BugZero | F5 BugID 509246 - "Clock advanced by ticks" messages appear in /var/...

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

Last updated on July 18th, 2026

BugZero Risk Score
8.6 High

Overall: 8.6

Severity: 9.1

Community: 4.2

Lifecycle: 8.3

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Bug Details

Priority: 2-Critical
Status: Verified
Impact Category: TMOS
Views: 5

Description

Symptoms

a VCMP guest deployed on a B4300 host may display "clock advanced" error messages in /var/log/tmm. Excessive neighbour updates are observed with tmctl -d blade -i tmm/cmp

Impact

"clock advanced" error messages in /var/log/tmm

Conditions

VCMP guest deployed on a B4300 host. The B4300 host must be running 11.6.1 or earlier

Workaround

None

Fix Information

Correctly handle interface setup on B4300 with VCMP enabled

Change history

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F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

Last updated on July 18th, 2026

BugZero Risk Score
8.6 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

Last updated on July 18th, 2026

BugZero Risk Score
8.6 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

Last updated on July 18th, 2026

BugZero Risk Score8.6 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

F5 - Defect ID: 509246

"Clock advanced by ticks" messages appear in /var/log/tmm on idle VCMP guests

Last updated on July 18th, 2026

BugZero Risk Score8.6 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
8.6 High

BugZero Risk Score
8.6 High