Encapsulation; Enet Encap; Ppp Over Ethernet; Pppoa - ZyXEL Communications Prestige 650R-31/33 User Manual

Prestige 650R-31/33 ADSL Router
is not practical to have a separate VC for each carried protocol, for example, if charging heavily depends on
the number of simultaneous VCs.

3.11 Encapsulation

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

3.11.1 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 Ethernet
Encapsulation Gateway field in menu 4 and in the Rem IP Addr field in menu 11.1. You can get this
information from your ISP.

3.11.2 PPP over Ethernet

PPPoE provides access control and billing functionality in a manner similar to dial-up services using PPP.
The Prestige bridges a PPP session over Ethernet (PPP over Ethernet, RFC 2516) from your computer to an
ATM PVC (Permanent Virtual Circuit) which connects to a xDSL Access Concentrator where the PPP
session terminates. One PVC can support any number of PPP sessions from your LAN. For more
information on PPPoE, see the Appendices.

3.11.3 PPPoA

Please refer to RFC 2364 for more information on PPP over ATM Adaptation Layer 5 (AAL5). Refer to
RFC 1661 for more information on PPP.

3.11.4 RFC 1483

RFC 1483 describes two methods for Multiprotocol Encapsulation over ATM Adaptation Layer 5 (AAL5).
The first method allows multiplexing of multiple protocols over a single ATM virtual circuit (LLC-based
multiplexing) and the second method assumes that each protocol is carried over a separate ATM virtual
circuit (VC-based multiplexing). Please refer to the RFC for more detailed information.

3.12 IP Address Assignment

A static IP is a fixed IP that your ISP gives you. A dynamic IP is not fixed; the ISP assigns you a different
one each time. The Single User Account feature can be enabled or disabled if you have either a dynamic or
Internet Access 3-11