Bug ID 672815: Incorrect disaggregation on VIPRION B4200 blades

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP TMOS(all modules)

Known Affected Versions:
12.1.0, 12.1.1, 12.1.2, 12.1.3,

Fixed In:

Opened: Jul 06, 2017

Severity: 3-Major


During startup of the bcm56xxd daemon, the LTM log shows BCM SDK errors containing the string 'SDK error Invalid parameter'. IP fragments fail to be reassembled. The reassembly time out triggers and the flow is killed.


TCP connections and UDP datagrams which have fragmented packets are killed or dropped.


-- After startup as long as the SDK errors occur. -- Running on VIPRION B4200 blades.


There is no workaround that will process fragments correctly.

Fix Information

Incorrect disaggregation on VIPRION B4200 blades has been corrected.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips