Patent ID: 8005104
Filing Date: 2011-08-23
Classification: G06F,H04L

Abstract:
1. A cross bar comprising: a plurality of ports, wherein each port is operable to internally transfer, within the cross bar, data packets to every other port; wherein a first port of the plurality of ports is in communication with a switch that is external to the cross bar, wherein the first port comprises a link logic unit configured to receive, from the switch, a notification indicating that the switch is unable to receive additional data packets from the cross bar via the first port; and an output buffer configured to temporarily store the additional data packets while the switch is unable to receive the additional data packets, wherein the output buffer is configured to notify every other port not to send packets to the switch in response to an amount of the additional packets being stored in the output buffer reaching a first predetermined threshold, wherein while the switch is unable to receive the additional data packets from the cross bar via the first port, every other port is operable to continue to internally transfer, within the cross bar, data packets to every other port except the first port.