A physical-layer circuit including a memory, a physical-layer device and a control circuit. The memory receives data from a media access controller (MAC) at a first rate. The MAC is separate from the physical-layer circuit. The physical-layer device receives the data from the memory and transmits the data from the physical-layer circuit to a peer device. The physical-layer device transfers the data from the memory to the peer device at a second rate. An amount of data stored in the memory is based on a difference between the first and second rates. The second rate is less than the first rate. The control circuit is connected between the memory and the physical layer device. The control circuit monitors the amount of the data stored in the memory and, based on the amount of the data stored in the memory, transmits a frame to the MAC to decrease the first rate.

Disclosed is a .[.UGMII.]. system to interface multirate devices including 10 gigabit per second data exchange rates. Mode selection is enabled to provide for automatic detection and adaptation to any transmit rate including 10M, 100M, 1G, and 10G. Mode selection comprises the negotiation between the UGMII extension sublayers located at the MAC and PHY to select between one of several operational modes including: XGMII communication, GMII encapsulation, Clause 22 MDIO register management and Clause 45 MDIO register management. Selection of UGMII and XGMII operating modes are negotiated between the MAC and PHY using ordered sets to announce and acknowledgement a mode change. In one embodiment 802.3 Clause 46 defined ordered sets are utilized.

A hardware-implemented rate limiter is described. This implementation guarantees that messages containing a value v are not forwarded at a higher rate than a predefined threshold value r. More specifically, given a number of times x in a time interval y, which specifies a rate r defined by x/y, the rate limiter reports a violation by selectively setting an error value when v occurs more than x times during the time interval y. Moreover, the rate limiter may be able to keep track of multiple predefined threshold values for different rates. Furthermore, the rate limiter may keep track of 2.sup.b different values v, where b is the number of digits of the binary representation of v.

A configuration in which a device server is connected to a client and is also locally connected to a USB device suppresses data transfer volume fluctuation due to network delay, maintains the data transferring volume at a value guaranteed by the isochronous output transfer and improves network robustness under the isochronous output transfer process. The device server includes a data buffer portion for the isochronous output transfer data and performs advance reading of the isochronous output transfer data after sending back a transfer completion response unconditionally to the client upon receiving an isochronous output transfer request from the client. When the retention data volume in the data buffer portion reaches the upper limit threshold, the transfer data buffered in the data buffer portion is transferred to the device over the isochronous output transfer.

Among other things, flow rates of traffic among endpoints in a network are controlled. Notifications are received about flowlets originating or received at the endpoints. Each of the flowlets includes one or more packets that are in a queue associated with a corresponding flowlet. In response to the received notifications, updated flow rates are computed for the flowlets. The updated flow rates are sent to devices for use in controlling flow rates for the flowlets in accordance with the computed updated flow rates. Also, rates of flow at endpoints of a network are controlled. A device in the network sends notification of a start or end of a flowlet at an endpoint of the network. The notification is sent to an allocator to which other devices send notifications with respect to other flowlets. At the device, a communication rate is received from the allocator. The rate is one of a set of communication rates for flowlets starting and ending at endpoints of the network. The device controls a rate of communication on a link of the network based on the received communication rate. Also, network resources are allocated to devices at endpoints of a network. A modified Newton like process is applied to optimize current flow rates at respective devices based on information about flowlets starting or ending at the devices, the capacities of links of the network, and information about the paths of the flowlets through the network.

A distributed storage system that includes memory hosts. Each memory host includes non-transitory memory and a network interface controller in communication with the memory and servicing remote direct memory access requests from clients. The memory receives a data transfer rate from each client in communication with the memory host through remote direct memory access. Each memory host also includes a data processor in communication with the memory and the network interface controller. The data processor executes a host process that reads each received client data transfer rate, determines a throttle data transfer rate for each client, and writes each throttle data transfer rate to non-transitory memory accessible by the clients through remote direct memory access.

A wireless end-user device, comprising one or more modems enabling the wireless end-user device to communicate with a network system over a wireless access network, a touch-screen user interface, and one or more processors configured to execute one or more instructions that, when executed by the one or more processors, cause the one or more processors to detect a user input through the touch-screen user interface, the user input comprising a request to remove the wireless end-user device from an existing device group account, the existing device group account being associated with one or more devices including the wireless end-user device, and send a message to the network system over the wireless access network, the message conveying the request to remove the wireless end-user device from the existing device group account.

Systems, methods, and computer programs are presented for managing network traffic. A network switch includes a switch fabric and a resource coherency and analytics engine (RCAE) coupled to the switch fabric. The RCAE includes one or more virtualizable resource groups (VRGs) for managing network traffic flow across a plurality of network switches on the network. Further, the RCAE is operable to add network entities to each VRG, add flows to each VRG, and add other VRGs to each VRG. A virtualizable resource control list (VRCL), associated with each VRG, identifies which network entities in the VRG can communicate with each other, which network entities in the VRG can communicate with network entities in other VRGs, and a guaranteed bandwidth for the VRG associated with the VRCL. Furthermore, the RCAE is operable to exchange messages with other RCAEs in other network switches to implement traffic policies defined by each VRCL.

A method for shaping traffic across a wide area network is disclosed. The method involves advertising a data rate limit across a wide area network (WAN) from a first node, measuring the rate of data received at a WAN interface of the first node, and, if the measured rate of data received at the WAN interface of the first node exceeds a maximum threshold, advertising a reduced data rate limit across the WAN, and, if the measured rate of data received at the WAN interface of the first node is below a minimum threshold, advertising an increased data rate limit across the WAN.

One embodiment of the present invention, in a method for enabling a station (STA) to perform an access to a medium in a wireless communication system, is a method for performing an access, comprising the steps of: receiving a frame including an RPS element; checking a restricted access window (RAW) assignment field within the RPS element; and performing an access on the basis of a RAW start time when the STA corresponds to a RAW group related to the RAW assignment field, wherein the RAW start time is obtained on the basis of a start time indication sub field, and the start time indication sub field indicates whether the RAW start time sub field indicating the RAW start time is included in the RAW assignment field.