Bug ID 2197289: Enabling SSH access via the GUI blocks MCPD for 90 seconds

Last Modified: Jan 14, 2026

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

Known Affected Versions:
16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1, 17.1.2.2, 17.1.3, 17.5.1.3, 21.0.0

Opened: Dec 30, 2025

Severity: 3-Major

Symptoms

- Disconnections from the GUI occur (no responses to color advisory probe) - SNMP query timeouts - iQuery interruptions

Impact

-- MCPD is blocked for 90 seconds -- sshd service does not come up for the first 90 seconds after enabling SSH access

Conditions

-- SSH access is disabled via the GUI -- SSH access is then enabled via the GUI

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips