Hewlett-packard Development Company, L.p.

Hewlett Packard Enterprise Development LP

Jayaram Mudigonda

Praveen Yalagandula

Jeffrey Clifford Mogul

Parthasarathy Ranganathan

Paul T Congdon

Kevin B Leigh

Puneet Sharma

Terrel L Morris

Michael S Schlansker

Sujata Banerjee

Yoshio Frank Turner

Nathan Lorenzo Binkert

Dwight L Barron

Matteo Monchiero

Bryan E Stiekes

Partha Ranganathan

Guodong Zhang

Lucian Popa

Anna Fischer

Naveenam Padmanabha Lakshminarasimhan

Reddy Sreedhar

Joseph P Chabarek

Bryan Stiekes

Systems, methods, and computer-readable executable instructions are provided for implementing an energy proportional network architecture. Implementing an energy proportional network architecture can include determining a number of desired network criteria and a desired number of access ports. A number of switches for the energy proportional network architecture can be calculated from the desired number of access ports and the number of desired network criteria. Implementing an energy proportional network architecture can also include using the number of calculated switches to form the energy proportional network.

Implementing an energy proportional network architecture from desired network criteria

A switch, a system and operational method for packet switching between virtual machines running in a server and a network. The server comprises a switch with swappable, virtual ports. The switch routes packets to and from the various virtual machines resident in the server memory.

Server switch integration in a virtualized system

Selected ones of multiple groups of network entities are assigned to corresponding routing structures, where each of the routing structures defines a set of paths through a network among network entities of a corresponding one of the groups. The assigning considers available multicast resources in communication nodes in the network, and a criterion relating to reducing overall cost in the assignment of the selected groups to the corresponding routing structures.

Assigning selected groups to routing structures

Example methods, apparatus, and articles of manufacture to control generation of memory access requests in processor systems are disclosed. A disclosed example method involves determining at a memory controller whether a memory access queue depth for a memory reference is greater than a first threshold. When the memory access queue depth for the memory reference is greater than the first threshold, an indication is sent to control generation of memory access requests corresponding to the memory reference.

Methods and apparatus to control generation of memory access requests

A network switch for reducing TCP timeouts due to incast collapse is disclosed. The network switch has a plurality of buffers for storing network packets for at least one sender server. An incast buffer management component in the network switch allocates a buffer in the plurality of buffers to store an incast notification packet, the incast notification packet indicating one or more network packets that have been dropped by the network switch. The network switch also includes an incast notification component for forwarding the incast notification packet to a destination server with an incast notification packet specific header.

Reducing TCP timeouts due to Incast collapse at a network switch

A method of generating a plurality of potential generalized fat tree network (GFT) topologies is provided herein. The method includes receiving parameters that specify a number of servers, a number of switches, and a number of ports in the switches. The parameters are for configuring an GFT topology. The method also includes generating a plurality of potential GFT topologies based on heuristics that favor higher bandwidth and lower latency. Generating the plurality of potential GFT topologies includes generating each level of the potential GFT topologies, recursively, and from a bottom level of a potential GFT topology to a top level.

Generating EGFT network topologies

A scalable, multi-tenant network architecture for a virtualized datacenter is provided. The network architecture includes a network having a plurality of servers connected to a plurality of switches. The plurality of servers hosts a plurality of virtual interfaces for a plurality of tenants. A configuration repository is connected to the network and each server in the plurality of servers has a network agent hosted therein. The network agent encapsulates packets for transmission across the network from a source virtual interface to a destination virtual interface in the plurality of virtual interfaces for a tenant in the plurality of tenants. The packets are encapsulated with information identifying and locating the destination virtual interface, and the information is interpreted by switches connected to the source virtual interface and the destination virtual interface.

Scalable multi-tenant network architecture for virtualized datacenters

A network interface controller (NIC) determines link layer broadcast traffic of interest to the host environment. The NIC receives link layer broadcast traffic intended for the host environment, including traffic of interest and unwanted traffic. The NIC discards the unwanted traffic and forwards the traffic of interest to the host environment.

Forwarding broadcast traffic to a host environment

Connectors of a first removable modular optical connection assembly, having a first predefined arrangement of optical signal conduits, are connected to respective connectors on a support structure that are optically connected to corresponding devices. The first modular optical connection assembly is replaceable with a second modular optical connection assembly having a second, different predefined arrangement of optical signal conduits, to change a topology of a network.

Replaceable modular optical connection assembly

A method of generating a plurality of potential network topologies is provided herein. The method includes receiving parameters that specify a number of servers, a number of switches, and a number of ports in the switches. The parameters are for configuring a network topology. The method also includes generating one or more potential network topologies comprising the set of potential network topologies, for each of a number of dimensions. The number of dimensions is based on the number of switches. The method further includes determining that the set of potential network topologies is structurally feasible. Additionally, the method includes determining an optimal link aggregation (LAG) factor in each dimension of each of the set of potential network topologies.

Generating network topologies

A system and method for implementing a VM to identify a data packet for transmission, the data packet including a QoS the data packet is to receive as compared to another QoS that another data packet is to receive. The system and method further includes a SNIC to pull the data packet from the VM based upon the QoS the data packet is to receive. The system and method may also include a link scheduler module to transmit the data packet based upon the QoS the data packet is to receive. The system and method may also include a receiver to receive a management instruction from a network management device, the management instruction to dictate the QoS the data packet is to receive based upon a SLA.

Establishing network quality of service for a virtual machine

Managing a forwarding table in a switch of a computer network includes determining an entry in the forwarding table in a data plane in the switch to replace with a new entry to minimize a future flooding caused by a forwarding table miss of the forwarding table. The managing also includes storing a forwarding information base in the control plane, and the forwarding information base includes entries from the forwarding table.

Managing a forwarding table in a switch

Proactive sending of an IP-to-MAC address binding for a node is performed if a node is determined to be a high fan-in node. If the node is determined to be a high fan-in node, the node periodically sends its IP-to-MAC address binding to nodes in a network. If the node is not determined to be a high fan-in node, the node sends its IP-to-MAC address binding in response to receiving a request for the node's IP-to-MAC address binding.

Proactive sending of an IP-to-MAC address binding for a high fan-in node

In a method for minimizing pathological flooding of a network using a destination node, a packet is received from a source node at the destination node. The packet is transmitted from the source node to the destination node along a path. A determination is made by a node whether the packet indicates a possibility of pathological flooding. In response to a determination that the packet indicates a possibility of pathological flooding, a dummy packet is forwarded along the path to the source node.

Growing community of inventors

San Jose, CA, United States of America

Jayaram Mudigonda