PoE
AP
Router
49
Staff)
with
NAT
mode
and
DHCP
‐
2
server
equipped.
At
last,
administrator
also
configure
Data
Center
segment
with
VLAN
ID
1.
The
VLAN
group
includes
Port
‐
1
with
NAT
mode
to
WAN
interface
as
shown
in
following
diagram.
Above
is
the
general
case
for
3
Ethernet
LAN
ports
in
the
gateway.
But
if
the
device
just
has
one
Ethernet
LAN
port,
there
will
be
only
one
VLAN
group
for
the
device.
Under
such
situation,
it
still
supports
both
the
NAT
and
Bridge
mode
for
the
Port
‐
based
VLAN
configuration.
Tag
‐
based
VLAN
Tag
‐
based
VLAN
function
can
group
Ethernet
ports,
Port
‐
1
~
Port
‐
4,
and
WiFi
Virtual
Access
Points,
VAP
‐
1
~
VAP
‐
8,
together
with
different
VLAN
tags
for
deploying
subnets
in
Intranet.
All
packet
flows
can
carry
with
different
VLAN
tags
even
at
the
same
physical
Ethernet
port
for
Intranet.
These
flows
can
be
directed
to
different
destination
because
they
have
differentiated
tags.
The
approach
is
very
useful
to
group
some
hosts
at
different
geographic
location
to
be
in
the
same
workgroup.
Tag
‐
based
VLAN
is
also
called
a
VLAN
Trunk.
The
VLAN
Trunk
collects
all
packet
flows
with
different
VLAN
IDs
from
Router
device
and
delivers
them
in
the
Intranet.
VLAN
membership
in
a
tagged
VLAN
is
determined
by
VLAN
ID
information
within
the
packet
frames
that
are
received
on
a
port.
Administrator
can
further
use
a
VLAN
switch
to
separate
the
VLAN
trunk
to
different
groups
based
on
VLAN
ID.
Following
is
an
example.