Last Modified: Jan 08, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
17.1.2.1, 17.1.2.2, 17.1.3
Opened: Dec 09, 2025 Severity: 3-Major
TMM gets the old link state from the driver level. It leads to 1 second delay for the link state change. The problem may also create link flapping messages in /var/log/ltm for the same interface in some conditions: Sep 17 15:02:22 notice mcpd[7553]: 01b5004a:5: Link: 1.8 is UP Sep 17 15:02:22 notice mcpd[7553]: 01b5004a:5: Link: 1.2 is UP Sep 17 15:02:22 notice mcpd[7553]: 01b5004a:5: Link: 1.8 is DOWN Sep 17 15:02:22 notice mcpd[7553]: 01b5004a:5: Link: 1.2 is DOWN Sep 17 15:02:22 notice mcpd[7553]: 01b5004a:5: Link: 1.8 is UP
Link state is updated with a delay.
- The interface link state is changed. - Multiple VFs of the same physical interface are attached to BIG-IP VE.
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