D-Link DSL-2750U User Manual page 25

PPP Username: The correct user name that your ISP provides you.
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PPP Password: The correct password that your ISP provides you.
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Authentication Method: The value can be AUTO, PAP, CHAP, or MSCHAP.
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Usually, AUTO will be selected.
Dial on demand (with idle timeout timer): If this function is enabled, you
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need to enter the idle timeout time. Within the preset time, if the modem does
not detect data flow , the modem automatically stops the PPPoE connection.
Once it detects data flow (like access to a webpage), the modem restarts the
PPPoE dialup.
If this function is disabled, the modem performs PPPoE dial-up all the time.
The PPPoE connnection does not stop, unless the modem is powered off or
the DSLAM or uplink equipment is faulty.
MTU Size: Maximum Transmission Unit.This function sometimes must be
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modified to access the network successfully.
PPP IP extension: If this function is enabled, the WAN IP address obtained
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by the modem through the built-in dial-up can be directly assigned to the PC
being attached to the modem (at this time, the modem connects to only one
PC). From the aspect of the PC user, the PC dials up to obtain an IP address.
But actually, the dial-up is done by the modem.
If this function is disabled, the modem itself obtains the WAN IP address.
Use Static IP Address: If this function is disabled, the modem obtains an IP
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address assigned by uplink equipment such as BAS, through PPPoE dial-up.
If this function is enabled, the modem uses this IP address as the WAN IP
address.
Enable NAT: Select it to enable the NAT functions of the modem. If you do
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not want to enable NAT and wish the modem user to access the Internet
normally, you must add a route on the uplink equipment. Otherwise, the
access to the Internet fails. Normally, NAT is enabled.
Enable Firewall: Enable or disable IP filtering.
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Enable IGMP Multicast: IGMP proxy. For example, if you would like PPPoE
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mode to support IPTV, enable this function.
If you select the MAC Encapsulation Routing (MER) as the connection protocol,
the following page appears.
DSL-2750U User Manual
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