Chapter 3; Wizard Setup Introduction; Encapsulation - Telkom ADSL 5100 Instruction Manual

Chapter 3

Wizard Setup
This chapter provides information on the Wizard Setup screens in the web configurator.

3.1 Wizard Setup Introduction

Use the Wizard Setup screens to configure your system for Internet access.Your ISP may have
already configured some of the fields in the wizard screens for you.

3.2 Encapsulation

At the moment Telkom use Routed PPPoE (Par. 3.2.2) or Bridge RFC1483 (Par. 3.2.4). The
TELKOM ADSL 5100 supports the following methods.
3.2.1 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 the second wizard
screen. You can get this information from your ISP.
3.2.2 PPP over Ethernet
PPPoE provides access control and billing functionality in a manner similar to dial-up services
using PPP. The TELKOM ADSL 5100 bridges a PPP session over Ethernet (PPP over Ethernet,
RFC 2516) from your computer to an ATM PVC (Permanent Virtual Circuit) which connects to
ADSL 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 appendix.
3.2.3 PPPoA
PPPoA stands for Point to Point Protocol over ATM Adaptation Layer 5 (AAL5). It provides access
control and billing functionality in a manner similar to dial-up services using PPP. The TELKOM
ADSL 5100 encapsulates the PPP session based on RFC1483 and sends it through an ATM PVC
(Permanent Virtual Circuit) to the Internet Service Provider's (ISP) DSLAM (digital access
multiplexer). Please refer to RFC 2364 for more information on PPPoA. Refer to RFC 1661 for
more information on PPP.
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