Method for implementing Ethernet load-carrying point-to-point protocol authentication on very-high speed digital user loop

Abstract

The present invention provides a method for implementing Ethernet loaded point-to-point (PPPoE) protocol verification on the very-high speed digital user loop. The equipment distribution of terminal PPPoE can be simultaneously downward-moved, and the control message of PPPoE is processed by CPU, the service message can be processed by ASIC or FPGA. The adoption of said invented technical scheme can effectively reduce equipment cost for supporting PPPoE, at the same time the PPPoE equipment distribution can reduce the group-transmitting message copy work capacity of every PPPoE terminal equipment, so that the practical group transmission under the PPPoE mode also can be implemented.

Description

Technical field: [0001] The invention belongs to the technical field of network communication, in particular to a method for authenticating the point-to-point protocol over Ethernet (PPPoE). Background technique: [0002] At present, Ethernet packets are carried on the very high-speed digital subscriber line (VDSL), and PPPoE is used as an effective user authentication control protocol in most Ethernet access applications. IP packets must be encapsulated in PPPoE for transmission. PPPoE packets cannot be directly connected to the Internet. In the traditional solution, the IP packets in the authenticated PPPoE service packets must be recovered through the Broadband Access Server (BRAS), and then forwarded to the Internet. , that is, PPPoE termination. [0003] Traditionally, the BRAS terminates all PPPoE packets using a network processor (NP) or CPU. Using NP processing has high forwarding efficiency, but the development is difficult, the structure is complex, and the desi...

AI Technical Summary

Problems solved by technology

Using NP processing, the forwarding efficiency is high, but the development is difficult, the structure is complex, and the design and manufacturing costs are high; the use of CPU processing is low in cost, but the forwarding efficiency is poor

[0004] In addition, since PPPoE is a point-to-point protocol, it cannot directly support emerging IP multicast services. If the BRAS is used for copying and distribution, because one BRAS handles too many PPPoE sessions, the workload of message copying will be heavy. It will seriously occupy BRAS resources, resulting in a sharp drop in forwarding efficiency

Moreover, the position of the traditional BRAS in the network is relatively high, copying too many messages will cause the increase of network data volume, thus losing the advantages of the multicast protocol