Chapter 29 PPPoE
XMG1930 Series User’s Guide
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C
HAPTER
29
PPPoE
29.1 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.
29.1.1 What You Can Do
• Use the
PPPoE
screen (
) to display the main PPPoE screen.
• Use the
Intermediate Agent
screen (
) to enable the PPPoE Intermediate
Agent on the Switch.
• Use the
PPPoE IA Per-Port
screen (
) to set the port state and configure
PPPoE intermediate agent sub-options on a per-port basis.
• Use the
PPPoE IA Per-Port Per-VLAN
) to configure PPPoE IA settings
that apply to a specific VLAN on a port.
• Use the
PPPoE IA for VLAN
) to enable the PPPoE Intermediate Agent on a
VLAN.
29.1.2 What You Need to Know
Read on for concepts on ARP that can help you configure the screen in this chapter.
29.1.2.1 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.
