Abstract: Methods, systems, and computer programs are presented for managing network switching. A network device operating system (ndOS) program includes instructions for exchanging switching policy regarding switching network packets in a plurality of ndOS devices having ndOS programs. The first ndOS program is executed in a first ndOS device, and the switching policy is exchanged with other ndOS programs via multicast messages. Further, the ndOS program includes instructions for exchanging resource control messages with the other ndOS devices to implement service level agreements in the switching fabric, where the ndOS switching devices cooperate to enforce the service level agreements. Further yet, the ndOS program includes instructions for receiving changes to the switching policy, and instructions for propagating the received changes to the switching policy via message exchange between the ndOS programs. The ndOS devices are managed as a single logical switch that spans the plurality of ndOS devices.

Abstract: Methods, systems, and computer programs are presented for networking communications. One embodiment of a system includes a switch module having one or more ports with a communications interface of a first type and a switch fabric. The system also includes a switch controller that is in communication with the switch module, the switch controller having a first network operating system (ndOS) for controlling packet switching policy in the switch module. The system further includes a server that executes a hypervisor for processing one or more virtual machines. The sever includes a communication interface of the first type for communicating with the switch module, one or more processors, a second ndOS, and one or more virtual network interface cards (VNIC) for communicating with the switch module via the communication interface of the first type.

Abstract: Methods, systems, and computer programs are presented for managing a global network topology. One method includes an operation for generating, by a network device, a local topology identifying which network entities are connected to each external port of the network device. The network device is configured to execute a network device operation system (ndOS), and the network device is configured to share information associated with the local topology with other ndOS network devices that execute ndOS. Further, the method includes an operation for receiving one or more remote local topologies from respective one or more ndOS network devices. The network device generates a global topology based on the local topology and the one or more remote local topologies, where the global topology is shared by the network device and the ndOS network devices executing ndOS, and the global topology identifies which entities are connected to one or more of the ndOS network devices.

Abstract: One networking device includes a switch module, a server, and a switch controller. The switch module has ports with a communications interface of a first type (CI1) and ports with a communications interface of a second type (CI2). The server, coupled to the switch module via a first CI2 coupling, includes a virtual CI1 driver, which provides a CI1 interface in the server, defined to exchange CI1 packets with the switch module via the first CI2 coupling. The virtual CI1 driver includes a first network device operating system (ndOS) program. The switch controller, in communication with the switch module via a second CI2 coupling, includes a second ndOS program controlling, in the switch module, a packet switching policy defining the switching of packets through the switch module or switch controller. The first and second ndOS programs exchange control messages to maintain a network policy for the switch fabric.

Abstract: Methods and systems for switching a network packet at a switching device are provided. One method includes operations for receiving a packet having a media access control (MAC) address, and for switching the packet by a switch fabric if the MAC address is present in one or more memories associated with the switch fabric. The method also includes operation for switching the packet by a network device operating system (ndOS) if the MAC address is absent from the one or more memories.

Abstract: Methods, systems, and computer programs are presented for managing a network in the presence of layer-2 loops. One method includes an operation for detecting, by a network device, a loop at a layer 2 of a network. The network device is configured to execute a network device operation system (ndOS), where network devices executing ndOS share a global switch table. The method further includes an operation for blocking ports associated with the loop where incoming packets received at the blocked ports are discarded except for loop-probe packets. Further, the method includes operations for sending loop-probe packets by one or more network devices executing ndOS through one or more ports, and for unblocking a first port of the blocked ports based on the loop-probe packets when a lack of receipt of a loop-probe packet within a predetermined amount of time is detected for the first blocked port which indicates that the first blocked port is not part of the loop.

Abstract: A system for atomic file transfer operations over connectionless network protocols includes a processor and a memory coupled to the processor. The memory contains program instructions executable by the processor to implement an operating system including a system call interface for sending one or more data files to another system over a network via a connectionless network protocol. In response to an invocation of the system call by an application, the operating system is configured to send the one or more data files to the other system over the network without the application copying contents of the data files into application address space.

