Bug ID 786517: Modifying a monitor Alias Address from the TMUI might cause failed config loads and send monitors to an incorrect address

Last Modified: Jul 12, 2023

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

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3, 15.0.0, 15.0.1,,,,, 15.1.0,,,,

Fixed In:

Opened: May 24, 2019

Severity: 3-Major


- Monitors are firing and are being sent to a pool-member or node address rather than a monitor's alias address. - Running the command 'tmsh load /sys config' reports an error: 01070038:3: Monitor /Common/a-tcp address type requires a port.


Monitors are sent to an incorrect IP address. tmsh load /sys config will fail to load the configuration.


-- Create a monitor without an alias address. -- Modify the monitor later in the TMUI to specify an alias address.


There are two workarounds: -- Delete and recreate the monitor and specify the correct alias address at creation time. -- Fix the monitor definition using tmsh.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips