Research and Implementation of Transparent Bridge Supports Spanning Tree Protocol in HFC
Xiaotong Zhang · Jisuanji gongcheng · 2007
This paper presents a design of transparent bridge which can connect cable network and Ethernet in HFC network.The bridge is designed based on DOCSIS and supports MAC address learning,MAC frame filter and forwarding on MAC layer.The spanning tree protocol is employed in order to deactivate redundant network connections logically and reduce the topological loops to a tree topology consequently solve the problems of data feedback which result from the topological loops in HFC.The design has been successfully applied to the bidirectional system platform for HDTV,which consists of PHY chip and MAC chip developed in the authors’ lab.The design can effectually deactivate network redundancy and prevent the generation of broadcast storm.