Bug ID 669415: Flow eviction for hardware-accelerated flow might fail

Last Modified: Oct 01, 2018

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, 12.1.3.1, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0, 12.1.3.2

Opened: Jun 15, 2017
Severity: 3-Major

Symptoms

In rare cases, evicting a hardware-accelerated ePVA flow might fail. Under normal conditions, this flow eventually idles out of the ePVA, but if traffic happens to be generated over the flow, then it can stay in the ePVA indefinitely, even if there is no software connection context for this connection.

Impact

A connection becomes stuck in the ePVA. Traffic might be disrupted if tmm restarts.

Conditions

A virtual server using a FastL4 profile.

Workaround

Disable hardware acceleration.

Fix Information

This release has updated the process for evicting a connection from the ePVA.

Behavior Change