Ivan Pepelnjak (CCIE#1354) is a 25-year veteran of the telecommunications industry, currently working as Chief Technology Advisor for NIL Data Communications (http://www.nil.com).
He was involved in consulting, planning, design, installation or integration of large corporate and ISP networks, including Deutsche Telekom, France Telecom, Mannesman Arcor, Telia and SITA.
He co-authored first IP-oriented Service Provider learning curriculum for Cisco Systems and wrote multiple books covering EIGRP and MPLS for Cisco Press.