Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.2.1, 11.3.0, 11.4.0, 11.4.1
Fixed In:
11.5.0
Opened: Jul 25, 2013 Severity: 3-Major
The maximum number of entries in the session cache as well as the per-profile limit is 256 KB. The per-profile limit is distributed across all TMMs, so if the limit set is 32 KB, and there are four TMMs, each will only be able to hold 8 KB entries.
In some configurations, the existing SSL session cache may time out entries far too quickly.
SSL session.
None
The maximum number of entries in the session cache is now configurable via the BigDB variable tmm.ssl.cachesize. Note that after changing this variable the TMMs must be restarted for the new value to take effect. The per-profile limit is now per TMM so if the limit is set to 32 KB entries, each TMM will be allowed to have 32 KB entries.
Formerly, the per-profile limit was over the entire BigIP. Now, the per-profile limit is per TMM so if the limit is set to 32K entries, each TMM will be allowed to have 32K entries.