Wan Technical Reference; Encapsulation; Enet Encap; Ppp Over Ethernet - ZyXEL Communications P-660HW-Tx v3 Series User Manual

Table 23 Network > WAN > More Connections: Edit: Advanced Setup (continued)
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6.4 WAN Technical Reference

This section provides some technical background information about the topics
covered in this chapter.

6.4.1 Encapsulation

Be sure to use the encapsulation method required by your ISP. The ZyXEL Device
supports the following methods.

6.4.1.1 ENET ENCAP

The MAC Encapsulated Routing Link Protocol (ENET ENCAP) is only implemented
with the IP network protocol. IP packets 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 ATM cells. ENET ENCAP requires that you specify a gateway IP address in
the Gateway IP Address field in the wizard or WAN screen. You can get this
information from your ISP.

6.4.1.2 PPP over Ethernet

The ZyXEL Device 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 (DSL, cable, wireless, etc.) connection. The
PPPoE option is for a dial-up connection using PPPoE.
For the service provider, PPPoE offers an access and authentication method that
works with existing access control systems (for example RADIUS).
One of the benefits of PPPoE is the ability to let you 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 individuals.
Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as
it requires no specific configuration of the broadband modem at the customer site.
By implementing PPPoE directly on the ZyXEL Device (rather than individual
computers), the computers on the LAN do not need PPPoE software installed,
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Chapter 6 WAN Setup
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