Abstract: A network switch includes ports, memory, and a processor. The switch is operable to switch packets of a layer 2 network, and the memory is for storing a tunneling engine computer program. The processor executes the tunneling engine, where the processor identifies a second switch operable to switch layer-2 network packets. The identification includes detecting that the second switch is connected to the network switch over a layer 3 connection, and the tunneling engine creates a tunnel over the layer 3 connection between the switches to exchange layer-2 packets. The tunnels encapsulates and decapsulates the packets that are exchanged between the switches. When the processor determines that a packet from a first node to a second node that is connected to the second switch, the processor creates an encapsulation flow on the network switch to encapsulate packets from the first node to the second node over the tunnel.

Abstract: Methods, systems, and computer programs are presented for managing a network in the presence of layer-2 loops. One method includes an operation for detecting, by a network device, a loop at a layer 2 of a network. The network device is configured to execute a network device operation system (ndOS), where network devices executing ndOS share a global switch table. The method further includes an operation for blocking ports associated with the loop where incoming packets received at the blocked ports are discarded except for loop-probe packets. Further, the method includes operations for sending loop-probe packets by one or more network devices executing ndOS through one or more ports, and for unblocking a first port of the blocked ports based on the loop-probe packets when a lack of receipt of a loop-probe packet within a predetermined amount of time is detected for the first blocked port which indicates that the first blocked port is not part of the loop.

Abstract: Systems, methods, and computer programs are presented for managing network traffic. A network switch includes a switch fabric and a resource coherency and analytics engine (RCAE) coupled to the switch fabric. The RCAE includes one or more virtualizable resource groups (VRGs) for managing network traffic flow across a plurality of network switches on the network. Further, the RCAE is operable to add network entities to each VRG, add flows to each VRG, and add other VRGs to each VRG. A virtualizable resource control list (VRCL), associated with each VRG, identifies which network entities in the VRG can communicate with each other, which network entities in the VRG can communicate with network entities in other VRGs, and a guaranteed bandwidth for the VRG associated with the VRCL. Furthermore, the RCAE is operable to exchange messages with other RCAEs in other network switches to implement traffic policies defined by each VRCL.

Abstract: Systems, methods, and computer programs are presented for managing network traffic. A network switch includes a switch fabric and a resource coherency and analytics engine (RCAE) coupled to the switch fabric. The RCAE includes one or more virtualizable resource groups (VRGs) for managing network traffic flow across a plurality of network switches on the network. Further, the RCAE is operable to add network entities to each VRG, add flows to each VRG, and add other VRGs to each VRG. A virtualizable resource control list (VRCL), associated with each VRG, identifies which network entities in the VRG can communicate with each other, which network entities in the VRG can communicate with network entities in other VRGs, and a guaranteed bandwidth for the VRG associated with the VRCL. Furthermore, the RCAE is operable to exchange messages with other RCAEs in other network switches to implement traffic policies defined by each VRCL.

Abstract: Methods, systems, and computer programs are presented for networking communications. One embodiment of a system includes a switch module having one or more ports with a communications interface of a first type and a switch fabric. The system also includes a switch controller that is in communication with the switch module, the switch controller having a first network operating system (ndOS) for controlling packet switching policy in the switch module. The system further includes a server that executes a hypervisor for processing one or more virtual machines. The sever includes a communication interface of the first type for communicating with the switch module, one or more processors, a second ndOS, and one or more virtual network interface cards (VNIC) for communicating with the switch module via the communication interface of the first type.

Abstract: Methods, systems, and computer programs are presented for managing network switching. A network device operating system (ndOS) program includes instructions for exchanging switching policy regarding switching network packets in a plurality of ndOS devices having ndOS programs. The first ndOS program is executed in a first ndOS device, and the switching policy is exchanged with other ndOS programs via multicast messages. Further, the ndOS program includes instructions for exchanging resource control messages with the other ndOS devices to implement service level agreements in the switching fabric, where the ndOS switching devices cooperate to enforce the service level agreements. Further yet, the ndOS program includes instructions for receiving changes to the switching policy, and instructions for propagating the received changes to the switching policy via message exchange between the ndOS programs. The ndOS devices are managed as a single logical switch that spans the plurality of ndOS devices.

