Last Modified: Jul 11, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
17.1.2, 17.1.2.1, 17.1.2.2, 17.5.0, 17.5.1
Opened: Jun 26, 2025 Severity: 3-Major
Attempting to adjust the MTUs (or any other attribute) of VLANs in a virtual-wire on an F5OS tenant fails with an error message: VLAN /Common/vlan has an id of X, and customer-tag of none, so it cannot be used by VLAN /Common/vlan With both VLAN objects mentioned being the same VLAN.
Unable to operationally manage device and add descriptions or adjust MTUs in virtual-wire configurations on the tenant due to MCPD validation.
Virtual-wire configuration on F5OS tenant.
Save the configuration, edit bigip_base.conf and add a "mtu <value>" in each of the VLANs, and then load the configuration.
None