Chapter 4
Advanced Configuration
IP Settings
Select Obtain an IP Address Automatically if your ISP says you are connecting through a dynamic IP address.
If you are required to use a permanent (static) IP address to connect to the Internet, then select Use the following IP Address. Your ISP provides the settings needed for the following fields:
Internet IP Address Enter the Gateway’s IP address, as seen from the Internet.
Subnet Mask Enter the Gateway’s Subnet Mask, as seen from the Internet (including your ISP).
Default Gateway Enter the IP address of the ISP server.
Primary (Required) and Secondary (Optional) DNS Enter the DNS (Domain Name System) server IP address(es) provided by your ISP. At least one is required.
Bridge Mode Only
If you are using your Gateway as a bridge, which makes the Gateway act like a
Internet Connection Type > Bridged Mode Only
Optional Settings
Some of these settings may be required by your ISP. Verify with your ISP before making any changes.
Optional Settings
Host Name and Domain Name These fields allow you to supply a host and domain name for the Gateway. Some ISPs, usually cable ISPs, require these names as identification. You may have to check with your ISP to see if your broadband Internet service has been configured with a host and domain name. In most cases, leaving these fields blank will work.
MTU MTU is the Maximum Transmission Unit. It specifies the largest packet size permitted for Internet transmission.
Select Manual if you want to manually enter the largest packet size that is transmitted. To have the Gateway select the best MTU for your Internet connection, keep the default, Auto.
Size When Manual is selected in the MTU field, this option is enabled. Leave this value in the 1200 to 1500 range. The default, MTU is configured automatically.
Network Setup
The Network Setup section changes the settings on the network connected to the Gateway’s Ethernet ports. Wireless setup is performed through the Wireless tab.
Router IP
The values for the Gateway’s Local IP Address and Subnet Mask are shown here. In most cases, keeping the default values will work.
Router IP
Local IP Address The default value is 192.168.1.1. Subnet Mask The default value is 255.255.255.0.
Network Address Server Settings (DHCP)
The settings allow you to configure the Gateway’s Dynamic Host Configuration Protocol (DHCP) server function. The Gateway can be used as a DHCP server for your network. A DHCP server automatically assigns an IP address to each computer on your network. If you choose to enable the Gateway’s DHCP server option, make sure there is no other DHCP server on your network.
Network Address Server Settings (DHCP)
DHCP Server A Dynamic Host Configuration Protocol (DHCP) server automatically assigns an IP address to each computer on your network for you. Unless you already have one, Linksys recommends that you keep the default, Enable. You can also use the Gateway in DHCP Relay mode. (This setting is not available for all encapsulation types.)
DHCP Relay To use the Gateway in DHCP Relay mode instead of using it as a DHCP server, select this option.
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