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Step 3 – Add a New VLAN for the Public Subnet (Port)
The public VLAN will be configured in one of three different modes, (A) IP Routing with a
Static IP, (B) IP Routing using DHCP, or (C) PPPoE. DHCP is normally used when connected
to a cable modem and PPPoE is often used when connected to a DSL modem set in pass-through
or bridge mode. The following pages will show an example of each different scenario. We will
use VLAN 100 for the public VLAN and 100.100.100.2/30 as the public IP address when a
static IP address is used. When a static IP address is used, we need to make sure that a static
default route is entered on the “Route Table” page. Add a new VLAN by clicking the “VLAN”
link and then clicking the “Add a New VLAN” button.