Abstract:To overcome the flux control defect of tbf under Linux environment,the Extended Token Barral Filter(etbf) which can distribute fixed bandwith to an IP of a LAN is put forward.By improving the kernel data structure,the enqueue and dequeue process of tbf,the Etbf extended the number of Token barral filter(tbf),each token barral can control an IP,eliminating the defect of tbf’s bandwith sharing.The result of the experiment shows that each IP can get an fixed bandwith,which achieving the expected effect.