ZyXEL Communications ES3500 Series 31.2The PPPoE Screen, 31.3 PPPoE Intermediate Agent, PPPoE, Click Here, Intermediate Agent, Advanced Application, Trusted ports are connected to PPPoE servers

Chapter 31 PPPoE

Trusted ports are connected to PPPoE servers.

•If a PADO (PPPoE Active Discovery Offer), PADS (PPPoE Active Discovery Session-confirmation), or PADT (PPPoE Active Discovery Terminate) packet is sent from a PPPoE server and received on a trusted port, the Switch forwards it to all other ports.

•If a PADI or PADR packet is sent from a PPPoE client but received on a trusted port, the Switch forwards it to other trusted port(s).

Note: The Switch will drop all PPPoE discovery packets if you enable the PPPoE intermediate agent and there are no trusted ports.

Untrusted ports are connected to subscribers.

•If a PADI, PADR, or PADT packet is sent from a PPPoE client and received on an untrusted port, the Switch adds a vendor-specific tag to the packet and then forwards it to the trusted port(s).

•The Switch discards PADO and PADS packets which are sent from a PPPoE server but received on an untrusted port.

31.2The PPPoE Screen

Use this screen to configure the PPPoE Intermediate Agent on the Switch.

Click Advanced Application > PPPoE in the navigation panel to display the screen as shown. Click Click Here to go to the Intermediate Agent screen.

Figure 143 Advanced Application > PPPoE Intermediate Agent

31.3 PPPoE Intermediate Agent

Use this screen to configure the Switch to give a PPPoE termination server additional subscriber information that the server can use to identify and authenticate a PPPoE client.

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	ES3500 Series User’s Guide