Core IP Routing and Switching Technology - Cvt-dallas.org
Core IP Routing and Switching Technology - Cvt-dallas.org
Core IP Routing and Switching Technology - Cvt-dallas.org
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Technologies - 1<br />
• Large Routers:<br />
– Require large, fast, non-blocking switch fabric<br />
– Traditional approaches (electronic crossbar, shared<br />
memory) have not scaled very well past 300 Gb/s<br />
– Per-trace b<strong>and</strong>width, Memory b<strong>and</strong>width<br />
limitations<br />
– Distributed Switches are being tried<br />
– Concerns about fault tolerance, rerouting, delay,<br />
reconfiguration difficulty<br />
– New approaches<br />
– High-speed signal I/O (3.125 10 Gb/s per pin)<br />
– All-optical Fabrics – need to switch fast<br />
– Difficult to schedule efficiently<br />
– Need massively parallel scheduling engine<br />
11
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