Bug ID 754938: Packet data may fail CRC checks due to hardware (HSB) issue

Last Modified: Feb 06, 2019

Bug Tracker

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

Opened: Jan 08, 2019
Severity: 3-Major


Issues in the HSB may cause packet data to fail CRC (TCP checksums). This can be confirmed by observing the CRC error rate reported by the HSB, along with confirming that the packet data was correct when it arrived at the BIG-IP by using a tcpdump capture. This issue persists until the HSB is rebooted, which appears to clear the condition.


Incoming packets are dropped.


Network traffic is received by BIG-IP. It's unknown what causes the issue in the HSB.


Reboot to clear the state of the HSB or an RMA.

Fix Information


Behavior Change