Edit Lan Interface Window - Nortel Contivity 1100 Configuration Manual

• From the Select Protocol list, select the tunneling protocol to use: IP is the
standard Internet Protocol, and Point to Point Protocol over Ethernet (PPPoE)
allows PPP to run over Ethernet.
Note: You cannot use dynamic routing on PPPoE interfaces. DHCP is
configured by default on the Nortel VPN Router 1010, 1050, and 1100
so you must first select Cancel Acquisition and then select PPPoE from
the Select Protocol menu. You can use PPPoE on only one interface at a
time. IPX is not supported.
This window also provides the following information about the LAN interfaces:
• IP Address shows the current IP address that is assigned to the interface.
• Subnet Mask defines which bits of the IP address represent the network the
device is on and which bits represent the host's ID on the network. The device
uses the Subnet Mask to determine which IP addresses are directly reachable
on the network and which must be routed through a Nortel VPN Router. A
sample IP address is 10.2.3.3 with a subnet mask of 255.255.0.0. This
indicates that all hosts with addresses 10.2.n.n are directly reachable.
• Interface Filter shows whether the Nortel VPN Router Stateful Firewall is in
use on this LAN interface (this reflects the selection on the Services >
Firewall window). This entry also shows the interface filter that is currently
being used by the Nortel VPN Router Firewall. This is the interface filter that
is selected on the System > LAN Interfaces > Edit IP Address window. If no
interface filter has been selected, the default of Deny All is used. The Deny
All and the Deny All (default filter) have the same effect. The Deny All
(default filter means that there is no filter selected so the default behavior
applies, which is to deny all packets.
• Type shows whether the IP address is a Primary or Secondary address.
Note: The management window can take up to 3 minutes to return if
Ethernet parameters are changed when the link is not active on the
Ethernet port.

Edit LAN Interface window

The Configure button on the System > LAN window allows you to provide
optional information for the LAN interfaces.
Chapter 5 Configuring the system 95
Nortel VPN Router Configuration — Basic Features