Abstract: An apparatus for detecting a degraded grid controller includes a status module that collects for individual grid controllers in a grid array a status update comprising a keepalive status and a connectivity indicator and/or a pending transaction indicator between pairs of the individual grid controllers. The apparatus also includes a responsiveness module that determines a responsiveness indicator for a particular grid controller based on the keepalive status and the connectivity indicator and/or the pending transaction indicator of the particular grid controller. The apparatus further includes a configuration module that removes the particular grid controller of the individual grid controllers from use in the grid array in response to the responsiveness module determining that the responsiveness indicator of the particular grid controller indicates that the particular grid controller is degraded.

Abstract: Methods and systems for data origin verification are provided. A system for providing data origin verification includes a data injection module that injects origin information into separate bodies in a plurality of bodies. The origin information identifies a body in the plurality of bodies into which the origin information was injected. Also, the system includes a read data module that reads origin information from one or more bodies in the plurality of bodies. Additionally, the system includes an origin identifier module that determines a body in the plurality of bodies where the read origin information originated based on origin information contained in the read data.

Abstract: Methods and systems for transaction fencing in a multi-domain network are provided. A system for providing transaction fencing in a multi-domain network includes an error identification module that identifies a communication error between a source domain and a destination node. The communication error is associated with a connection in a plurality of connections between a plurality of domains. Additionally, the system includes a tearing module that disconnects the destination node from the plurality of domains and clears outstanding transactions associated with the destination node in the plurality of domains. Further, the system includes a connection enable module that enables connections between the plurality of domains and the destination node.

Abstract: Methods and systems for transaction fencing in a multi-domain network are provided. A system for providing transaction fencing in a multi-domain network includes an error identification module that identifies a communication error between a source domain and a destination node. The communication error is associated with a connection in a plurality of connections between a plurality of domains. Additionally, the system includes a tearing module that disconnects the destination node from the plurality of domains and clears outstanding transactions associated with the destination node in the plurality of domains. Further, the system includes a connection enable module that enables connections between the plurality of domains and the destination node.

Abstract: An apparatus for detecting a degraded grid controller includes a status module that collects for individual grid controllers in a grid array a status update comprising a keepalive status and a connectivity indicator and/or a pending transaction indicator between pairs of the individual grid controllers. The apparatus also includes a responsiveness module that determines a responsiveness indicator for a particular grid controller based on the keepalive status and the connectivity indicator and/or the pending transaction indicator of the particular grid controller. The apparatus further includes a configuration module that removes the particular grid controller of the individual grid controllers from use in the grid array in response to the responsiveness module determining that the responsiveness indicator of the particular grid controller indicates that the particular grid controller is degraded.

Abstract: Methods and systems for data origin verification are provided. A system for providing data origin verification includes a data injection module that injects origin information into separate bodies in a plurality of bodies. The origin information identifies a body in the plurality of bodies into which the origin information was injected. Also, the system includes a read data module that reads origin information from one or more bodies in the plurality of bodies. Additionally, the system includes an origin identifier module that determines a body in the plurality of bodies where the read origin information originated based on origin information contained in the read data.