Bug ID 446835: fastl4 tcp-handshanke-timeout

Last Modified: Apr 28, 2025

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

Known Affected Versions:
10.2.4, 11.0.0, 11.1.0, 11.2.0, 11.2.1

Fixed In:
11.6.0, 11.2.1 HF16

Opened: Jan 31, 2014

Severity: 4-Minor

Symptoms

fastl4 tcp-handshanke-timeout value does not change to become the idle timeout value after TCP 3 way handshake completes.

Impact

Instead of switching to the idle timeout value after the 3-way handshake completes, a connection can retain the tch-handshake-timeout value, which could cause it to timeout early.

Conditions

This issue is transient and occurs when using a fastl4 profile. After the system returns to the TCP_CLOSED state, it will be OK.

Workaround

None

Fix Information

Fixed an issue with fastl4 profile tcp-handshake-timeout setting.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips