Nerval's Lobster writes "Sorry, everybody: terabit Ethernet looks like it will have to wait a while longer. The IEEE 802.3 Industry Connections Higher Speed Ethernet Consensus group met this week in Geneva, Switzerland, with attendees concluding—almost to a man—that 400 Gbits/s should be the next step in the evolution of Ethernet. A straw poll at its conclusion found that 61 of the 62 attendees that voted supported 400 Gbits/s as the basis for the near term 'call for interest,' or CFI. The bandwidth call to arms was sounded by a July report by the IEEE, which concluded that, if current trends continue, networks will need to support capacity requirements of 1 terabit per second in 2015 and 10 terabits per second by 2020. In 2015 there will be nearly 15 billion fixed and mobile-networked devices and machine-to-machine connections."