The invention discloses a network aggregation system, apparatus and method for creating aggregated network connections to provide high availability and increased throughput where the plurality of network connections may possess diverse physical and logical characteristics. Increased throughput on the aggregated network connection equals the sum of the available throughput on the aggregated network connections. Aggregation is performed in a transparent fashion, independent of any physical or logical characteristics of the individual connections. Network connectivity over the aggregated connection is managed such that the loss or gain of connectivity in an individual connection among the aggregated group does not result in the loss of data from the data stream aggregation device.