Abstract: Systems are presented for processing packets in a network switch. One network device includes a processor, an Ethernet switch, a PCIe switch, and a packet processor. The processor is for executing a controller program, and the Ethernet switch is for switching packets among a ports. Further, the PCIe switch is coupled to the processor and the Ethernet switch, and the packet processor, coupled to the Ethernet switch and the PCIe switch, is operable to modify an application header of an incoming packet and send the incoming packet to one of the ports. The controller program is operable to configure the Ethernet switch and the packet processor to define processing of packets. The controller program is operable to send a first configuration rule to the Ethernet switch, the first configuration rule defining that packets of a network flow requiring header modification be forwarded to the packet processor.

Abstract: Methods, systems, and computer programs are presented for a switching server. One switching server includes a server, a switch module coupled to the server, and a switch controller coupled to the server and to the switch module. The server includes a processor executing an operating system that includes a network driver, and the network driver includes a first network device operating system (ndOS) program. Further, the switch module includes a switch fabric and input/output ports. The switch controller includes a processor and non-volatile storage, where the processor is configured to execute a second ndOS program. The first and second ndOS programs implement a global networking policy for a plurality of devices executing ndOS programs, the global networking policy including a definition for switching incoming packets through the plurality of devices executing the ndOS programs.

Abstract: Methods, systems, and computer programs are presented for networking communications. One method includes an operation for receiving a packet in a first format by a virtual driver providing a communications interface of a first type (CI1), the first format being for CI1. Further, the method includes an operation for encapsulating the packet in a second format by a processor, the second format being for a communications interface of a second type (CI2) different from CI1. In addition, the method includes an operation for sending the encapsulated packet in the second format to a switch module. The switch module includes a switch fabric, one or more CI1 ports, and one or more CI2 ports, and the switch module transforms the packet back to the first format to send the packet in the first format to a CI1 network via one of the CI1 ports in the switch module.

Abstract: One networking device includes a switch module, a server, and a switch controller. The switch module has ports with a communications interface of a first type (CI1) and ports with a communications interface of a second type (CI2). The server, coupled to the switch module via a first CI2 coupling, includes a virtual CI1 driver, which provides a CI1 interface in the server, defined to exchange CI1 packets with the switch module via the first CI2 coupling. The virtual CI1 driver includes a first network device operating system (ndOS) program. The switch controller, in communication with the switch module via a second CI2 coupling, includes a second ndOS program controlling, in the switch module, a packet switching policy defining the switching of packets through the switch module or switch controller. The first and second ndOS programs exchange control messages to maintain a network policy for the switch fabric.

Abstract: Methods, systems, and computer programs are presented for managing network switching. A network device operating system (ndOS) program includes instructions for exchanging switching policy regarding switching network packets in a plurality of ndOS devices having ndOS programs. The first ndOS program is executed in a first ndOS device, and the switching policy is exchanged with other ndOS programs via multicast messages. Further, the ndOS program includes instructions for exchanging resource control messages with the other ndOS devices to implement service level agreements in the switching fabric, where the ndOS switching devices cooperate to enforce the service level agreements. Further yet, the ndOS program includes instructions for receiving changes to the switching policy, and instructions for propagating the received changes to the switching policy via message exchange between the ndOS programs. The ndOS devices are managed as a single logical switch that spans the plurality of ndOS devices.

Abstract: Methods and systems for switching a network packet at a switching device are provided. One method includes operations for receiving a packet having a media access control (MAC) address, and for switching the packet by a switch fabric if the MAC address is present in one or more memories associated with the switch fabric. The method also includes operation for switching the packet by a network device operating system (ndOS) if the MAC address is absent from the one or more memories.

Abstract: One networking device includes a switch module, a server, and a switch controller. The switch module has ports with a communications interface of a first type (CI1) and ports with a communications interface of a second type (CI2). The server, coupled to the switch module via a first CI2 coupling, includes a virtual CI1 driver, which provides a CI1 interface in the server, defined to exchange CI1 packets with the switch module via the first CI2 coupling. The virtual CI1 driver includes a first network device operating system (ndOS) program. The switch controller, in communication with the switch module via a second CI2 coupling, includes a second ndOS program controlling, in the switch module, a packet switching policy defining the switching of packets through the switch module or switch controller. The first and second ndOS programs exchange control messages to maintain a network policy for the switch fabric.