Bug ID 527011: Intermittent lost connections with no errors on external interfaces

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.6.0, 12.0.0, 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:
12.1.0, 12.0.0 HF1, 11.6.1, 11.5.4

Opened: Jun 08, 2015

Severity: 2-Critical


Intermittent lost connections to virtual servers or pool nodes with no observable errors on external interfaces. Errors are observed on internal interfaces using 'tmos show net interface -hidden'


Lost connections


Normal operation. This can occur on BIG-IP 8950, 11000, and 11050 platforms.



Fix Information

An issue with intermittent lost connections with no errors on the external interface has been corrected.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips