Abstract:
A method for communication includes configuring a multi-level fat-tree network to include at least three levels of switches, including multiple modules arranged externally in a tree topology. Each module contains a respective group of the switches arranged in an internal tree extending over at least two of the levels of the network. A subset of the modules is selected to be active in carrying the communication traffic. The network is operated so as to convey communication traffic among the switches via the active modules, while the modules that are not in the selected subset remain inactive.
Abstract:
A network adapter includes one or more ports and circuitry. The ports are configured to connect to a switch in a communication network. The circuitry is coupled to a network node that includes multiple hosts, and is configured to exchange management packets between a control server and multiple BMC units associated respectively with the multiple hosts, and to exchange, over the communication network via the one or more ports, data packets between the hosts and one or more remote nodes.
Abstract:
A system and method for accelerating input/output (IO) access operation on a virtual machine, The method comprises providing a smart IO device that includes an unrestricted command queue (CQ) and a plurality of restricted CQs and allowing a guest domain to directly configure and control IO resources through a respective restricted CQ, the IO resources allocated to the guest domain. In preferred embodiments, the allocation of IO resources to each guest domain is performed by a privileged virtual switching element. In some embodiments, the smart IO device is a HCA and the privileged virtual switching element is a Hypervisor.
Abstract:
A method for communication in a packet data network that includes at least first and second subnets interconnected by multiple routers and having respective first and second subnet managers. The method includes assigning respective local identifiers to ports for addressing of data link traffic within each subnet, such that the first subnet manager assigns the local identifiers in the first subnet, and the second subnet manager assigns the local identifiers in the second subnet. The routers are configured by transmitting and receiving control traffic between the subnet managers and the routers. Data packets are transmitted between network nodes in the first and second subnets via one or more of the configured routers under control of the subnet managers.
Abstract:
A peripheral device includes a host interface and processing circuitry. The host interface is configured to communicate with a host over a peripheral bus. The processing circuitry is configured to expose on the peripheral bus a peripheral-bus device that communicates with the host using a bus storage protocol, to receive, using the exposed peripheral-bus device, Input/Output (I/O) transactions that are issued by the host, and to complete the I/O transactions for the host in accordance with a network storage protocol, by running at least part of a host-side protocol stack of the network storage protocol.
Abstract:
A network interface apparatus includes a host interface for connection to a host processor and a network interface, which includes multiple distinct physical ports. Processing circuitry associates each of a plurality of virtual entities running on the host processor with a respective one of the physical ports, so that while both of the first and second physical ports are operational, the processing circuitry transmits data packets on behalf of first and second virtual entities, using assigned upper-layer addresses, through associated first and second physical ports. In response to an indication that the first physical port has ceased to operate, the processing circuitry transmits the data packets on behalf of the first virtual entity through the second physical port without changing the upper-layer addresses.
Abstract:
A cross-network bridging apparatus includes a bus interface and bridging circuitry. The bus interface is configured for connecting to a system bus. The bridging circuitry is configured to translate between (i) system-bus transactions that are exchanged between one or more local devices that are coupled to the system bus and served by the system bus and one or more remote processors located across a network from the apparatus, and (ii) data units that convey the system-bus transactions, for transmitting and receiving as network packets over the network to and from the remote processors.
Abstract:
A method for designing a Network Function Virtualization (NFV) architecture includes accepting a definition of multiple Virtual Network Functions (VNFs), and of one or more packet types having respective occurrence probabilities, wherein each packet type is associated with a respective subset of the VNFs that are to be applied to packets of that packet type. Information on multiple available physical computers, each capable of running only a partial subset of the multiple VNFs, is further accepted. The VNFs are allocated to the physical computers by applying an optimality criterion to definition and the information.
Abstract:
A method for communication in a packet data network that includes at least first and second subnets interconnected by multiple routers and having respective first and second subnet managers. The method includes assigning respective local identifiers to ports for addressing of data link traffic within each subnet, such that the first subnet manager assigns the local identifiers in the first subnet, and the second subnet manager assigns the local identifiers in the second subnet. The routers are configured by transmitting and receiving control traffic between the subnet managers and the routers. Data packets are transmitted between network nodes in the first and second subnets via one or more of the configured routers under control of the subnet managers.
Abstract:
A system and method for accelerating input/output (IO) access operation on a virtual machine, The method comprises providing a smart IO device that includes an unrestricted command queue (CQ) and a plurality of restricted CQs and allowing a guest domain to directly configure and control IO resources through a respective restricted CQ, the IO resources allocated to the guest domain. In preferred embodiments, the allocation of IO resources to each guest domain is performed by a privileged virtual switching element. In some embodiments, the smart IO device is a HCA and the privileged virtual switching element is a Hypervisor.