ZyXEL Communications P-2812HNU-51c 5.7 Technical Reference

	Chapter 5 WAN Setup
Table 30 3G Backup (continued)
LABEL	DESCRIPTION
Obtain an IP	Select this option If your ISP did not assign you a fixed IP address.
Address
Automatically
Use the following	Select this option If the ISP assigned a fixed IP address.
static IP address
IP Address	Enter your WAN IP address in this field if you selected Use the
	following static IP address.
Obtain DNS info	Select this to have the P-2812HNU-51c get the DNS server addresses
dynamically	from the ISP automatically.
Use the following	Select this to have the P-2812HNU-51c use the DNS server addresses
static DNS IP	you configure manually.
address
Primary DNS	Enter the first DNS server address assigned by the ISP.
server
Secondary	Enter the second DNS server address assigned by the ISP.
DNS server
Apply	Click Apply to save your changes back to the P-2812HNU-51c.
Cancel	Click Cancel to return to the previous configuration.

5.7 Technical Reference

The following section contains additional technical information about the P- 2812HNU-51c features described in this chapter.

Encapsulation

Be sure to use the encapsulation method required by your ISP. The P-2812HNU- 51c can work in bridge mode or routing mode. When the P-2812HNU-51c 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

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

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P-2812HNU-51c User’s Guide