Cisco Systems continues to dominate a worldwide Ethernet switch market that saw revenue hit $5.7 billion in the fourth quarter of 2012, a slight decline from the same period a year earlier but a healthy jump from the third quarter.

Ethernet switch sales fell 0.5 percent in the fourth quarter from the same period in 2011, though they jumped 7 percent from the third quarter of 2012, according to IDC analysts…. Read more: