Bug ID 441413: Initial TCP window sizes for mirroring connection.

Last Modified: Jan 07, 2026

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

Fixed In:
11.5.1

Opened: Dec 20, 2013

Severity: 3-Major

Related Article: K16551

Symptoms

Initial TCP window sizes for mirroring impacts performance and mirroring.

Impact

Performance and mirroring impacts. Note: This does not affect client traffic.

Conditions

Using HA failover with mirroring.

Workaround

None

Fix Information

A change to initial tcp window sizes resulted in performance improvements and increased mirroring stability.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips