Edimax Technology AR-7211B V2 manual on Demand, or Manual, Field, Description

Field	Description
Obtain an IP address	When this is selected, DHCP assigns IP address for
automatically	the PPPoE connection.
	When this is selected, you need to enter an IP
Use the following IP address	address for the PPPoE connection, which is
	provided by your ISP.
	Check this box to enable network address
	translation (NAT). If you do not select it and wish
Enable NAT	to access the Internet normally, you must add a
	route on the uplink equipment. Usually, it is
	required to enable NAT.

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Field		Description
PPP Username	Enter	the username	for	PPPoE	dial-up,	which	is
	provided by your ISP.
PPP Password	Enter	the password	for	PPPoE	dial-up,	which	is
	provided by your ISP.
	You can select Continuous (recommended), Connect
	on Demand, or Manual.
	 Continuous: After dial-up is successful, PPPoE
PPP Connection Type	connection is always on-line, whether the data is
	being transmitted or not.
	 Connect on Demand: After dial-up is successful, if
	no data is transmitted for the preset idle time, the
	router automatically disconnects the PPPoE
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