4G PoE IIoT Gateway
2.2.2 VLAN
VLAN (Virtual LAN) is a logical network under a certain switch or router device to group client hosts with a
specific VLAN ID. This gateway supports both Port-based VLAN and Tag-based VLAN. These functions allow
you to divide local network into different “virtual LANs”. It is common requirement for some application
scenario. For example, there are various departments within SMB. All client hosts in the same department
should own common access privilege and QoS property. You can assign departments either by port-based
VLAN or tag-based VLAN as a group, and then configure it by your plan. In some cases, ISP may need router to
support “VLAN tag” for certain kinds of services (e.g. IPTV). You can group all devices required this service as
one tag-based VLAN.
If the gateway has only one physical Ethernet LAN port, only very limited configuration is available if you
enable the Port-based VLAN.
Port-based VLAN
Port-based VLAN function can group Ethernet ports, Port-1 ~ Port-4, and WiFi Virtual Access Points, VAP-1 ~
VAP-8, together for differentiated services like Internet surfing, multimedia enjoyment, VoIP talking, and so on.
Two operation modes, NAT and Bridge, can be applied to each VLAN group. One DHCP server can be allocated
for a NAT VLAN group to let group host member get its IP address. Thus, each host can surf Internet via the
NAT mechanism of business access gateway. In bridge mode, Intranet packet flow is delivered out WAN trunk
port with VLAN tag to upper link for different services.
A port-based VLAN is a group of ports on an Ethernet or Virtual APs of Wired or Wireless Gateway that form a
logical LAN segment. Following is an example.
For example, in a company, administrator schemes out 3 network segments, Lobby/Meeting Room, Office,
and Data Center. In a Wireless Gateway, administrator can configure Lobby/Meeting Room segment with
VLAN ID 3. The VLAN group includes Port-3 and VAP-8 (SSID: Guest) with NAT mode and DHCP-3 server
equipped. He also configure Office segment with VLAN ID 2. The VLAN group includes Port-2 and VAP-1 (SSID:
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