Bug ID 2122789: BIG-IP (i-series) goes offline after the upgrade - unable to access using SSH

Last Modified: Nov 25, 2025

Affected Product(s):
BIG-IP Install/Upgrade(all modules)

Known Affected Versions:
15.1.10.7, 15.1.10.8

Opened: Oct 08, 2025

Severity: 1-Blocking

Symptoms

After the upgrade to 15.1.10.8, the BIG-IP device is in an offline state. Users cannot access the device using SSH, but can use the web UI to access the device.

Impact

Users will be unable to access the BIG-IP (i-series) device using SSH, as it is currently in an offline state.

Conditions

Live upgrade to 15.1.10.8 version from the previous 15.1.x versions.

Workaround

Before a live upgrade, execute "tmsh save sys config" from a BIG-IP SSH terminal.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips