Services such as Internet protocol television (IPTV) accelerate bandwidth growth in the network, and also increase the demand for policing and scheduling the traffic on the network. Next-generation enterprise, metro, and core networks require high-speed traffic management solutions to deliver the bandwidth and intelligence necessary for delivering killer applications. Altera's Stratix® series FPGAs enable you to deliver 40-Gbps and 100-Gbps traffic management optimized for your specific application requirements.
The main bottleneck in developing high-speed traffic management solutions is the external memory bandwidth necessary to buffer the packets. In-line traffic management silicon must maintain memory throughput up to 3X the line rate for DDR technologies, and 2.5X the line rate for RLDRAM II technologies. A simplex 40-Gbps traffic manager could require up to 120 Gbps of external memory throughput, while a full-duplex traffic manager could require up to 240 Gbps. See Table 1.