Efficient Multicast Support in Buffered Crossbars Using Networks on Chip

Date Added: Aug 2009
Format: PDF

The Internet growth coupled with the variety of its services is creating an increasing need for multicast traffic support by backbone routers and packet switches. Recently, buffered crossbar (CICQ) switches have shown high potential in efficiently handling multicast traffic. However, they were unable to deliver optimal performance despite their expensive and complex crossbar fabric. This paper proposes an enhanced CICQ switching architecture suitable for multicast traffic. Instead of a dedicated internal cross-point buffer for every input-output pair of ports, the crossbar is designed as a multi-hop Network on Chip (NoC).