Mark Lewis is technical director of MJL Network Solutions and currently specializes in data center and low latency network technologies, as well as unified communications. He assists with the setting of network evolution and standards, designs networks, and assists with network deployment. Mark is a Cisco Certified Internetwork Expert (CCIE#6280) and a Certified Cisco Systems Instructor (CCSI), as well as being an active participant in the IETF and a member of the IEEE. Mark is the author of the Cisco Press titles Comparing, Designing, and Deploying VPNs (ISBN 1-58705-179-6), Troubleshooting Virtual Private Networks (ISBN 1-58705-104-4), and CCIE Voice Quick Reference Sheets (ISBN-1-58705-333-0).
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