Manufacture Technology GEFXL2-CSW28KX User Manual page 230

with below items:
ethernet PTP over Ethernet multicast
ip4multi PTP over IPv4 multicast
ip4uni PTP over IPv4 unicast
VLAN Tag Enable:

Enables the VLAN tagging for the PTP frames.
VID:

VLAN Identifier used for tagging the PTP frames.
PCP:

Priority Code Point value used for PTP frames.
Buttons:

Add new PTP Clock - Click to add a new clock instance.
Save – Click to save changes.
Reset- Click to undo any changes made locally and revert to previously saved
values.
.
IPv4 unicast protocol only works in Master only and
N :
OTE
Slave only clocks See parameter Device Type. In a unicast
Slave only clock you also need configure which master clocks
to request Announce and Sync messages from. See: Unicast
Slave Configuration.
Packets are only tagged if the port is configured for
N :
OTE
vlan tagging. i.e.: Port Type! = Unaware and PortVLAN
mode== None.
220 Publication date: March, 2012
Revision A1