Pppoe; Chapter 41 Pppoe; Pppoe Intermediate Agent Overview; What You Can Do - ZyXEL Communications GS1920v2 Series User Manual

41.1 PPPoE Intermediate Agent Overview

This chapter describes how the Switch gives a PPPoE termination server additional information that the
server can use to identify and authenticate a PPPoE client.
A PPPoE Intermediate Agent (PPPoE IA) is deployed between a PPPoE server and PPPoE clients. It helps
the PPPoE server identify and authenticate clients by adding subscriber line specific information to
PPPoE discovery packets from clients on a per-port or per-port-per-VLAN basis before forwarding them
to the PPPoE server.

41.1.1 What You Can Do

• Use the PPPoE Intermediate Agent screen
Intermediate Agent on the Switch.
• Use the PPPoE IA Port screen
intermediate agent sub-options on a per-port basis.
• Use the PPPoE IA Port VLAN screen
apply to a specific VLAN on a port.
• Use the PPPoE IA VLAN
VLAN.

41.1.2 What You Need to Know

Read on for concepts on ARP that can help you configure the screen in this chapter.
41.1.2.1 PPPoE Intermediate Agent Tag Format
If the PPPoE Intermediate Agent is enabled, the Switch adds a vendor-specific tag to PADI (PPPoE
Active Discovery Initialization) and PADR (PPPoE Active Discovery Request) packets from PPPoE clients.

Chapter 41 PPPoE

(Section 41.2 on page
(Section 41.3 on page
(Section 41.4 on page
(Section 41.5 on page 256) to enable the PPPoE Intermediate Agent on a
GS1920v2 Series User's Guide
249
C
H A P T E R
251) to enable the PPPoE
253) to set the port state and configure PPPoE
254) to configure PPPoE IA settings that
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PPPoE