PoE
AP
Router
50
For
example,
in
a
company,
administrator
schemes
out
3
network
segments,
Lab,
Meeting
Rooms,
and
Office.
In
a
Security
VPN
Gateway,
administrator
can
configure
Office
segment
with
VLAN
ID
12.
The
VLAN
group
is
equipped
with
DHCP
‐
3
server
to
construct
a
192.168.12.x
subnet.
He
also
configure
Meeting
Rooms
segment
with
VLAN
ID
11.
The
VLAN
group
is
equipped
with
DHCP
‐
2
server
to
construct
a
192.168.11.x
subnet
for
Intranet
only.
That
is,
any
client
host
in
VLAN
11
group
can’t
access
the
Internet.
At
last,
he
configures
Lab
segment
with
VLAN
ID
10.
The
VLAN
group
is
equipped
with
DHCP
‐
1
server
to
construct
a
192.168.10.x
subnet.
