Luxul XMS-1024P - Manual (Page 67)

67
User Guide
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In this User Guide “tagged packet” refers to a packet with a VLAN tag, “untagged
packet” refers to a packet without VLAN tag and “priority-tagged” packet refers to a
packet with VLAN tag whose VLAN ID is 0.
Link Types of Ports
When creating the 802.1Q VLAN, you should set the link type for the Port according to
the configuration of the connected device. The link type of a Port includes the follow-
ing three types:
„
ACCESS: The ACCESS Port can be added to a single VLAN the Egress Rule of the Port
is UNTAG. The PVID will be the same as the current VLAN ID. If the ACCESS Port is
added to another VLAN, it will be removed from its current VLAN automatically.
„
TRUNK: The TRUNK Port can be added to multiple VLANs the Egress Rule of the Port
is TAG. The TRUNK Port type is generally used to connect other Network devices
(i.e. Switches, routers, access points) it receives and forwards packets from multiple
VLANs. Packets forwarded by a TRUNK Port will not have any changes made to the
existing VLAN tag. The PVID can be set to the VID number of any VLAN the Port
belongs to.
„
GENERAL: The GENERAL Port can be added to multiple VLANs and can have various
Egress Rules in different VLANs. The default Egress Rule is UNTAG. The PVID can be
set to the VID number of any VLAN the Port belongs to.
PVID
PVID (Port VLAN ID) is the default VID of the Port. When the Switch receives an
untagged packet, it will add a VLAN tag to the packet according to the PVID of the
Ingress Port.
When creating VLANs the PVID of each Port indicates the default VLAN to which the
Port belongs, and is an important parameter with the following two purposes:
„
When the Switch receives an untagged packet, it will add a VLAN tag to the packet of
the PVID of its Ingress Port
„
PVID determines the default broadcast domain of the Port, when the Port receives
broadcast packets, the Port will broadcast the packets to all members of the
same PVID.
Tagged and untagged will be processed in different ways after being received by Ports
of different link types, as illustrated in the following table.