Example packet control methods and apparatus are described. One example method includes detecting a packet flow causing a congestion status change. A congestion isolation message is generated and is used to change a priority of a packet in the packet flow. The congestion isolation message includes description information of the packet flow. The congestion isolation message is sent to at least one node.

This disclosure relates to the field of data communication, and provides a network congestion notification method, an agent node, and a computer device. When receiving a first data packet, an agent node adds a source queue pair number to a first data packet to obtain a second data packet, and sends the second data packet to a receive end by using a network node. In a process of forwarding the second data packet, if the network node detects network congestion, the network node generates a first congestion notification packet carrying the source queue pair number, and sends the first congestion notification packet to the agent node. Further, the agent node sends the first congestion notification packet to a transmit end, so that the transmit end decreases a sending rate of a data flow to which the first data packet belongs.

A network device organizes packets into various queues, in which the packets await processing. Queue management logic tracks how long certain packet(s), such as a designated marker packet, remain in a queue. Based thereon, the logic produces a measure of delay for the queue, referred to herein as the queue delay. Based on a comparison of the current queue delay to one or more thresholds, various associated delay-based actions may be performed, such as tagging and/or dropping packets departing from the queue, or preventing addition enqueues to the queue. In an embodiment, a queue may be expired based on the queue delay, and all packets dropped. In other embodiments, when a packet is dropped prior to enqueue into an assigned queue, copies of some or all of the packets already within the queue at the time the packet was dropped may be forwarded to a visibility component for analysis.

An adaptive hybrid control method and apparatus are provided for performing active queue management in a data packet routing device which adaptively combines fuzzy controller logic, alone or in combination with RBF-PID control logic, to provide improved management of network congestion by applying a nonlinear model for buffer utilization to at least a buffer size measure for the target buffer to generate at least a fuzzy membership function adjustment signal, and then supplying the fuzzy membership function adjustment signal to a first controller to automatically tune membership function parameters of the first controller, where the first controller calculates a first packet select probability value for the data packet based at least partly on the fuzzy membership function adjustment signal and an error measure between the buffer size setpoint and the buffer size measure.

The present technology is directed to a system and method for using cloud based processing to co-locate one or more tunnel end points, associated with mobile user generated traffic traversing a Core network, with the serving machine located on application provider network. The describe system/method involves early stage identification of traffic flow (i.e., at the Packet Data network Gateway device using Application Detection and Control function) and dynamically instantiating an end point for the aforementioned traffic flow at the server where the application request is being served. The traffic is then directly tunneled to the endpoint thus avoiding decapsulated mobile traffic from traversing across provider network.

A method is described that includes receiving at a network element a transmission control protocol (TCP) packet with TCP options set on a link between a controller and a destination node. If the network element comprises a transit node, the method includes comparing a bandwidth value indicated in a TCP options field of the received TCP packet with an outgoing link bandwidth of the network element. If the bandwidth value indicated in the TCP options field is greater than the outgoing link bandwidth of the network element, the method includes updating the bandwidth value in the TCP options field to be equal to the outgoing link bandwidth of the network element, and forwarding the packet to a next network element. If the bandwidth value indicated in the TCP options field is not greater than the outgoing link bandwidth, the bandwidth value in the TCP options field is not changed.

Novel solutions to provide enhanced configurability of network access. Such solutions can provide, inter alia, enhanced utilization of network resources (including without limitation network aggregation devices, such as DSLAMs and the like). In an aspect of some solutions, a network aggregation device can divide an aggregate uplink bandwidth into a plurality of time slots. Some or all of the time slots can be reserved for different customers (subscribers). In another aspect of some embodiments, the time slots can be allocated in such a way as to simulate oversubscription of the aggregate uplink bandwidth.

The present technology is directed to a system and method for using cloud based processing to co-locate one or more tunnel end points, associated with mobile user generated traffic traversing a Core network, with the serving machine located on application provider network. The describe system/method involves early stage identification of traffic flow (i.e., at the Packet Data network Gateway device using Application Detection and Control function) and dynamically instantiating an end point for the aforementioned traffic flow at the server where the application request is being served. The traffic is then directly tunneled to the endpoint thus avoiding decapsulated mobile traffic from traversing across provider network.

Described embodiments improve the performance of a computer network via selectively forwarding packets to bypass quality of service (QoS) processing, avoiding processing delays during critical periods of high demand, increasing throughput and efficiency may be increased by sacrificing a small amount of QoS accuracy. QoS processing may be applied to a subset of packets of a flow or connection, referred to herein as lazy processing or lazy byte batching. Packets that bypass QoS processing may be immediately forwarded with the same QoS settings as packets of the flow for which QoS processing is applied, resulting in tremendous overhead savings with only minimal decline in accuracy.

Examples described herein relate to a router interface device. In some examples, the router includes an interface and circuitry. In some examples, the circuitry is to: proactively drop a packet and send a negative acknowledgement (NACK) message to a sender based on lack of buffer space for a response associated with the packet and sent from a downstream network interface device that received the packet and also based on one or more of: congestion at a downstream switch or congestion at an endpoint receiver.