Operation Manual

Chapter 7 LAN
SBG3300-N Series User’s Guide
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7.7 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 Device supports multiple logical LAN interfaces via its physical Ethernet
interface with the Device 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 Device may use an LAN IP address that can be
accessed from the WAN.
Click Network Setting > LAN > Additional Subnet to display the screen shown next.
Figure 58 Network Setting > LAN > Additional Subnet
The following table describes the labels in this screen.
Table 37 Network Setting > LAN > 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 12 on page 169 for how to create a new interface group. A newly created local
network (interface group) belongs to the LAN zone by default.
Active Select the check box to configure a LAN network for the Device.
IP Address Enter the IP address of your Device in dotted decimal notation.
IP Subnet Mask Your Device will automatically calculate the subnet mask based on the IP address that you
assign. Unless you are implementing subnetting, use the subnet mask computed by the
Device.
Public LAN
Active Select the checkbox to enable the Public LAN feature. Your ISP must support Public LAN and
Static IP.
IP Address Enter the public IP address provided by your ISP.
IP Subnet Mask Enter the public IP subnet mask provided by your ISP.