Strategies for the interconnection of CAN buses through an Ethernet switch

This paper discusses the use of an Ethernet switch to interconnect remotely located fieldbuses, e.g. CAN. Mastering delays of flows is a key issue in such architectures. The focus of this paper is to propose and analyze bridging strategies for the gateways between CAN and the Ethernet switch. Our previous studies have highlighted the benefits of an optimal design of encapsulation policies at ingress gateways to the switch. In this paper, we show that regulating CAN traffic at the egress gateways is essential as well to provide timely transport of CAN flows.