Modem - Connection to Router

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For your LAN you will probably want a DHCP server and this is where your main Access Point Router comes into play. This is the host unit that supplies LAN addresses to the rest of your network and should be the only DHCP server on your base IP subnet. Remember there should only be one DHCP server per subnet. For your LAN you will probably want a DHCP server and this is where your main Access Point Router comes into play. This is the host unit that supplies LAN addresses to the rest of your network and should be the only DHCP server on your base IP subnet. Remember there should only be one DHCP server per subnet.
- +If your modem has a router built in, you would want to shut down the DHCP server on either the modem, or on your host router.
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-To connect your router to a modem, it is important to note that a modem is designed to provide dhcp addresses to devices that connect to it. It is a 'dhcp server'. A dd-wrt router in default configuration is also a 'dhcp server' However, a LAN network can only have ONE dhcp server. You need to shut off one of these DHCP servers, or create a subnetwork to separate the dhcp servers.+
To shut of the dhcp server in the modem, you need to set the modem into a 'bridge mode'. This would be done following the instructions from your ISP, as each modem would be different. To shut of the dhcp server in the modem, you need to set the modem into a 'bridge mode'. This would be done following the instructions from your ISP, as each modem would be different.

Revision as of 17:08, 11 February 2010

To connect your router to a modem, it is important to note that a modem is designed to provide you with a connection to the WAN. The modem is generally the link between your LAN and the ISP.

The ISP could assign you a Static WAN IP or a Dynamic (DHCP) WAN IP address and configuring of your main router is dependent on the type of IP your ISP provides.

For your LAN you will probably want a DHCP server and this is where your main Access Point Router comes into play. This is the host unit that supplies LAN addresses to the rest of your network and should be the only DHCP server on your base IP subnet. Remember there should only be one DHCP server per subnet.

If your modem has a router built in, you would want to shut down the DHCP server on either the modem, or on your host router.

To shut of the dhcp server in the modem, you need to set the modem into a 'bridge mode'. This would be done following the instructions from your ISP, as each modem would be different.

To shut off the dhcp server in your dd-wrt, disable dhcp server in the basic settings page.

DSL Modems

DSL Modem connection info needed.

Cable Modems

Cable Modem info needed