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Technical Director Howard C. Berkowitz
Annlee Hines
Barry Meinster
Chris Ackerman
Chuck Larrieu
Dale Holmes
Damarcus Richards
Dan Farkas
David Wolsefer
Dennis Laganiere
Don Dettmore
Galina Pildush
Jason Sinclair
John Neiberger
Katherine Tallis
Kevin Downes
Keyur Shah
Leigh Anne Chisholm
Marc R. Menninger
Marianne Lepp
Mark Poplar
Mike Sweeney
Peter A. Van Oene
Priscilla Oppenheimer
Richard Gosney
Rita Puzmanova
Rodgers Moore
Ronald Trunk
Scott Morris

Howard C. Berkowitz  Technical Director

Certification Zone Study Guides by Howard C. Berkowitz:

Access Lists




High Availability

IP Addressing

IPv4 & IPv6





Routing Principles

Scalable Routing - Link State


Howard C. Berkowitz is Chief Technology Officer of Gettlabs and Gett Communications. He is responsible for Gettlabs' virtual labs and his other work includes routing protocol research and design of life-critical medical networks. Current IETF work includes drafts on BGP convergence time, multihoming, and analyzing growth in the global routing table. He is the author or coauthor of several RFCs in IP addressing and international standards in performance testing. He is a member of Team B in the Internet Research Task Force, which is developing requirements for the successor to BGP and works with international operations forums such as NANOG, ARIN, and RIPE.

In the past, he was Senior Advisor, IP Routing, in Nortel's corporate R&D; laboratory. His research interests include the design of next-generation carrier routers, unicast routing protocols (BGP, OSPF, ISIS) and the overall problems of Internet routing system scalability. He was the internal co-manager for Nortel contributions to the Routing Area of the IETF and to the IETF and international operations forums such as NANOG and RIPE.

He became a Certified Cisco Systems Instructor in 1993, doing both network design and education. His certification is inactive because he no longer works for a Training Partner. He contributed to Cisco courses including Cisco Internetwork Design and Advanced Router Configuration as well as to Cisco seminars in switching, virtual private networks, and data-voice-video integration. He has also taught Cisco WAN products, and developed his own seminars in Internet routing with BGP and advanced interior routing and switching.

His operational experience includes consulting on design for a variety of advanced healthcare networks, broadband provider networks, the US government Y2K Information Center, US government networks including the Library of Congress, AT&T;, Lucent, and advising MCI on an assortment of worldwide customer networks.

Howard's latest book is Building Service Provider Networks. His previous books include the WAN Survival Guide, which deals with making choices about which service level agreements are needed and how to select technologies to meet them. His other books are Designing Addressing Architectures for Routing and Switching, and Designing Routing and Switching Architectures for Enterprise Networks. In addition, he has written dozens of articles for the industry press and spoken at numerous trade shows and user groups.

Interview with the Author - Q&A; regarding IPv4 & IPv6

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