Large bandwidth fiber-optic networks much larger than the typical bandwidth demands experienced by network service providers. Traffic treatment based on network design and resource allocation algorithms that can enable cost-efficient to use both network bandwidth and electronic switching. Due to increasing bandwidth of optical communication on the one hand, and a variety of growing traffic demand on the amount of care, other traffic has grown from a narrow research area with a major requirement for real-world practitioners. This book presents the practical motivation, theoretical description, and extant techniques for traffic in optical network maintenance.