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LCN
2002
IEEE

Parallel Packet Switching Using Multiplexors with Virtual Input Queues

14 years 15 hour ago
Parallel Packet Switching Using Multiplexors with Virtual Input Queues
Parallel Packet Switches (PPS) use internal, parallel switch planes that operate at less than line speed. A PPS can scale-up to faster line speeds than a single-plane switch can. Load balancing between planes and providing QoS to flows are open problems. We investigate the performance of a new “VIQ PPS” that distributes cells or variable-length packets to planes and uses multiplexors with virtual input queues (VIQ). A VIQ at an output multiplexor consists of one FIFO queue for each input. Simulation is used to evaluate the performance of a 10-Gbps VIQ PPS that contains ten 1Gbps switch planes. It is found that at high offered loads the mean delay of a VIQ PPS switch is lower than that of a single-plane iSLIP switch. For unbalanced loads, the VIQ PPS demonstrates stability where an iSLIP switch is unstable. Especially promising results are shown for VIQ PPS native switching of variable-length Ethernet packets.
Ahmed Aslam, Kenneth J. Christensen
Added 15 Jul 2010
Updated 15 Jul 2010
Type Conference
Year 2002
Where LCN
Authors Ahmed Aslam, Kenneth J. Christensen
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