Last Modified: Apr 27, 2026
Affected Product(s):
BIG-IP TMOS
Fixed In:
21.0.0.1
Opened: Dec 02, 2025 Severity: 2-Critical
Migration fails due to "Spanning Tree Protocol (STP) is not supported on this platform". STP is a configuration for physical interfaces; F5OS tenants use interfaces/vlans defined in the F5OS underlying operating system.
migration fails with: 010713d0:3: Symmetric Unit Key decrypt failure - decrypt failure Unexpected Error: Loading configuration process failed. /var/log/ltm shows: Dec 2 13:55:11 localhost.localdomain err mcpd[7147]: 010713d0:3: Symmetric Unit Key decrypt failure - decrypt failure ... Dec 2 13:55:14 localhost. localdomain err mcpd[7147]: 01070686:3: Spanning Tree Protocol (STP) is not supported on this platform. Dec 2 13:55:14 localhost.localdomain err tmsh[20673]: 01420006:3: Loading configuration process failed. Dec 2 13:55:14 localhost.localdomain emerg load_config_files[20656]: "/usr/bin/tmsh -n -g -a load sys config partitions all platform-migrate" - failed. -- Loading schema version: <BIG-IP-version>
migration to F5OS tenant from bare-metal BIG-IP with STP configured (e.g. from iSeries bare-metal to F5OS tenant).
Modify the "net stp-globals" object to not contain "mode" stp/mstp/rstp
STP configuration is removed during the migration to F5OS tenant.