(Optional) Configuring a Policy for Processing PPPoE Packets Sent by the PPPoE Server

Generally, the Switch does not process PPPoE reply packets and directly forwards them to the PPPoE client. Only when the PPPoE client cannot identify PPPoE packets that the Switch directly forwards, the Switch needs to process the PPPoE reply packets sent by the PPPoE server to ensure communication between the PPPoE server and PPPoE client. The PPPoE reply packets are processed as follows:

• When the policy for processing original fields in PPPoE packets is replace or keep:
  • If fields are not contained in PPPoE reply packets sent by the PPPoE server, the Switch directly forwards PPPoE reply packets.
  • If fields are contained in PPPoE reply packets sent by the PPPoE server and the format and content are consistent with those of the fields added to the user-side PPPoE packets, the Switch removes the original fields from PPPoE packets and forwards the packets. If the format and content are different from those of the fields added to the user-side PPPoE packets, the Switch directly forwards PPPoE reply packets.
• When the policy for processing original fields in PPPoE packets is drop, the Switch directly forwards the PPPoE packets.