EW50 Industrial LTE Cellular Gateway
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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
scenarios. For example, if there are various departments within an 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 as needed. In some cases, the ISP may
need the router to support “VLAN tags” for certain kinds of services (e.g. IPTV). You can group all devices
requiring this service in one tag-based VLAN.
If the gateway has only one physical Ethernet LAN port, only very limited configuration is available if you
enable Port-based VLANs.
Port-based VLAN
Port-based VLANs can group Ethernet ports, Port-1 ~ Port-4, and Wi-Fi Virtual Access Points, VAP-1 ~ VAP-8,
together for differentiated services like Internet surfing, multimedia enjoyment, VoIP, 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 members obtain IP addresses. Thus, each host can access 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. The following is an example.
In a company, the administrator designs 3 network segments: Lobby/Meeting Room, Office, and Data Center.
In a Wireless Gateway, the 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. The office
segment is configured with VLAN ID 2. The VLAN group includes Port-2 and VAP-1 (SSID: Staff) with NAT mode
