Radwin 5000 HPMP User Manual page 330

Port Functionality
To this end, VLAN functionality is supported at the MNG port of the HSU.
The HSU MNG port can be configured to handle Ethernet frames at the ingress direction
(where frames enter the HSU) and at the egress direction (where frames exit the HSU).
RADWIN 5000 HPMP User Manual Release 3.5.70 18‐4