Last Modified: Oct 17, 2023
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.4.1, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1
Fixed In:
13.0.0, 12.1.2, 11.6.1 HF1, 11.5.4 HF3
Opened: Jun 02, 2016 Severity: 3-Major Related Article:
K43159417
When using a fast L4 profile with ePVA full acceleration configured, the 5-second TCP 3WHS handshake timeout is not being updated to the TCP idle timeout after the handshake is completed. The symptom is an unusually high number of connections getting reset in a short period of time.
High number of connections get reset, longer than expected idling TCP connections, and potential performance issues.
It is not known all of the conditions that trigger this, but it is seen when using the fast L4 profile with pva-acceleration set to full.
Disabling the PVA resolves the issue.
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