With WR PTP Core v4.0 we have the possibility to configure VLANs. You can assign one VLAN for the traffic going to LM32 CPU inside the WR PTP Core (PTP frames, SNMP, Syslog, etc.), and 3 VLANs for user-defined traffic (2 for class7, 1 for class6). This is useful if you want to prioritize user-defined traffic over the PTP/SNMP traffic on the WR Switch or if you want to have a common VLAN configured in the whole WR network for remote diagnostics.
Check WRPC manual for more information.