Bug ID 475701: FastL4 with FIX late-bind enabled may not honor client-timeout

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.6.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.1

Opened: Aug 15, 2014

Severity: 3-Major

Symptoms

When insufficient initial data is received, the FastL4 fix late-bind timeout recovery action is not taken (no RST sent with disconnection and no default pool use with fallback).

Impact

The client-timeout feature does not work. Client connections seem to hang, and RST is not sent (when timeout-recovery disconnect) or the connection does not continue with standard FastL4 behavior (when timeout-recovery fallback) if enough initial data does not arrive within the client-timeout.

Conditions

FastL4 profile with FIX late-bind enabled and insufficient data is received.

Workaround

Setting tcp-handshake-timeout to a value that is greater than client-timeout might allow this to work.

Fix Information

FastL4 with FIX late-bind enabled now honors client-timeout.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips