Cisco's massive user show, Cisco Live, is going on this week in Las Vegas. Padmasree Warrior, Cisco's senior vice president of engineering and CTO sat down with Cisco Subnet editor and blogger Julie Bort. They discussed Cisco's progress since Warrior took the helm as CTO, the reorganization of Cisco's engineering groups, Catalyst vs. Nexus, the so-called Cisco "tax" (its prices vs. the competition), network virtualization, Cisco's toe dipping into the brave new world of open source and the future careers of the Cisco CCIE faithful. What follows is an edited transcript of the interview. 

Cisco's massive user show, Cisco Live, is going on this week in Las Vegas. Padmasree Warrior, Cisco's senior vice president of engineering and CTO sat down with Cisco Subnet editor and blogger Julie Bort. They discussed Cisco's progress since Warrior took the helm as CTO, the reorganization of Cisco's engineering groups, Catalyst vs. Nexus, the so-called Cisco "tax" (its prices vs. the competition), network virtualization, Cisco's toe dipping into the brave new world of open source and the future careers of the Cisco CCIE faithful. What follows is an edited transcript of the interview.