Scalable Data Center Network Topology on Distributed Switch

A data center network structure comprising:

• at least ten base units each of which comprises set of a plurality of nodes in the data center network structure connected by southbound connections of corresponding multi-host network interface controllers, said multi-host network interface controllers having northbound a higher total bandwidth than southbound, each base unit also comprising a corresponding multi-host network interface controller;
• and
• a super unit comprising the ten base units with their respective multi-host network interface controllers connected in a modified Peterson graph form as an intragroup network such that the ten base units of the super unit comprise three groups each including three of the ten base units, in which each of said multi-host network interface controllers is configured to use three northbound connections for a direct connection to three other base units of the super unit, and in which two base units of each of the groups are connected via a respective one of a fourth intragroup northbound connection to one of said other two groups, and a remaining base unit out of said ten base units not being part of one of the three groups of three base units is configured to use three northbound connections for a direct connection to one base unit in each of the three groups, and wherein said multi-host network interface controllers are configured as dragonfly switches.