VLANs 4004 and 4020 are reserved for internal switch communication and cannot be assigned to any interface in Full Switch or SmartFabric mode. VLAN 4020 is automatically created by the system as the Management VLAN. Do not remove this VLAN, and do not remove the VLAN tag or edit the Management VLAN on the Edit Uplink page if it is running in SmartFabric mode.
The VLAN and subnet that are assigned to OME-M cannot be used in the data path or fabric of the MX-IOMs. Ensure the management network used for OME-M does not conflict with networks configured on the fabric. All other VLANs are allowed on the data plane and can be assigned to any interface.