Arista Networks (formerly known as Arastra), a start-up based in Menlo Park, California, announced the appointment of Jayshree Ullal as President and Chief Executive Officer, and Andreas Bechtolsheim as Chief Development Officer and Chairman.Jayshree Ullal was previously Senior Vice President of Cisco Systems, responsible for the company's Datacenter, Switching and Services Group. Andreas Bechtolsheim, a well-known Silicon Valley entrepreneur, was a Co-Founder of Sun Microsystems and a Senior Vice President and Chief Architect for the Systems...