C-DOCSIS系统头端的业务流分类转发器的实现

摘要

According to the C⁃DOCSIS which is proposed by broadcast television network operators to realize the fusion of three networks,in allusion to the limit of rules of exchanging chip in the classification retransmission module at the system’s front⁃end,the principle of classification retransmission and filtration processing of exchanging chip’s two⁃layer service flow is in⁃troduced,and a method based on the hierarchical filtering of filtration processor on the exchanging chip is proposed,which can satisfy more users and reduce cost. The experiment testing results proved the feasibility and stability of this means.%针对广电运营商为实现三网融合业务提出的电缆数据业务接口规范（C⁃DOCSIS），其系统头端分类转发模块的交换芯片规则条目有限的问题，通过介绍交换芯片的二层业务流的分类转发和过滤器处理的原理，提出了基于交换芯片上过滤处理器分层过滤的方法，能够满足更多用户数目，节约成本的分类转发器的设计方法，最后通过实验测试证明了这种方法的可行性和稳定性。