Encapsulation; Enet Encap; Ppp Over Ethernet; Ppp - ZyXEL Communications Prestige 641 User Manual

is not practical to have a separate VC for each carried protocol, e.g, if charging heavily depends on the
number of simultaneous VCs.
3.8

Encapsulation

Be sure to use the encapsulation method required by your ISP. The Prestige supports the following
methods.
3.8.1

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 i.e., it encapsulates routed Ethernet frames into
bridged ATM cells. ENET ENCAP requires that you specify a gatway 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. Please see RFC 1483MER for more details.
3.8.2

PPP over Ethernet

The Prestige bridges a PPP session over Ethernet (PPP over Ethernet, RFC 2516) from your PC 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. PPPoE provides access
control and billing functionality in a manner similar to dial-up services using PPP.
For more information on PPPoE, see PPP over Ethernet in Appendix A.
3.8.3

PPP

Please refer to RFC 2364 for more information on PPP over ATM Adaption Layer 5 (AAL5). Refer to RFC
1661 for more information on PPP.
3.8.4

RFC 1483

RFC 1483 describes two methods for Multiprotocol Encapsulation over ATM Adaption 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.
3.9

Internet Access Configuration

Menu 4 allows you to enter the Internet Access information in one screen. Menu 4 is actually a simplified
setup for one of the remote nodes that you can access in Menu 11. Before you configure your Prestige for
Internet access, you need to collect your Internet account information from your ISP and telephone
company.
Use the following table to record your Internet Account Information.
Internet Access
Prestige 641 ADSL Internet Access Router
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