Network engineer expertise of 14 years, international career. Working on AT&T backbone network. Lessons are thought to be professionally oriented, for beginners but also junior-mid professionals. Engineering students who are dealing with networks exams can benefit. The spectrum of topics can be very broad, any specific requests is welcomed, all over telecommunications. Generally, I can prepare over these: CCNA/CCNP - routing/switching Optical networking - DWDM/OTN, SDH Advanced routing with BGP, OSPF, MPLS, ... Core networks The structure of the course is to be evaluated according to the students needs