Forum Discussion
Matt_Dierick
Dec 17, 2014Employee
Can you have a look in the log please ? LTM and APM ?
Please be aware there is a known issue on 11.5.1 HF6 for APM. See https://support.f5.com/kb/en-us/solutions/public/15000/800/sol15882.html
If you are planning to upgrade to BIG-IP APM 11.4.1 HF6 or 11.5.1 HF6 to mitigate this issue, please contact F5 Support for a special engineering hotfix for BIG-IP APM systems. For more information, refer to SOL15914: The tmm process may restart and produce a core file after BIG-IP APM systems are upgraded.