


The original tuning values for the Finisar 100G LR4 optics don't support module tuning. You might see FCS errors.


Occasional packet loss at the 100G physical layer.


FCS errors can be observed with the shipping Finisar 100G LR4 tuning values.


Use 100G SR4 optics modules on the link if possible.

Fix Information

FCS errors no longer occur using the latest Finisar 100G LR4 tuning values. For information on installing and using the latest f5optics package (build 48.0 or later) that contains these tuning values, see F5 Platforms: Accessories (https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/f5-plat-accessories.html).

Behavior Change