Bug ID 721585: mcpd core processing ltm monitors with deep level of inheritance

Last Modified: May 23, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 13.1.0,,,,,,,,, 13.1.1,,,,,, 14.1.0,

Fixed In:

Opened: May 23, 2018
Severity: 3-Major


If the level of ltm monitor inheritance (defaults-from) is too large, i.e 9. then mcpd will fail to send sod a heartbeat within the heartbeat timeout; therefore sod will restart mcpd.


mcpd is restarted which will cause services to failover.


LTM monitors that have 9 levels of inheritance i.e. mon1 defaults from mon2, which defaults from mon3, which defaults from mon4 ... to mon10


Rework the ltm monitors so that the level of inheritance is less than 9.

Fix Information


Behavior Change