PPPoE snooping enables devices that receive and forward PPPoE discovery (PPPoED) packets to analyze these packets and to supplement them with additional information. This information can be used by a PPPoE access concentrator (AC) to process the PPPoED data packets accordingly. This role is called the "PPPoE-Intermediate-Agent".
PPPoE snooping in the LCOS processes the following PPPoED packets:
- PADI (PPPoE Active Discovery Indication)
- PADR (PPPoE Active Discovery Request)
- PADT (PPPoE Active Discovery Terminate)
The PPPoE intermediate agent, which is responsible for the PPPoE snooping, supplements the PPPoED packet with manufacturer-specific attributes (circuit ID and remote ID), and any existing IDs in received packets are replaced with its own values.
- The remote ID: Uniquely identifies the client making a PPPoE request.
- Circuit ID: Uniquely identifies the interface used by a client to make a PPPoE request.
PPPoE snooping is configured for each LAN/WLAN interface.
