Embodiments of the present invention provide a cluster that includes a first node and a second node, and the first node and the second node are configured to cooperatively perform a forwarding service on a first packet, where the first node is configured to receive the first packet by using an inbound interface and determine the inbound interface; and the second node is configured to determine an outbound interface according to a forwarding table corresponding to the forwarding service and forward the first packet by using the outbound interface of the second node. In addition, the embodiments of the present invention further provide other clusters and forwarding methods. The foregoing technical solutions help to reduce software and hardware resources occupied by a cluster.

The present disclosure describes techniques for hardware acceleration for routing programs. In some aspects communications between a routing determination program and a packet router are monitored in a router, both the routing determination program and the packet router being part of a software layer of the router. The communications include the routing determination program providing configuration data to the packet router. Based on the monitored communications, a packet processor is changed to reflect the configuration data, the packet processor being part of a hardware layer of the router. The packet processor performs packet routing operations of receiving packets, determining the next routers in the paths to the target destinations of the packets, and sending the packets to the next routers independent of the software layer.

There is provided a communication status measurement device wirelessly connected to a public network and communicating with a server connected to the public network through a communication channel determined in advance. A measurement unit repeatedly measures a time since a dummy packet is transmitted to the server until an acknowledgement packet corresponding to the dummy packet is received. A pattern calculation unit calculates a pattern obtained by removing a component at frequencies more than a first frequency from a pattern of variations in a measured value. An RTT acquisition unit that acquires a round trip time, which is used to calculate an actual bandwidth of the communication channel, on a basis of the calculated pattern. An implementation unit implements a virtual private network in the communication status measurement device itself. The dummy packet is transmitted and the acknowledgement packet is received via the virtual private network and the public network.

Aspects of the disclosure provide a method for collecting distributed counter values in a packet-switched system having multiple distributed packet processors. The method includes receiving a probe packet at a packet processor, storing a counter value corresponding to a flow processed by the packet processor for subsequent delivery to a management controller, and forwarding the probe packet to a next packet processor. The next packet processor stores a counter value of the next packet processor for subsequent delivery to the management controller.

Technologies for distributed table lookup via a distributed router includes an ingress computing node, an intermediate computing node, and an egress computing node. Each computing node of the distributed router includes a forwarding table to store a different set of network routing entries obtained from a routing table of the distributed router. The ingress computing node generates a hash key based on the destination address included in a received network packet. The hash key identifies the intermediate computing node of the distributed router that stores the forwarding table that includes a network routing entry corresponding to the destination address. The ingress computing node forwards the received network packet to the intermediate computing node for routing. The intermediate computing node receives the forwarded network packet, determines a destination address of the network packet, and determines the egress computing node for transmission of the network packet from the distributed router.

The present disclosure provides for methods, network devices, and computer readable storage media for packet reordering. In one embodiment, a method includes receiving a first packet of a first flow at a network device and determining whether flow-identifying information extracted from the first packet matches an existing flow entry. The method also includes, in response to a determination that the flow-identifying information does not match any existing flow entries, generating a new transient flow entry that includes the flow-identifying information and packet-in state. The method also includes forwarding the first packet to a controller via a packet-in stream.

A method and apparatus are provided in which network traffic is separated based on application, query, or other criteria. A first application is stored in a first control group in a resource isolation environment, the first control group being associated with a first policy. A second application is stored in a second control group in the resource isolation environment, the second control group being associated with a second policy. Upon receiving a request for content through one of the first application and the second application, it is determined which control group is associated with the request. Traffic is managed in connection with the request according to the policy associated with the determined control group.

Devices and techniques for hardware accelerated packet processing are described herein. A device can communicate with one or more hardware switches. The device can detect characteristics of a plurality of packet streams. The device may distribute the plurality of packet streams between the one or more hardware switches and software data plane components based on the detected characteristics of the plurality of packet streams, such that at least one packet stream is designated to be processed by the one or more hardware switches. Other embodiments are also described.

Embodiments include technologies for identifying an equivalence class identifier in a packet received by a node configured to perform information centric networking (ICN) in an ICN network, where the packet includes a name identifying content associated with a producer node in the ICN network. Embodiments also include determining an equivalence class for the packet by determining a name prefix of the name based, at least in part, on the equivalence class identifier. Embodiments further include taking an action affecting a particular packet, the action based, at least in part, on the equivalence class. In specific embodiments, the name includes a plurality of name components, and the equivalence class identifier is a count indicating a number of name components in the name to be grouped together to determine the name prefix. In further embodiments, the number is greater than a particular number of name components in a routable name prefix.

Examples disclosed herein relate to matching a packet field in OpenFlow. In an example, an SDN controller may define a custom match field in a flow table entry of an OpenFlow table in a network switch. The network switch may use the custom match field to match against a packet field in a received packet.