Bug ID 509497: VCMP guests on a specific host may be restarted when that host system experiences large date/time changes

Last Modified: Apr 28, 2025

Affected Product(s):
BIG-IP vCMP(all modules)

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, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6

Fixed In:
13.0.0

Opened: Feb 26, 2015

Severity: 3-Major

Symptoms

After a large (longer than 7 months) change in system date/time, either manually or via NTPD, vCMP guests may be terminated and restarted.

Impact

Temporary loss of service of data path elements, until terminated guests are restarted.

Conditions

-- vCMP is provisioned. -- There is a large change (longer than 7 months, for example), to the system date/time.

Workaround

Avoid large changes in system time during critical hours of operation. It may be better to bring down guests administratively, make the date/time change, and then bring the guests back up rather than allowing them to be terminated/restarted automatically due to heartbeat timer expiration.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips