MLR networks can be designed to provide flexible rate assignments to low-bit-rate services and high-bit-rate services in a cost-effective manner. http://ns2code.com/
MLR network concepts:
• Heterogeneity of the traffic matrix
• balancing the capacity and distance
• optical wavelength division multiplexing
• minimize the energy consumption
• transmission capacity
• power efficient architecture
• time division switching architecture
• Traffic grooming
• wavelength assignment considering PLI
• WDM in transport network
• Routing strategies
• Cross rate interference