SANTA CLARA,Michael Ressner, a former executive at Nortel and now a professor of finance and accounting at NC State University College of Management, is the newest member of the board at Riverstone Networks.

Ressner spent more than 22 years at Nortel, where he was chief financial officer. He also is an advisor for venture firm Southeast Interactive.

Riverstone develops switches and routers.

Riverstone: www.riverstonenet.com