Abstract: A first intermediate network device among one or more intermediate network devices performs link training on a first network link extending between the first intermediate network device and a first host network device. The first intermediate network device or a second intermediate network device among the one or more intermediate network devices performs link training on a second network link extending between the first intermediate network device or the second intermediate network device and a second host network device. The one or more intermediate network devices determine when link training of the first network link and the second network link has been completed, and transmit respective link training completion indications to the first host network device and the second host network device. Transmission of the respective link training completion indications includes delaying transmission until link training of both the first network link and the second network link has been completed.

Abstract: The present invention relates to data communication systems and methods thereof. In a specific embodiment, a receiver includes a trigger circuitry that selects a subset of encoded data blocks to measure the performance of a communication lane. Partial syndromes—based on these partial data blocks—are used in partial syndrome calculations, and they are later combined to form full syndromes. A decoder is configured to decode the full syndromes. There are other embodiments as well.

Abstract: Methods and apparatus for eliminating loops associated with interconnects between clusters are disclosed. According to one aspect of the present invention, a method for operating a cluster of an interconnect group that includes at least one node and is in communication with a plurality of interconnects includes broadcasting a first frame on the interconnects. The method also includes receiving a second frame, the second frame being received on only a first interconnect, and blocking the second frame from being broadcast on the first interconnect. Finally, the method includes broadcasting the received second frame throughout the cluster such that no node in the cluster receives more than one copy of the second frame.

Abstract: Methods and apparatus for eliminating loops associated with interconnects between clusters are disclosed. According to one aspect of the present invention, a method for operating a cluster of an interconnect group that includes at least one node and is in communication with a plurality of interconnects includes broadcasting a first frame on the interconnects. The method also includes receiving a second frame, the second frame being received on only a first interconnect, and blocking the second frame from being broadcast on the first interconnect. Finally, the method includes broadcasting the received second frame throughout the cluster such that no node in the cluster receives more than one copy of the second frame.