Emulation of Router Functions Based on A Cloud Platform

With the development of the Internet, new architecture technologies and protocols will have to be tested and evaluated through emulation. Router emulation plays a significant role in network emulation. Based on cloud platform and virtualization technology, this paper researches emulation technology that can support various router functions, e.g., router protocols, packet filtering, priority policy, and quality of service (QoS). First, based on virtualization technologies, the emulation of router protocols is implemented by using router software technology. Then, Iptables and traffic control (TC) are used to implement emulations of packet filtering, priority policy and QoS. Finally, an automated deployment mechanism for the proposed virtual router is realized to provide ease of use. Experiments with various topologies verify that the designed virtual router can provide routing capability, packet filtering, priority policy and QoS.