Bug ID 874857: Hardware-accelerated connections might not be removed from ePVA on transition to standby

Last Modified: Jan 10, 2023

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, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,

Opened: Jan 30, 2020
Severity: 3-Major


This issue only affects certain platforms, such as the B4450. For affected platforms, when the active BIG-IP unit in a redundant configuration becomes the standby unit after a failover event, the traffic sent to the virtual servers with hardware acceleration enabled continues to be accelerated by the ePVA hardware on the original active unit (now the standby unit). These entries should be flushed on transition to standby if PVA standby flush is enabled.


Hardware-accelerated entries may stay active on the standby unit, processing network traffic.


When a failover event occurs on a device with hardware-accelerated virtual servers and PVA standby flush is enabled.


Disable hardware-accelerated (ePVA) connections.

Fix Information


Behavior Change