ADC MM702G2, MM701G2 Configure DNS Relay Mode, LAN Protocol, IP Address, Subnet Mask, Dhcp Client

Chapter 3: Provisioning April 14, 2006

Step Action

2Configure the following parameters:

•LAN Protocol

The LAN protocol is set to Bridged and cannot be changed through the Web interface. If you want to change the protocol to Routing, use the command line interface (go to “Set Up the LAN” on page A-6).

•IP Address

See the LAN administrator for a LAN IP address. Do one of the following:

–Enter an IP address for the LAN (10/100Base-T) port provided by the LAN administrator

–Use the default IP address for the LAN port, which is 10.0.0.1. If you choose to use the default IP address, make sure the devices on your LAN are on the same subnet as this modem LAN port.

–If you want a DHCP server on your LAN to automatically provide the modem LAN port IP address, select Client for the DHCP configuration (see DHCP Client below).

•Subnet Mask

See the LAN administrator for the subnet mask. Do one of the following:

–Enter the subnet mask for the LAN (10/100Base-T) port provided by the LAN administrator.

–Use the default subnet mask for the LAN port, which is 255.255.255.0. If you choose to use the default subnet mask, make sure it allows devices on your LAN to access the modem LAN port.

–If you want a DHCP server on your LAN to automatically provide the subnet mask in addition to the IP address, select Client for the DHCP configuration (see DHCP Client below).

•DHCP Client

Note: If a DHCP server is not set up and active on your LAN, do not enable DHCP client. DHCP Client mode is recommended for use only when bridging is used as the LAN protocol.

A DHCP server must be set up and active on the LAN prior to enabling this feature. When DHCP Client is Enabled, the modem automatically changes the LAN port IP address to all zeroes so that the DHCP server on the LAN can immediately serve it an IP address. This parameter is used when the LAN port is in bridging mode only.

CONFIGURE DNS RELAY MODE

The DNS resolver on a DNS server maps human-readable addresses to IP address numbers. A human-readable address is one such as:

maggie.copro.company.com

As a DNS relay, the modem forwards requests for DNS resolution to another device on the LAN or WAN that performs the resolution service. When you enable DNS Relay mode, enter the IP address for the device that will perform DNS resolution. Either your service provider or LAN administrator will provide this IP address.

If the modem is configured as a DHCP client (see “Configure the LAN” on page 3-1), it is served a DNS address in addition to an IP address and subnet mask. The DNS relay will be automatically enabled and the DNS server IP address will be automatically displayed in the DNS server IP address field, as shown in Figure 3-3 on page 3-3.

If you do not enable DNS relay nor do you enable DHCP client, then you must add the IP address for a DNS resolver to the Internet Protocol (TCP/IP) setup for your PC (or other DHCP client). See Step 2 on page 3-5for more information on setting up this information.

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