EW50 Industrial LTE Cellular Gateway
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and DHCP-2 server equipped. Finally, the administrator also configures the Data Center segment with VLAN ID
1. The VLAN group includes Port-1 with NAT mode to WAN interface as shown in following diagram.
The above diiagram shows a general case for a gateway with 3 Ethernet LAN ports. If the device has only one
Ethernet LAN port, there will be only one VLAN group for the device. Under such a situation, it still supports
both the NAT and Bridge mode for the Port-based VLAN configuration.
Tag-based VLAN
The tag-based VLAN function can group Ethernet ports, Port-1 ~ Port-4, and Wi-Fi Virtual Access
Points, VAP-1 ~ VAP-8, together with different VLAN tags for deployment in subnets. All packet
flows can carry different VLAN tags even at the same physical Ethernet port. These flows can be
directed to different destinations because they have differentiated tags. The approach is very
useful to group hosts at different geographic locations into the same workgroup.
Tag-based VLANs are also called VLAN Trunks. The VLAN Trunk collects all packet flows with
different VLAN IDs from the router 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. The administrator can further use a VLAN switch to separate the VLAN trunk to different
groups based on VLAN ID. The following is an example.
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General