Abstract
The rapid development of cloud computing goes along with the explosion of internal network traffic in the cloud. In this paper, we analyzed the usage of fields of internal packet of cloud, and customize the packets based on the statistical results. We remove unneeded fields of header in order to compress the packet size. Because other machines can not read customized packets, we modify the network portion of the Linux kernel, and make it have capability to send and receive customized packets. The result of experiment shows that the compression ratio is 1.9, space-saving rate is about 47.4%.