Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP TMOS
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, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1
Fixed In:
13.1.0, 12.1.3.2
Opened: Mar 11, 2016 Severity: 3-Major Related Article:
K55703840
High speed logging (HSL): asymmetric bandwidth loss might result in no bandwidth tracking.
For a period of time after the logging node comes back up, HSL::send events will not be sent to the log server. Sometimes it never recovers and tmm needs to be restarted.
This will occur if the log server pool only has a single member in it, and that member goes down and up while HSL::send is occurring during traffic processing.
If possible, configure log server pools with multiple members to avoid this condition.
None