Last Modified: Jul 15, 2026
Affected Product(s):
F5OS Velos
Known Affected Versions:
F5OS-A 1.5.3, F5OS-A 1.5.4, F5OS-A 1.8.0, F5OS-A 1.8.1, F5OS-A 1.8.2, F5OS-A 1.8.3, F5OS-A 1.8.4, F5OS-C 1.6.2, F5OS-C 1.6.4, F5OS-C 1.8.0, F5OS-C 1.8.1, F5OS-C 1.8.2
Fixed In:
F5OS v2.0.0
Opened: Apr 22, 2025 Severity: 4-Minor
Stpd and FPGA error logs are observed while doing MSTP configuration. In platform.log: stpd[1]: priority="Err" version=1.0 msgid=0x6102000000000018 msg="Failed to write to cdb" FIELD="MST Instance mst-id" ERRNO=8 ERRNOSTR="badly formatted or nonexistent path". stpd[1]: priority="Err" version=1.0 msgid=0x6102000000000018 msg="Failed to write to cdb" FIELD="MST Instance designated-root-address" ERRNO=8 ERRNOSTR="badly formatted or nonexistent path". stpd[1]: priority="Err" version=1.0 msgid=0x6102000000000018 msg="Failed to write to cdb" FIELD="WriteTenantOperMSTInstance failed" ERRNO=0 ERRNOSTR="Unknown error".
There is no impact on MSTP behavior and convergence.
1. Create VLANs. 2. Attach VLANs to the interfaces. 3. Enable MSTP using webUI. Select Network Settings > STP configuration and select MSTP. 4. Create an instance(1) and attach a VLAN to it (created VLANs). 5. Add the interfaces to instance 1. 6. Delete mstp instance. 7. You will observe errors under platform.log.
None
The fix added to change the deletion logic so that STP state is only reset on interfaces belonging to the MST instance.