Bug ID 431157: Monitor with alias port on virtual server with xlated IP address fails; virtual server marked down

Last Modified: May 29, 2024

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

Known Affected Versions:
11.2.1, 11.3.0, 11.4.0, 11.4.1

Fixed In:
11.5.0, 11.4.1 HF2, 11.4.0 HF4, 11.3.0 HF9, 11.2.1 HF10

Opened: Sep 19, 2013

Severity: 2-Critical

Related Article: K15205


When a Monitor has an alias port defined and is applied to a GTM Pool that has a GTM virtual server that has a translated address, the monitor will always fail and mark that pool member down.


The monitor fails, and the virtual server is marked down


This occurs on a GTM virtual server that has a translated address and a monitor with an explicit port (that differs from the virtual server's port).


If possible, deploy a monitor that does not have a port defined. Otherwise there is no workaround available.

Fix Information

GTM now correctly include all information necessary for the monitor to make the correct determination of status.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips