Abstract: A system for configuring a network topology in a data center is disclosed. The data center includes nodes having ports capable of supporting data links that can be connected to other nodes. The system includes a memory and a processing unit coupled to the memory. The processing unit receives demand information indicative of demands between nodes. The processing unit determines a set of constraints on the network topology based on the nodes, feasible data links between the nodes, and the demand information. The processing unit determines an objective function based on a sum of data throughput across data links satisfying demands. The processing unit performs an optimization of the objective function subject to the set of constraints using a linear program. The processing unit configures the network topology by establishing data links between the nodes according to results of the optimization.

Abstract: A system for configuring a network topology in a data center is disclosed. The data center includes nodes having ports capable of supporting data links that can be connected to other nodes. The system includes a memory and a processing unit coupled to the memory. The processing unit receives demand information indicative of demands between nodes. The processing unit determines a set of constraints on the network topology based on the nodes, feasible data links between the nodes, and the demand information. The processing unit determines an objective function based on a sum of data throughput across data links satisfying demands. The processing unit performs an optimization of the objective function subject to the set of constraints using a linear program. The processing unit configures the network topology by establishing data links between the nodes according to results of the optimization.

Abstract: A system determines a physical topology of a network including a plurality of nodes. Each node includes a multi-chip higher-tier switch, and each chip in the multi-chip higher-tier switch includes a plurality of ports. A network configuration module is configured to assign physical connections to respective ports of chips of the higher-tier switches through an iterative process. The iterative process includes selecting a first route of a plurality of routes, assigning for the source node of the selected route, a first port on a first chip having an odd number of free ports. For at least one intermediate node of the selected route, second and third ports on a second chip having an even number of free ports are assigned. For a destination port for the selected route, a fourth port on a third chip having an odd number of free ports is assigned.

Abstract: The present disclosure describes systems and methods for reconfiguring the links made by a plurality of optical circuit switches between the nodes of the first layer and the nodes of the second layer that reduces the throughput loss when the network transitions form a first logical topology to a second logical topology. More particularly, the first logical topology is realized by a specific physical topology, while the second logical topology may be realized by one or more physical topologies. The disclosure describes a method for selecting a second physical topology from the one or more physical topologies that will realize the second logical topology while reducing the number of links within each of the optical circuit switches that must be reconfigured (i.e, disconnected from their present ports and reconnected to new ports within the optical circuit switch) to transition from the first to second logical topology.