Planet EPL-2000 User Manual page 54

 Tagged:
Ports with tagging enabled will put the VID number, priority and other VLAN information into the
header of all packets that flow into those ports. If a packet has previously been tagged, the port
will not alter the packet, thus keeping the VLAN information intact. The VLAN information in the
tag can then be used by other 802.1Q compliant devices on the network to make
packet-forwarding decisions.
 Untagged:
Ports with untagging enabled will strip the 802.1Q tag from all packets that flow into those
ports. If the packet doesn't have an 802.1Q VLAN tag, the port will not alter the packet. Thus,
all packets received by and forwarded by an untagging port will have no 802.1Q VLAN
information. (Remember that the PVID is only used internally within the Switch). Untagging is
used to send packets from an 802.1Q-compliant network device to a non-compliant network
device.
Frame Income
Frame Leave
Leave port is tagged
Leave port is untagged
4.2.7.2 VLAN Configuration
To completely configure the VLAN functions on the GEOPN OLT, two of the following sub-menus are needed to be well
configured.

OLT Management \ VLAN Management

OLT Management \ Port \ Port Property

OLT Management \ VLAN Management
This page is used for configuring the OLT port VLAN. The VLAN Management page contains fields for managing ports that are
part of a VLAN.
Income Frame is tagged
Frame remains tagged
Tag is removed
Table 4-2-1 Ingress/Egress port with VLAN VID Tag/Untag table
Income Frame is untagged
Tag is inserted
Frame remain untagged
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User's Manual of EPL-2000