Some embodiments provide a method for quantifying quality of several service classes provided by a link between first and second forwarding nodes in a wide area network (WAN). At a first forwarding node, the method computes and stores first and second path quality metric (PQM) values based on packets sent from the second forwarding node for the first and second service classes. The different service classes in some embodiments are associated with different quality of service (QoS) guarantees that the WAN offers to the packets. In some embodiments, the computed PQM value for each service class quantifies the QoS provided to packets processed through the service class. In some embodiments, the first forwarding node adjusts the first and second PQM values as it processes more packets associated with the first and second service classes. The first forwarding node also periodically forwards to the second forwarding node the first and second PQM values that it maintains for the first and second service classes. In some embodiments, the second forwarding node performs a similar set of operations to compute first and second PQM values for packets sent from the first forwarding node for the first and second service classes, and to provide these PQM values to the first forwarding node periodically.

Some embodiments provide a method for quantifying quality of several service classes provided by a link between first and second forwarding nodes in a wide area network (WAN). At a first forwarding node, the method computes and stores first and second path quality metric (PQM) values based on packets sent from the second forwarding node for the first and second service classes. The different service classes in some embodiments are associated with different quality of service (QoS) guarantees that the WAN offers to the packets. In some embodiments, the computed PQM value for each service class quantifies the QoS provided to packets processed through the service class. In some embodiments, the first forwarding node adjusts the first and second PQM values as it processes more packets associated with the first and second service classes. The first forwarding node also periodically forwards to the second forwarding node the first and second PQM values that it maintains for the first and second service classes. In some embodiments, the second forwarding node performs a similar set of operations to compute first and second PQM values for packets sent from the first forwarding node for the first and second service classes, and to provide these PQM values to the first forwarding node periodically.

Technologies for switch link and ply management for variable oversubscription ratios include powering up and down links of one or more network plys according to bandwidth demand, desired oversubscription ratio and/or other parameters. Telemetry data representing one or more network traffic metrics of one or more switch plies is monitored to determine respective power states of the plurality of links associated with the one or more switch plies as a function of a desired oversubscription ratio calculated based on the telemetry data. The respective power state of the plurality of links is set accordingly.

A method and a traffic processing unit (200) for handling traffic in a communication network when the traffic is distributed across a set of traffic processing units. When receiving a packet of a traffic flow distributed to said traffic processing unit, the traffic processing unit (200) assigns a packet class to the received packet, which class can be active or inactive in the traffic processing unit. The traffic processing unit obtains state information of the assigned packet class. If the packet class is detected as active the state information is retrieved from a local storage (200C) in the traffic processing unit, and if the packet class is detected as inactive the state information is fetched from a central storage (204). The traffic processing unit then performs stateful packet processing of the received packet based on the obtained state information.

A method for selecting a transmission of a network device is disclosed. In particular, a method for selecting a transmission of a network device comprising a plurality of queues for storing data frames is disclosed. Here, each of the plurality of queues corresponds to a different traffic class, the method comprising: a step of obtaining information about a transmission selection algorithm for the plurality of queues; and a step of selecting data frames for transmission from a corresponding queue on the basis of transmission selection algorithm information. Here, the transmission selection algorithm may correspond to a strict priority algorithm, a credit-based shaper algorithm, or a burst transmission algorithm.

A multi-endpoint adapter includes endpoints configured to couple to respective processing subsystems, multi-endpoint adapter ports configured to couple to an external switch via respective external switch ports, and an internal switch coupled to the endpoints and multi-endpoint adapter ports. The internal switch receives a data packet from a first application provided by a first processing subsystem through a first endpoint, and matches the data packet to a data flow associated with QoS parameter(s). The internal switch then identifies a data flow action that is associated with the data flow and that provides for the transmission of the data packet via a first multiple endpoint adapter port that is configured in a manner that satisfies the at least one QoS parameter, and performs the data flow action to transmit the data packet through the first multi-endpoint adapter port and a first external switch port to the external switch.

A gateway device for a fire control system is described herein. The gateway device can comprise a processor and a memory having instructions stored thereon which, when executed by the processor, cause the processor to detect that a network interface of the gateway device is connected to a network, receive data associated with the fire control system, and determine a data management scheme for the gateway device based on the type of detected network interface and the received data.

Technologies for quality of service based throttling in a fabric architecture include a network node of a plurality of network nodes interconnected across the fabric architecture via an interconnect fabric. The network node includes a host fabric interface (HFI) configured to facilitate the transmission of data to/from the network node, monitor quality of service levels of resources of the network node used to process and transmit the data, and detect a throttling condition based on a result of the monitored quality of service levels. The HFI is further configured to generate and transmit a throttling message to one or more of the interconnected network nodes in response to having detected a throttling condition. The HFI is additionally configured to receive a throttling message from another of the network nodes and perform a throttling action on one or more of the resources based on the received throttling message. Other embodiments are described herein.

Technologies for quality of service based throttling in a fabric architecture include a network node of a plurality of network nodes interconnected across the fabric architecture via an interconnect fabric. The network node includes a host fabric interface (HFI) configured to facilitate the transmission of data to/from the network node, monitor quality of service levels of resources of the network node used to process and transmit the data, and detect a throttling condition based on a result of the monitored quality of service levels. The HFI is further configured to generate and transmit a throttling message to one or more of the interconnected network nodes in response to having detected a throttling condition. The HFI is additionally configured to receive a throttling message from another of the network nodes and perform a throttling action on one or more of the resources based on the received throttling message. Other embodiments are described herein.

Methods and network interface modules for processing packet headers are provided. The method comprises: receiving a packet comprising a header and a payload; generating, using the header, an initial packet header vector (PHV); providing the initial PHV to a pipeline comprising a plurality of processing stages; and processing the initial PHV in the pipeline, wherein the processing comprises, for a current processing stage in the plurality of processing stages: receiving, by the current processing stage, an input PHV, wherein the input PHV (i) is the initial PHV or a modified version of the initial PHV and (ii) comprises one or more flits, and applying a feature to the input PHV to generate an output PHV, including increasing an initial length of the input PHV if the initial length is not sufficient to apply the feature.