Draytek Vigor2500V Manual page 40

Vigor2500V series
Chapter 4
LAN TCP/IP and DHCP
LAN IP Network Configuration
4.1
In the Vigor router, there are two sets of IP address settings for the LAN
interface, as shown below. The 1st IP address/subnet mask is for private
users or NAT users, and the 2nd IP address/subnet mask is for public users.
To allow public users, you need to have subscribed to a globally reachable
subnet from your ISP.
For example, for some DSL accounts, the ISP will assign a few public IP
addresses for your local network. You could use one IP address for your
router, and the 2nd IP address/subnet mask should be configured with the
public IP address. Other local PCs should set the router IP address as the
default gateway. When the DSL connection to the ISP has been established,
each local PC will directly route to the Internet. Also, you could use the 1st IP
address/subnet mask to connect to other private users (PCs). These IP
addresses of the users will be translated to the 2nd IP address by the router
and sent out via the DSL connection.
The following is the setting path for this function.
Internet Access Setup > LAN TCP/IP and DHCP
4-1