ZyXEL Communications FMG3025-D10A ユーザーズマニュアル

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 Chapter 5 Broadband
FMG3024-D10A / FMG3025-D10A Series User’s Guide
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5.4  Technical Reference
The following section contains additional technical information about the Device features described 
in this chapter.
Encapsulation
Be sure to use the encapsulation method required by your ISP. The Device can work in bridge mode 
or routing mode. When the Device is in routing mode, it supports the following methods.
IP over Ethernet 
IP over Ethernet (IPoE) is an alternative to PPPoE. IP packets are being delivered across an 
Ethernet network, without using PPP encapsulation. They are routed between the Ethernet interface 
and the WAN interface and then formatted so that they can be understood in a bridged 
environment. For instance, it encapsulates routed Ethernet frames into bridged Ethernet cells. 
PPP over Ethernet (PPPoE)
Point-to-Point Protocol over Ethernet (PPPoE) provides access control and billing functionality in a 
manner similar to dial-up services using PPP. PPPoE is an IETF standard (RFC 2516) specifying how 
a personal computer (PC) interacts with a broadband modem (DSL, cable, wireless, etc.) 
connection. 
 Connection
Select Nailed-UP if you do not want the connection to time out.
Select On-Demand if  you do not want the connection up all the time and 
specify an idle time-out in the Max Idle Timeout field.
Max Idle Timeout 
This value specifies the time in minutes that elapses before the Device 
automatically disconnects from the ISP.
Obtain an IP 
Address 
Automatically
Select this option If your ISP did not assign you a fixed IP address. 
Use the following 
static IP address
Select this option If the ISP assigned a fixed IP address. 
IP Address
Enter your WAN IP address in this field if you selected Use the following 
static IP address
Obtain DNS info 
dynamically  
Select this to have the Device get the DNS server addresses from the ISP 
automatically. 
Use the following 
static DNS IP 
address
Select this to have the Device use the DNS server addresses you configure 
manually.
Primary DNS server Enter the first DNS server address assigned by the ISP.
Secondary DNS 
server
Enter the second DNS server address assigned by the ISP.
Apply
Click Apply to save your changes back to the Device.
Cancel
Click Cancel to return to the previous configuration.
Table 9   
Broadband > 3G Backup (continued)
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