A method for interrupting a packet storm in a server is implemented by a baseboard management controller (BMC) included in the server and includes the steps of: assigning a setting value included in firmware of the BMC to a first value so as to enable receipt of specific packets from a network, the specific packets being transmitted using a specific routing scheme; determining whether a packet storm has occurred according to a number of the specific packets that are received; and assigning the setting value to a second value so as to disable receipt of the specific packets when it is determined that the packet storm has occurred.

A logic circuit for managing reception of secure data packets in an industrial controller snoops data being transferred by a Media Access Controller (MAC) between a network port and a shared memory location within the industrial controller. The logic circuit is configured to perform authentication and/or decryption on the data packet as the data packet is being transferred between the port and the shared memory location. The logic circuit performs authentication as the data is being transferred and completes authentication shortly after the MAC has completed transferring the data to the shared memory. The logic circuit coordinates operation with the MAC and signals a Software Packet Processing (SPP) module when authentication is complete. The logic circuit is further configured to decrypt the data packet, if necessary, and to similarly coordinate operation with the MAC and delay signaling the SPP module that data is ready until decryption is complete.

In one embodiment, an input/output port includes a stateful transmit port having: a history storage to store a value corresponding to a transmit on change field of a prior data packet; a comparator to compare a transmit on change field of the data packet to the value stored in the history storage; and a selection circuit to output the data packet without the transmit on change field when the transmit on change field of the data packet matches the value. Other embodiments are described and claimed.

Multiple ports of a network device are muxed together to form a single packed ingress interface into a buffer. A multiplexor alternates between the ports in alternating input clock cycles. Extra logic and wiring to provide a separate writer for each port is avoided, since the packed interface and buffer writers operate at higher speeds and/or have more bandwidth than the ports, and are thus able to handle incoming data for all of the ports coupled to the packed ingress interface. A packed ingress interface may also or instead support receiving data for multiple data units (e.g. multiple packets) from a single port in a single clock cycle, thereby reducing the potential to waste bandwidth at the end of data units. The interface may send the ending segments of the first data unit to the buffer. However, the interface may hold back the starting segments of the second data unit in a cache. In an embodiment, a gear shift merges the first part of each subsequent portion of the second data unit with the cached data to form a full-sized data unit portion to send downstream, while the second part of the portion replaces the cached data. When the end of the second data unit is detected, if any segments of the second data unit remain after the merger process, the remainder is sent downstream as a separate portion at the same time.

Some embodiments provide a forwarding element that detects and handles elephant flows. In detecting, the forwarding element of some embodiments monitors statistics or measurements relating to a data flow. In handling, the forwarding element marks each packet associated with a detected elephant flow in some manner to differentiate it from a packet associated with a mouse flow. Alternatively, the forwarding element of break elephant flows into a number mouse flow by facilitating in sending packets associated with the detected elephant flow along different paths.

In one embodiment, a method includes: receiving, in an edge platform, a plurality of messages from a plurality of edge devices coupled to the edge platform, the plurality of messages comprising metadata including priority information and granularity information; extracting at least the priority information from the plurality of messages; storing the plurality of messages in entries of a pending request queue according to the priority information; selecting a first message stored in the pending request queue for delivery to a destination circuit; and sending a message header for the first message to the destination circuit via at least one interface circuit, the message header including the priority information, and thereafter sending a plurality of packets including payload information of the first message to the destination circuit via the at least one interface circuit. Other embodiments are described and claimed.

A network switch and associated method of operation for establishing a low latency transmission path through the network which bypasses the packet queue and scheduler of the switch fabric. The network switch transmits each of a plurality of data packets to the identified destination egress port over the low latency transmission if the data packet is identified to be transmitted over the low latency transmission path from the ingress port to the destination egress port, and transmits the data packet to the destination egress port through the packet queue and scheduler if the data packet is not identified to be transmitted over the low latency transmission path from the ingress port to the destination egress ports.

A packet filtering system uses linked zero-based binary search trees to filter received packets. The binary search trees may be generated from filter conditions defining filter parameters for filtering packets.

Systems and methods are provided for managing a data communication within a multi-level network having a plurality of switches organized as groups, with each group coupled to all other groups via global links, including: at each switch within the network, maintaining a global fault table identifying the links which lead only to faulty global paths, and when the data communication is received at a port of a switch, determine a destination for the data communication and, route the communication across the network using the global fault table to avoid selecting a port within the switch that would result in the communication arriving at a point in the network where its only path forward is across a global link that is faulty; wherein the global fault table is used for both a global minimal routing methodology and a global non-minimal routing methodology.

A data rate management system that provides quality of service at the fine granularity of applications in the home network and home automation environment is provided. An application can be associated with a dynamic traffic flow, a physical port, a logical interface, or a host computer or device. Virtual queueing is applied to isolate and protect individual applications. Comprehensive rate management algorithms are developed to offer the bandwidth guarantee for the applications individually. The data rate management system includes a traffic classifier, virtual queueing, and a rate manager. The traffic classifier can statically or dynamically identify an application. The identified application is stored in a dedicated virtual queue. The rate manager schedules the packet transmission among virtual queues using the application-based traffic profiles.