Cisco Systems will add switch-silicon vendor Greenfield Networks to its arsenal for metro Ethernet, a technology many service providers are now rolling out for business customers.Privately held Greenfield, founded in 2000, makes processors that can handle advanced functions in Ethernet switches and are positioned for carrier Ethernet networks. It is headed by Bill Rossi, former head of Cisco\u2019s wireless networking unit, and several other ex-Cisco executives. Terms of the deal were not disclosed.Metro Ethernet extends the familiar LAN technology out to a regionwide scale. Service providers are using it to offer high-speed business services with flexible bandwidth and an interface that enterprise network staffs already understand. Ethernet also generally costs less than traditional carrier network technologies, proponents say.Cisco is already a major player in metro Ethernet. Greenfield\u2019s technology is complementary and will be integrated with Cisco\u2019s own, helping the company bring out new carrier-class features more quickly, Cisco said. Greenfield\u2019s products support features such as packet prioritization, guaranteed bandwidth, multiprotocol label switching and IP Version 6. Greenfield is based in Sunnyvale, Calif., and has 60 employees there and in Bangalore, India. With regulatory approvals, the deal should close in the second quarter of Cisco\u2019s 2007 fiscal year, which ends in January. The employees and products will be integrated into Cisco\u2019s Ethernet and wireless technology group.-Stephen Lawson, IDG News Service (San Francisco Bureau)Related Links:\n\nCisco Q1 Profit, Revenue Surge\n\nCisco CEO Preaches Networks, Collaboration\n\nCisco Gets Into Enterprise Video Publishing\n\nCisco Enables Widescreen MeetingsCheck out our CIO News Alerts and Tech Informer pages for more updated news coverage.