Shared-Memory Combined Input-Crosspoint Buffered Packet Switch for Differentiated Services

— Combined input-crosspoint buffered (CICB) packet switches with dedicated crosspoint buffers require a minimum amount of memory in the buffered crossbar of N2 × k × L, where N is the number of ports and k is the crosspoint buffer size, which is defined by the distance between the line cards and the buffered crossbar, to achieve 100% throughput under highspeed data flows. A long distance between these two components can make a buffered crossbar costly to implement. In this paper, we study a shared-memory crosspoint buffered packet switch that uses small crosspoint buffers and no speedup to support differentiated services and long distances between the line cards and the buffered crossbar in practical implementations. The proposed switch requires a buffer memory of 1 m of that in a CICB switch with dedicated crosspoint buffers to achieve similar throughput performance to that of a CICB switch.

• Type: Conference
• Year: 2006
• Where: GLOBECOM
• Authors: Ziqian Dong, Roberto Rojas-Cessa
• Keywords: Crosspoint Buffered Packet, Crosspoint Buffers, Dedicated Crosspoint Buffers, GLOBECOM 2006, Telecommunications