28

PPPoA to PPPoE

This chapter shows you how to set up the IES-612-51A to convert PPPoA frames to PPPoE traffic and vice versa.

28.1 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 101 Mixed PPPoA-to-PPPoE Broadband Network Example

 

 

 

 

 

 

 

 

 

 

DSLAM

 

 

 

 

Client

 

 

BRAS

 

 

PPPoA

PPPoE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In order to allow communication between the end points (the CPE devices and the BRAS), you need to configure the DSLAM (the IES-612-51A) 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 IES- 612-51A adds PPPoE and Ethernet headers before sending the packets to the BRAS. When the IES-612-51A 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.

28.2 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 107 for background information about creating PVCs. To open this screen, click Advanced Application, PPPoA to PPPoE.

 

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IES-612-51A User’s Guide