Design and Implementation of Packet Switching Capabilities on 10GbE MAC Core

R. ARENAS, J. M. FINOCHIETTO, L. ROCHA

Ipojuca, Brazil

Conferencia; VI Southern Programmable Logic Conference; 2010

This paper proposes the integration of packet switching capabilities to 10 Gigabit Ethernet (10GbE) Medium Access Control (MAC) devices. For this purpose, the architecture of a MAC core is first analyzed to evaluate where these capabilities can be best placed. Next, a general packet switching architecture is proposed which comprises classification, queueing and scheduling stages. The proposed classification stage exploits the intrinsic latency of the MAC processing to simultaneously inspect the packet header and determine the destination queue where the packet is to be stored. The proposed architecture was implemented and integrated inside a 10GbE MAC core, and validated on a FPGA development board. The main contribution of this work is the analysis, design and verification of an advance MAC core implementation which integrates switching capabilities. This architecture is evaluated in terms of resource usage and scalability.