Bug ID 424831: State Mirroring does not work for an HA pair that uses only hardwired (serial) failover, without network failover

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP AFM, APM, ASM, AVR, CGN, LTM, PEM, PSM, WAM, WOM(all modules)

Known Affected Versions:
11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.6.0, 12.0.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0, 12.0.0 HF1, 11.6.1, 11.5.4, 11.4.1 HF10

Opened: Jul 09, 2013

Severity: 3-Major

Related Article: K14573

Symptoms

Failovers between devices in a HA pair might result in an unexpected disruption of traffic (for instance, if virtual servers are configured for mirroring). Persistence / session table information would similarly be missing on the newly-active system.

Impact

- Failovers may result in unexpected disruption of traffic that failed to be mirrored. - Session database (SessionDB things, iRule session table, persistence table, etc) will not be mirrored, as expected, which may result in unknown unexpected traffic failures.

Conditions

Platform that supports hardwired failover, configured for hardwired failover. (Note: this excludes chassis-based platforms, as well as VCMP guests and VEs) Network failover disabled.

Workaround

Enable network failover, then restart all TMMs. Note: workaround will temporarily disrupt traffic.

Fix Information

State Mirroring now works for HA configurations that use only hardwired (serial) failover, without network failover.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips