Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2
Fixed In:
13.0.0, 12.1.2, 11.5.9
Opened: Jun 28, 2016 Severity: 3-Major Related Article:
K89212666
Tmm cores. There might be messages similar to the following notice in /var/log/ltm just before the crash: notice BWC: instance already exist. This is an extremely rarely occurring issue.
Traffic disrupted while tmm restarts.
This extremely rare issue occurs when the following conditions are met: Dynamic BWC use with dynamic change in rate for each instance.
Do not use dynamic modification of rates for dynamic policies.
You can now successfully use dynamic modification of rates for dynamic policies.