Certain embodiments presented herein relate to load balancing of data transmissions among a plurality of paths between endpoints (EPs) coupled to virtual switches. In particular, between the virtual switches there may be a number of physical paths for the data to be communicated between the EPs. Each path may have a different congestion level. Certain embodiments relate to selecting a path of the plurality of paths between EPs to communicate data between the EPs based on the congestion levels associated with each of the plurality of paths. In certain embodiments, a virtual switch determines a congestion level of each of the plurality of paths, selects a path of the plurality of paths based on the determined congestion level, and sets source port information of network packets to correspond to the selected path so that the network packets are communicated along the selected path.
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