Patent application number | Description | Published |
20110134925 | Switching Apparatus and Method Based on Virtual Interfaces - A network device comprises a plurality of physical ports, and a packet processing pipeline coupled to the plurality of physical ports. The packet processing pipeline is configured to assign a virtual port from a plurality of virtual ports to a packet received via one of the physical ports, wherein a quantity of the plurality of virtual ports is larger than a quantity of the plurality of physical ports, and wherein, for each of at least some of the physical ports, multiple virtual ports correspond to one physical port. The packet processing pipeline is also configured to assign a virtual domain from a plurality of virtual domains to the packet based on the assigned virtual port, and process the packet based on one or more of i) the assigned virtual port, ii) the assigned virtual domain, and iii) a header field of the packet, including determining zero, one, or more physical ports to which the packet is to be forwarded. | 06-09-2011 |
20130209103 | METHOD AND APPARATUS FOR DYNAMICALLY ALLOCATING BANDWIDTH TO A CLIENT IN A PASSIVE OPTICAL NETWORK - Embodiments of the present disclosure provide methods for allocating bandwidth to a plurality of traffic containers of a passive optical network. The method comprises receiving upstream data from a plurality of traffic containers of the passive optical network and passing the upstream data to a traffic manager. The method further comprises dynamically changing the allocated bandwidth based at least in part on the amount of the upstream data stored in one or more queues of the traffic manager. | 08-15-2013 |
20130212670 | Intelligent PHY with security detection for ethernet networks - A physical layer device includes memory, a memory control module, and a physical layer module. The memory control module is configured to control access to the memory. The physical layer module is configured to store packets in the memory via the memory control module. The physical layer module includes an interface configured to receive the packets from a network device via a network and an interface bus. The interface bus includes at least one of a control module and a regular expression module. The at least one of the control module and the regular expression module is configured to inspect the packets to determine a security level of the packets. A network interface is configured to, based on the security level, provide the packets to a device separate from the physical layer device. | 08-15-2013 |
20140119370 | SWITCHING APPARATUS AND METHOD BASED ON VIRTUAL INTERFACES - A network device comprises a plurality of physical ports and a packet processing pipeline. The packet processing pipeline is configured to assign a virtual port from a plurality of virtual ports to a packet received via one of the physical ports, wherein a quantity of the virtual ports is larger than a quantity of the physical ports, and wherein, for each of at least some of the physical ports, multiple virtual ports correspond to one physical port. The packet processing pipeline is also configured to assign a virtual domain from a plurality of virtual domains to the packet based on the assigned virtual port, and process the packet based on one or more of i) the assigned virtual port, ii) the assigned virtual domain, and iii) a header field of the packet, including determining zero, one, or more physical ports to which the packet is to be forwarded. | 05-01-2014 |
20140321467 | Apparatus and Method for Table Search with Centralized Memory Pool in a Network Switch - A network switch includes packet processing units in a first processor core. An interface module is connected to the packet processing units. The interface module supports a unified table search request interface and a unified table search response interface. A common memory pool is connected to the interface module. The common memory pool includes a variety of memory types configurable to support multiple parallel table search requests. | 10-30-2014 |
20140369363 | Apparatus and Method for Uniquely Enumerating Paths in a Parse Tree - A method includes constructing a graph characterizing a set of packet headers associated with network traffic. The graph has a unique identifier for each possible combination of packet headers forming a path in the graph. A received packet is associated with a unique identifier in the graph. Characteristics of the received packet are reconstructed based upon the unique identifier. | 12-18-2014 |
20150186143 | METHOD AND APPARATUS FOR PARALLEL AND CONDITIONAL DATA MANIPULATION IN A SOFTWARE-DEFINED NETWORK PROCESSING ENGINE - Embodiments of the present invention relate to fast and conditional data modification and generation in a software-defined network (SDN) processing engine. Modification of multiple inputs and generation of multiple outputs can be performed in parallel. A size of each input or output data can be large, such as in hundreds of bytes. The processing engine includes a control path and a data path. The control path generates instructions for modifying inputs and generating new outputs. The data path executes all instructions produced by the control path. The processing engine is typically programmable such that conditions and rules for data modification and generation can be reconfigured depending on network features and protocols supported by the processing engine. The SDN processing engine allows for processing multiple large-size data flows and is efficient in manipulating such data. The SDN processing engine achieves full throughput with multiple back-to-back input and output data flows. | 07-02-2015 |
20150186516 | APPARATUS AND METHOD OF GENERATING LOOKUPS AND MAKING DECISIONS FOR PACKET MODIFYING AND FORWARDING IN A SOFTWARE-DEFINED NETWORK ENGINE - Embodiments of the present invention relate to a Lookup and Decision Engine (LDE) for generating lookup keys for input tokens and modifying the input tokens based on contents of lookup results. The input tokens are parsed from network packet headers by a Parser, and the tokens are then modified by the LDE. The modified tokens guide how corresponding network packets will be modified or forwarded by other components in a software-defined networking (SDN) system. The design of the LDE is highly flexible and protocol independent. Conditions and rules for generating lookup keys and for modifying tokens are fully programmable such that the LDE can perform a wide variety of reconfigurable network features and protocols in the SDN system. | 07-02-2015 |
20150187419 | METHOD AND SYSTEM FOR RECONFIGURABLE PARALLEL LOOKUPS USING MULTIPLE SHARED MEMORIES - Embodiments of the present invention relate to multiple parallel lookups using a pool of shared memories by proper configuration of interconnection networks. The number of shared memories reserved for each lookup is reconfigurable based on the memory capacity needed by that lookup. The shared memories are grouped into homogeneous tiles. Each lookup is allocated a set of tiles based on the memory capacity needed by that lookup. The tiles allocated for each lookup do not overlap with other lookups such that all lookups can be performed in parallel without collision. Each lookup is reconfigurable to be either hash-based or direct-access. The interconnection networks are programmed based on how the tiles are allocated for each lookup. | 07-02-2015 |
20150188848 | MATRIX OF ON-CHIP ROUTERS INTERCONNECTING A PLURALITY OF PROCESSING ENGINES AND A METHOD OF ROUTING USING THEREOF - Embodiments of the present invention relate to a scalable interconnection scheme of multiple processing engines on a single chip using on-chip configurable routers. The interconnection scheme supports unicast and multicast routing of data packets communicated by the processing engines. Each on-chip configurable router includes routing tables that are programmable by software, and is configured to correctly deliver incoming data packets to its output ports in a fair and deadlock-free manner. In particular, each output port of the on-chip configurable routers includes an output port arbiter to avoid deadlocks when there are contentions at output ports of the on-chip configurable routers and to guarantee fairness in delivery among transferred data packets. | 07-02-2015 |