ZyXEL Communications prestige 314 plus ユーザーズマニュアル

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Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch 
Remote Node Setup 
5-5 
Nailed-Up Connection 
A nailed-up connection is a dial-up line where the connection is always up regardless of traffic demand. The 
Prestige does two things when you specify a nailed-up connection. The first is that idle timeout is disabled. 
The second is that the Prestige will try to bring up the connection at power-on and whenever the connection 
is down. A nailed-up connection can be very expensive for obvious reasons.  
Do not specify a nailed-up connection unless your telephone company offers flat-
rate service or you need a constant connection and the cost is of no concern. 
5.1.3 PPPoE Encapsulation 
The Prestige supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF Draft standard (RFC 
2516) specifying how a personal computer (PC) interacts with a broadband modem (i.e. xDSL, cable, 
wireless, etc.) connection.  
 
For the service provider, PPPoE offers an access and authentication method that works with existing access 
control systems (e.g., Radius). For the user, PPPoE provides a login and authentication method that the 
existing Microsoft Dial-Up Networking software can activate, and therefore requires no new learning or 
procedures for Windows users. 
 
One of the benefits of PPPoE is the ability to let end users access one of multiple network services, a function 
known as dynamic service selection. This enables the service provider to easily create and offer new IP 
services for specific users. 
 
Operationally, PPPoE saves significant effort for both the end user and ISP/carrier, as it requires no specific 
configuration of the broadband modem at the customer site. 
 
By implementing PPPoE directly on the Prestige (rather than individual computers), the computers on the 
LAN do not need PPPoE software installed, since the Prestige does that part of the task. Furthermore, with 
NAT, all of the LANs’ computers will have access. 
Enable PPPoE in menu 11.1 by pressing the [SPACE BAR] to select PPPoE in the Encapsulation field.