Disclosed herein is technology to reduce latency of frames through a network device supporting various priorities. In an implementation, a method comprises configuring one or more priorities with a preemptive right over other one or more of said plurality of priorities; receiving frames in a sequence, each of the frames having a frame priority comprising of one of said plurality of priorities; queuing the received frames in a predetermined order based on a frame arrival time and the frame priority; transmitting a current frame based on a current frame priority and current frame arrival time; stopping transmission of the current frame when a later frame in the sequence is received that has a later frame priority with preemptive right over the current frame priority; transmitting an invalid frame check sequence; transmitting the later frame; and restarting the transmission of the current frame after transmitting the later frame.

According to an embodiment, a notification control device includes a memory and one or more hardware processors configured to function as a determination unit and a notification unit. The determination unit is configured to determine, using notification control information set according to a priority of a frame, whether to notify of completion notification indicating completion of processing of the frame. The notification unit is configured to notify the completion notification when it is determined to notify of the completion notification.

The technologies described herein are generally directed toward shedding processing loads associated with route updates. According to an embodiment, a system can comprise a processor and a memory that can enable operations facilitating performance of operations including facilitating receiving, from a second routing device via a network, a communication. The operations can further comprise, in response to a queueing delay being determined to be less than a threshold, queueing, in the queue, the communication for a third routing device selected according to a first selection process as being on a route to a destination routing device for the communication. Further, operations to, in response to the queueing delay of the queue being determined to be equal to or above the threshold, transmit the communication to a fourth routing device, with the fourth routing device being selected according to a second selection process different than the first selection process.

A network device adds an extreme low latency (ELL) service packet to an ELL queue, and adds a (time sensitive) TS service packet to a TS queue. A packet in the TS queue is sent within a time window corresponding to the TS queue, and the packet in the TS queue is not allowed to be sent within a time period beyond the time window corresponding to the TS queue. When a remaining time period obtained by subtracting a time period required by a to-be-sent TS service packet within the time window from the time window is greater than or equal to a first threshold, a packet in the ELL queue is allowed to be sent within the time window corresponding to the TS queue. The first threshold is a time period required for sending one or more ELL service packets in the ELL queue.

Systems and methods are provided for scheduling the transmission of CPRI traffic over Ethernet in a datapath. A source node can send a registration request indicating its preferred sending time for data transmission. Intermediate nodes can determine if there are overlaps in timeslot reservations and adjust, and schedule, the requested preferred sending time accordingly.

This application provides a packet processing method and apparatus, to avoid chain impact of an abnormal packet caused by an abnormal underlying latency on an uncertain target flow. The method includes: receiving, by a first device, a first packet sent by a second device, where the first packet carries a first label, and the first label is determined based on a cycle in which the second device sends the first packet; determining, by the first device based on the first label, whether the first packet is a normal packet; if determining that the first packet is a normal packet, determining, by the first device, a second packet based on the first packet, where the second packet carries a second label; and sending, by the first device, the second packet to a third device in a first cycle, where the second label is determined based on the first cycle.

A network device processes received packets at least to determine port or ports of the network device via which to transmit the packet. The network device also classifies the packets into packet flows, the packet flows being further categorized into traffic pattern categories characteristic of traffic pattern characteristics of the packet flows. The network device buffers, according to the traffic pattern categories of the packet flows, packets that belong to the packet flows in a first packet memory or in a second packet memory, the first packet memory having a memory access bandwidth different from a memory access bandwidth of the second packet memory. After processing the packets, the network device retrieves the packets from the first packet memory or the second packet memory in which the packets are buffered, and forwards the packets to the determined one or more ports for transmission of the packets.

A packet processing device includes a first unit, a second unit, and a switching unit. The first unit counts the number of arrived packets in a first period that is from the time slot present after a priority section up to the end of the initial time slot in the subsequently-arriving priority section. When the counted number of arrived packets is positive, the first unit determines that forward mismatch has occurred in an observation cycle. The second unit counts the number of arrived packets in a second period which is from the time slot present immediately after the priority section in the first period of time up to the end of the initial time slot of burst sections in the subsequently-arriving priority section. When the counted number of arrived packets is “0”, the second unit determines that backward mismatch has occurred in the observation cycle.

An integrated circuit (IC) device includes a network device. The network device includes first and second network ports each configured to connect to a network, and an internal endpoint port configured to connect to first endpoint having a first processing unit and second endpoint having a second processing unit. A lookup circuit is configured to provide a first forwarding decision for a first frame to be forwarded to the first endpoint. An endpoint extension circuit is configured to determine a first memory channel based on the first forwarding decision for forwarding the first frame, and forward the first frame to the first endpoint using the determined memory channel.

Example methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to change a time sensitive networking schedule implemented by a softswitch are disclosed. Example apparatus disclosed herein to change a time sensitive networking schedule implemented by a first softswitch on a compute node include a network node configurator to deploy a second softswitch on the compute node based on a first configuration specification associated with the first softswitch, configure the second softswitch to implement an updated time sensitive networking schedule different from the time sensitive networking schedule implemented by the first softswitch, and replace the first softswitch with the second softswitch in response to a determination that a first set of constraints is met for simulated network traffic processed by the second softswitch based on the updated time sensitive networking schedule. Disclosed example apparatus also include a simulator to apply the simulated network traffic to the second softswitch.