Nash Darukhanawalla, CCIE No. 10332, has more than 25 years of internetworking experience. He has held a wide variety of consulting, technical, product development, customer support, and management positions. Nash's technical expertise includes extensive experience in designing and supporting complex networks with a strong background in configuring, troubleshooting, and analyzing network systems. Nash has been with Cisco for more than 10 years and is currently an engineering manager in the Enhanced Customer Aligned Testing Services (ECATS) group in the Advanced Services organization. Nash graduated with a bachelor of science degree in physics and computer science from the University of Bombay, India, and is a CCIE in routing and switching. He has written several white papers on various technologies and recently wrote the System Assurance Guide on High Availability Campus Network Design – Routed Access Using EIGRP or OSPF.