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Clos vs Butterfly Topologies

Clos and butterfly are two different types of network topologies used in data center networks.

Clos topology, also known as a multistage fat-tree topology, is a network architecture that is commonly used in large-scale data centers.

The Clos topology consists of multiple levels of switches, with each level of switches interconnected in a specific way to create a highly efficient, scalable, and fault-tolerant network.

In a Clos topology, there are three stages of switches: access, aggregation, and core. Access switches are connected to servers, while aggregation switches are connected to access switches, and core switches are connected to aggregation switches.

The Clos topology allows for high-bandwidth, non-blocking, and fault-tolerant communication between servers.

Butterfly topology, also known as a flattened butterfly or fold network, is a network architecture that is commonly used in high-performance computing systems. In a butterfly topology, the network is arranged in the form of a butterfly or folded butterfly, with each node connected to a fixed number of other nodes in the network.

 The butterfly topology consists of a series of interconnected switches that are organized into groups, with each group being connected to other groups in a specific way.

The butterfly topology allows for efficient communication between nodes but may be less scalable and fault-tolerant than the Clos topology.

In summary, the Clos topology is commonly used in large-scale data centers and provides a highly efficient, scalable, and fault-tolerant network, while the butterfly topology is commonly used in high-performance computing systems and provides efficient communication between nodes, but may be less scalable and fault-tolerant than the Clos topology.

 

 

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