Patent application number | Description | Published |
20130258856 | METHOD AND SYSTEM FOR TRANSMITTING DATA PACKETS IN A NETWORK - A method for transmitting data packets from a first node to a second node. The method includes transmitting the data packet from the first node to the one second node where each data packet is determined to be sent according to a first or a second transmission mode, where, in the first transmission mode, the data packet is transmitted to the second node according to a prescheduled scheme, where the prescheduled scheme defines a cyclic one-to-one assignment between first and second node over time slots so that the data packet is forwarded to the second node during that time slot the one-to-one assignment of which assigns the first node with the one second node and in the second transmission mode, the data packet is transmitted during an actual time slot to the second node while overruling the prescheduled scheme. | 10-03-2013 |
20140122771 | WEIGHTAGE-BASED SCHEDULING FOR HIERARCHICAL SWITCHING FABRICS - Techniques are disclosed to implement a scheduling scheme for a crossbar scheduler that provides distributed request-grant-accept arbitration between input group arbiters and output group arbiters in a distributed switch. Input and output ports are grouped and assigned a respective arbiter. The input group arbiters communicate requests indicating a count of respective ports having data packets to be transmitted via one of the output ports. The output group arbiter attempts to accommodate the requests for each member of an input group before proceeding to a next input group. | 05-01-2014 |
20140204748 | ARBITRATION OF MULTIPLE-THOUSANDS OF FLOWS FOR CONVERGENCE ENHANCED ETHERNET - In one embodiment, a system includes a processor and logic integrated with and/or executable by the processor, the logic being adapted to: receive a plurality of flows, each flow comprising packets of data, assign a service credit to each of the plurality of flows, assign a weight parameter to each of the plurality of flows, select a flow from a head of a first control queue unless the first control queue is empty or there is indication that the first control queue should be avoided, wherein a flow is selected from a head of a second control queue when the first control queue is empty or there is indication that the first control queue should be avoided, provide a number of units of service to the selected flow, and decrease the selected flow's service credit by an amount corresponding to the number of units of service provided thereto. | 07-24-2014 |
20140269325 | BYPASSING CONGESTION POINTS IN A CONVERGED ENHANCED ETHERNET FABRIC - Embodiments relate to bypassing congestion points in a network. An aspect includes sampling queues of a plurality of switches in a network. When packet congestion is detected at a congestion point of a first switch, the packet flow contributing to the packet congestion is identified. A congestion notification message indicating the identified packet flow is then propagated to upstream switches, which are upstream from the first switch in the network. The congestion notification message is then snooped by the upstream switches. Virtual queues within the upstream switches are associated with the identified packet flow to hold packets associated with the identified packet flow. The packets associated with the identified packet flow are then re-routed to bypass the packet congestion in the first switch. | 09-18-2014 |
20140281021 | ADAPTIVE SETTING OF THE QUANTIZED CONGESTION NOTIFICATION EQUILIBRIUM SETPOINT IN CONVERGED ENHANCED EITHERNET NETWORKS - Embodiments relate to controlling workload flow on converged Ethernet links. An aspect includes coupling, by a processing device, a first control loop to a second control loop. The second control loop monitors the operation of the first control loop. An equilibrium set point is initialized for the second control loop prior to commencing operation of the first control loop. Accordingly, the equilibrium set point value is adjusted in the second control loop continuously based on a rate of operation of the first control loop. | 09-18-2014 |
20150019752 | ADAPTIVE SETTING OF THE QUANTIZED CONGESTION NOTIFICATION EQUILIBRIUM SETPOINT IN CONVERGED ENHANCED EITHERNET NETWORKS - Embodiments relate to controlling workload flow on converged Ethernet links. An aspect includes coupling, by a processing device, a first control loop to a second control loop. The second control loop monitors the operation of the first control loop. An equilibrium set point is initialized for the second control loop prior to commencing operation of the first control loop. Accordingly, the equilibrium set point value is adjusted in the second control loop continuously based on a rate of operation of the first control loop. | 01-15-2015 |
20150078170 | BYPASSING CONGESTION POINTS IN A CONVERGED ENHANCED ETHERNET FABRIC - Embodiments relate to bypassing congestion points in a network. An aspect includes sampling queues of a plurality of switches in a network. When packet congestion is detected at a congestion point of a first switch, the packet flow contributing to the packet congestion is identified. A congestion notification message indicating the identified packet flow is then propagated to upstream switches, which are upstream from the first switch in the network. The congestion notification message is then snooped by the upstream switches. Virtual queues within the upstream switches are associated with the identified packet flow to hold packets associated with the identified packet flow. The packets associated with the identified packet flow are then re-routed to bypass the packet congestion in the first switch. | 03-19-2015 |
20150207637 | MULTICAST PACKET ROUTING VIA CROSSBAR BYPASS PATHS - An approach is described for routing data to a plurality of output terminals via a integrated switch router including a crossbar switch having both a crossbar and a plurality of crossbar bypass lines. Whereas the crossbar may connect each input of the crossbar switch to each output of the crossbar switch, each of the plurality of crossbar bypass lines may connect a single input of the crossbar switch to a corresponding single output of the crossbar switch. According to such approach, a replicated copy of a multicast packet may be forwarded to an output terminal via a crossbar bypass line in parallel with other data forwarded via the crossbar, thus increasing integrated switch router bandwidth. | 07-23-2015 |
20150207638 | MULTICAST PACKET ROUTING VIA CROSSBAR BYPASS PATHS - An approach is described for routing data to a plurality of output terminals via a integrated switch router including a crossbar switch having both a crossbar and a plurality of crossbar bypass lines. Whereas the crossbar may connect each input of the crossbar switch to each output of the crossbar switch, each of the plurality of crossbar bypass lines may connect a single input of the crossbar switch to a corresponding single output of the crossbar switch. According to such approach, a replicated copy of a multicast packet may be forwarded to an output terminal via a crossbar bypass line in parallel with other data forwarded via the crossbar, thus increasing integrated switch router bandwidth. | 07-23-2015 |