Configuration - Page 33
Logical LAN Menu
The Logical LAN feature allows a secondary LAN or logical Ethernet interface to be
created. Hence, single LAN systems, such as the IP403 or IP406, can be used as dual
LAN systems. Using this arrangement the Logical LAN provides the public interface
and the physical LAN1 provides the internal LAN functions.
Because a logical LAN interface is NAT enabled, any number of PCs on the system
LAN interface (LAN1) can access the Internet. The Logical LAN interface may be used
with any xDSL or a third party Internet LAN attached router. The MAC address of the
next hop router must be known to complete the configuration of the Logical LAN
interface.
Figure 16. The Logical LAN Menu
Parameter Options
Description
Name
A unique name for the logical interface. Once the
logical interface is created, the name can be
selected as a destination in the IP Route table.
IP Address/IP Mask
IP address/IP Mask of the logical interface.
Gateway IP Address
The IP Address of the next hop router
(see Guidelines below).
Gateway MAC
Address
The Ethernet MAC address of the next hop router
(see Guidelines below).
Firewall
A Firewall Profile that is associated to this interface.
Enable NAT
Default = On
NAT functionality allows any number of PC on LAN1
(the Internal LAN1) to access the Internet via the
Logical LAN. NAT is enabled by default and cannot
be disabled for this interface type.
Guidelines
1. With the IP Office VPN implementation, the Logical LAN parameter Gateway MAC
Address must be used to specify and configure the router that is the next hop. The
Gateway IP Address field can be used for information purposes or can be left un-
configured. It is not used to resolve the next hop router MAC address.
2. When adding an IP route entry, which uses a Logical LAN interface destination, the
Gateway field should be left un-configured. It must not be set to the next hop router
address. This is because the next hop router MAC address must be specified on
the Logical LAN Gateway MAC address parameter (see previous Guideline).
IP Office (R3.0) Virtual Private Networking
Configuration - Page 33
40DHB0002UKER Issue 3 (4th February 2005)
L2TP Configuration
