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Network Connections Section

FIGURE 1.

Network Connections Panel

LAN BRIDGE

The LAN bridge connection is used to combine several LAN devices under

one virtual network. For example, creating one network for LAN Ethernet and

LAN wireless devices.

Please note, that when a bridge is removed, its formerly underlying devices

inherit the bridge's DHCP settings. For example, the removal of a bridge that is

configured as DHCP client, automatically configures the LAN devices formerly

constituting the bridge as DHCP clients, with the exact DHCP client configura-

tion.

LAN BRIDGE >> GENERAL

To view and edit the LAN bridge connection settings, click the 'LAN Bridge' link

in the 'Network Connections' screen. The 'LAN Bridge Properties' screen will

appear, displaying a detailed summary of the connection's parameters, under

the 'General' tab. These parameters can be edited in the rest of the screen's

tabs, as described in the following sections.

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OGU 930500105-A1

Network Connections Section

FIGURE 2.

LAN Bridge >> General Panel

LAN BRIDGE >> SETTINGS

General.

This section displays the connection's general parameters. It is recom-

mended not to change the default values unless familiar with the networking

concepts they represent. Since your gateway is configured to operate with the

default values, no parameter modification is necessary.

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Network Connections Section

FIGURE 3.

LAN Bridge >> Settings Panel

Schedule.

By default, the connection will always be active. However, you can

configure scheduler rules in order to define time segments during which the

connection may be active. Once a scheduler rule(s) is defined, this field

changes to a combo-box, allowing you to choose between the available rules.

Network.

Select whether the parameters you are configuring relate to a WAN,

LAN or DMZ connection, by selecting the connection type from the combo-box.

Physical Address.

The physical address of the network card used for your net-

work. Some cards allow you to change this address.

MTU.

MTU is the Maximum Transmission Unit. It specifies the largest packet

size permitted for Internet transmission. In the default setting, Automatic, the

gateway selects the best MTU for your Internet connection. Select "Automatic

by DHCP" to have the DHCP determine the MTU. In case you select "Manual", it

is recommended to enter a value in the 1200 to 1500 range.

Internet Protocol.

Select one of the following Internet protocol options from the

'Internet Protocol' combo-box:

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Network Connections Section

-

No IP Address

: Select 'No IP Address' if you require that your gateway have no

IP address. This can be useful if you are working in an environment where you

are not connected to other networks, such as the Internet.

-

Obtain an IP Address Automatically

: Your connection is configured by default

to act as a DHCP client. You should keep this configuration in case your service

provider supports DHCP, or if you are connecting using a dynamic IP address.

The server that assigns the gateway with an IP address, also assigns a subnet

mask. You can override the dynamically assigned subnet mask by selecting the

'Override Subnet Mask' and specifying your own mask instead. You can press

the 'Release' button to release the current leased IP address. Once the address

has been released, the button text changes to 'Renew'. Use the 'Renew' button

to renew the leased IP address.

-

Use the Following IP Address

: Your connection can be configured using a per-

manent (static) IP address. Your service provider should provide you with such

an IP address and subnet mask.

DNS Server.

Domain Name System (DNS) Server is the method by which Web

site domain names are translated into IP addresses. You can configure the con-

nection to automatically obtain a DNS server address, or specify such an

address manually, according to the information provided by your ISP.

To configure the connection to automatically obtain a DNS server address,

select 'Obtain DNS Server Address Automatically' from the 'DNS Server' drop

down menu.

To manually configure DNS server addresses, select 'Use the Following DNS

Server Addresses' from the 'DNS Server' drop down menu. Specify up to two

different DNS server address, one primary, another secondary.

IP Address Distribution.

The 'IP Address Distribution' section allows you to con-

figure the gateway's Dynamic Host Configuration Protocol (DHCP) server

parameters. The DHCP automatically assigns IP addresses to network PCs. If

you enable this feature, make sure that you also configure your network PCs as

DHCP clients. Select one of the following options from the 'IP Address Distribu-

tion' combo-box:

DHCP Server.

Start IP Address

: The first IP address that may be assigned to a LAN host.

Since the gateway's default IP address is 192.168.1.1, this address must be

192.168.1.2 or greater.

End IP Address

: The last IP address in the range that can be used to automati-

cally assign IP addresses to LAN hosts.

Subnet Mask

: A mask used to determine to what subnet an IP address belongs.

An example of a subnet mask value is 255.255.0.0.

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Network Connections Section

Lease Time In Minutes

: Each device will be assigned an IP address by the

DHCP server for this amount of time, when it connects to the network. When the

lease expires the server will determine if the computer has disconnected from

the network. If it has, the server may reassign this IP address to a newly-con-

nected computer. This feature ensures that IP addresses that are not in use will

become available for other computers on the network.

Provide Host Name

if Not Specified by Client

: If the DHCP client does not have

a host name, the gateway will automatically assign one for him.

DHCP Relay.

Your gateway can act as a DHCP relay in case you would like to

dynamically assign IP addresses from a DHCP server other than your gateway's

DHCP server. Note that when selecting this option you must also change

Router's WAN to work in routing mode.

1.

After selecting 'DHCP Relay' from the drop down menu, a 'New IP Address' link

will appear: Click the 'New IP Address' link. The 'DHCP Relay Server Address'

screen will appear.

2.

Specify the IP address of the DHCP server.

3.

Click 'OK' to save the settings.

Disabled.

Select 'Disabled' from the combo-box if you would like to statically

assign IP addresses to your network computers.

LAN BRIDGE >> ROUTING

You can choose to setup your gateway to use static or dynamic routing.

Dynamic routing automatically adjusts how packets travel on the network,

whereas static routing specifies a fixed routing path to neighboring destinations.

FIGURE 4.

LAN Bridge >> Routing Panel