Zyxel VES-1616FE-55A [187/318] Pppoa to pppoe

VES-1616FE-55A User’s Guide

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CHAPTER 29

PPPoA to PPPoE

This chapter shows you how to set up the VES-1616FE-55A to convert PPPoA frames to

PPPoE traffic and vice versa.

29.1 PPPoA to PPPoE Overview

Before migrating to an Ethernet infrastructure, a broadband network might consist of PPPoA

connections between the CPE devices and the DSLAM and PPPoE connections from the

DSLAM to the Broadband Remote Access Server (BRAS). The following figure shows a

network example.

Figure 110 Mixed PPPoA-to-PPPoE Broadband Network Example

In order to allow communication between the end points (the CPE devices and the BRAS),

you need to configure the DSLAM (the VES-1616FE-55A) to translate PPPoA frames to

PPPoE packets and vise versa.

When PPPoA packets are received from the CPE, the ATM headers are removed and the VES-

1616FE-55A adds PPPoE and Ethernet headers before sending the packets to the BRAS.

When the VES-1616FE-55A receives PPPoE packets from the BRAS, PPPoE and Ethernet

headers are stripped and necessary PVC information (such as encapsulation type) is added

before forwarding to the designated CPE.

29.2 PPPoA to PPPoE Screen

Use this screen to set up PPPoA to PPPoE conversions on each port. This conversion is set up

by creating a PAE PVC. See Chapter 13 on page 97 for background information about creating

PVCs. To open this screen, click Advanced Application > PPPoA to PPPoE.

BRAS

PPPoE

PPPoA

Client