Chapter 8 Home Networking
VMG3312-T20A User’s Guide
133
8.5 The Additional Subnet Screen
Use the Additional Subnet screen to configure IP alias and public static IP.
IP alias allows you to partition a physical network into different logical networks over the same Ethernet
interface. The VMG supports multiple logical LAN interfaces via its physical Ethernet interface with the
VMG itself as the gateway for the LAN network. When you use IP alias, you can also configure firewall
rules to control access to the LAN's logical network (subnet).
If your ISP provides the Public LAN service, the VMG may use an LAN IP address that can be accessed
from the WAN.
Click Network Setting > Home Networking > Additional Subnet to display the screen shown next.
Figure 57 Network Setting > Home Networking > Additional Subnet
The following table describes the labels in this screen.
Table 34 Network Setting > Home Networking > Additional Subnet
LABEL DESCRIPTION
IP Alias Setup
Group Name Select the interface group name for which you want to configure the IP alias settings. See
Chapter 13 on page 183 for how to create a new interface group.
Active Select Enable to configure a LAN network for the VMG.
IPv4 Address Enter the IP address of your VMG in dotted decimal notation.
Subnet Mask Enter the subnet mask of your network in dotted decimal notation, for example 255.255.255.0
(factory default).
Public LAN
Active Select Enable to turn on the Public LAN feature. Your ISP must support Public LAN and Static IP.
IPv4 Address Enter the public IP address provided by your ISP.
Subnet Mask Enter the public IP subnet mask provided by your ISP.
Offer Public IP
by DHCP
Select Enable to allow the VMG to provide public IP addresses by DHCP server.
Enable ARP
Proxy
Select Enable to activate the ARP (Address Resolution Protocol) proxy.
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