Deep Medhi is Curators' Distinguished Professor in the Computer Science Electrical Engineering Department at the University of Missouri--Kansas City (UMKC), USA. Prior to joining UMKC in 1989, he was a member of the technical staff in the traffic network routing and design department at the AT&T Bell Laboratories. He was an invited visiting professor at the Technical University of Denmark, a visiting research fellow at the Lund University, Sweden, a research visitor at Universite Pierre et Marie Curie (UPMC), Paris, France, and a short-term visitor at Princeton University, Massachusetts Institute of Technology, and KTH Royal Institute of Technology, Sweden. He was also a Fulbright Senior Specialist. He was on the Brazilian Science Mobility Program with the University of Campinas, Brazil as his host institution. He serves as the editor-in-chief of Springer's Journal of Network & Systems Management, and is serving (or served) on the editorial board of IEEE Communications Surveys \& Tutorials, IEEE Transactions on Network and Service Management, IEEE/ACM Transactions on Networking, Computer Networks, Telecommunication Systems, and IEEE Communications Magazine. He has served on the technical program committees of numerous conferences including IEEE INFOCOM, IEEE ICNP, IEEE NOMS, IEEE IM, IEEE CloudNet, ITC, and DRCN, while serving as the Technical Program Co-Chair of DRCN 2009, IEEE NOMS 2010, IFIP Networking 2014, IEEE CloudNet 2016. He received his B.Sc.(Hons.) in Mathematics from Cotton College, Gauhati University, India, his M.Sc. in Mathematics from St.~Stephens College, University of Delhi, India, and both his M.S. and Ph.D. in Computer Sciences from the University of Wisconsin--Madison, USA. He % has published over one hundred and fifty peer-reviewed papers, and is co-author of Routing, Flow, and Capacity Design in Communication and Computer Networks, also published by Elsevier (2004).

"This book is unique in covering IP and PSTN routing in one place".- Jennifer Rexford, Professor of Computer Science, Princeton University"Medhi and Ramasamy offer unique and comprehensive coverage of the fundamentals and practical aspects of routing from design to operations and algorithms to implementation. This book is a 'must have' reference for network engineers as well as students and researchers who want to have a solid understanding of routing evolution and the latest developments for next-generation routing."- Prosper Chemouil, Director of Research Programs, France Telecom R&D; Fellow, IEEE"This book presents an introspective as well as practical perspective on Internet routing, including BGP, and how routers are built for routing. Along with its treatment of PSTN and transport routing, it covers the whole gamut in routing comprehensively."- Ravi Chandra, Chief Operating Officer, Sonoa Systems (co-author of six RFCs on BGP)

• Introduction / Part I: Packet Routing / Part II: Circuitswitched (Voice) Routing / Part III: Transport Routing / Part IV: Router and Switching Architecture / Part V: Integrated Routing & New Directions