公开(公告)号：US09830403B2

公开(公告)日：2017-11-28

申请号：US14579132

申请日：2014-12-22

Applicant: ALAXALA Networks Corporation

Inventor： Shinichi Akahane ,  Kazuo Sugai ,  Tomohiko Kouno ,  Takao Nara

IPC: G06F11/00 ,  G06F17/30 ,  G11C15/00 ,  G11C29/56 ,  G11C29/04

CPC classification number: G06F17/30982 ,  G11C15/00 ,  G11C29/56008 ,  G11C2029/0401

Abstract: A communication apparatus comprises a CAM, an action determination unit, and a CAM diagnosis unit. The CAM includes, a plurality of entries each storing therein at least a portion of header information of frame, and a search circuit for each entry configured to determine whether or not a search key matches data stored at the entry. The search key is correlated with information indicating whether or not an entry matching the search key and an expected value of a search result including identification information of an entry matching the search key. The CAM diagnosis unit causes the CAM to search for an entry matching the search key. The CAM diagnosis unit diagnoses a failure occurring at the search circuit of an entry to be the test object when the result of the search does not match the expected value of a search result correlated to the search key.

公开(公告)号：US09641437B2

公开(公告)日：2017-05-02

申请号：US14450552

申请日：2014-08-04

Applicant: ALAXALA Networks Corporation

Inventor： Yuichi Ishikawa ,  Takao Nara

IPC: H04L12/743 ,  H04L12/721 ,  H04L12/851

CPC classification number: H04L45/7457 ,  H04L45/38 ,  H04L47/2441

Abstract: A packet relay device has a packet receiving unit, a switch, a packet sending unit, an associative memory, and a packet search unit. The packet search unit has action registers which hold information specifying an action to be executed, holds address range information including consecutive address ranges of the associative memory and the action registers in association with each other, and registers a plurality of flow entries at a plurality of addresses in the same address range. The flow entries have conditions identifying the flows associated with the same action. The device inputs header information of the packets into the associative memory, determines the action to be executed in accordance with information read out from the action register corresponding to the address range including an address output from the associative memory, and executes the determined action.

公开(公告)号：US09276876B2

公开(公告)日：2016-03-01

申请号：US14096439

申请日：2013-12-04

Applicant: ALAXALA Networks Corporation

Inventor： Yasuhiro Kodama ,  Shinichi Akahane ,  Kazuo Sugai ,  Takao Nara

IPC: G06F15/167 ,  H04L12/933 ,  H04L12/741

CPC classification number: H04L49/10 ,  H04L45/745

Abstract: A data transfer apparatus includes a first memory, a second memory, a search unit, and a data transmitting/receiving unit. The first memory holds information that associates a search key with an address. The second memory holds information that associates the address with verification information which is generated by a predetermined generation method based on at least a portion of the search key. The search unit generates the search key based on the received data, obtains, from the first memory, the address that is associated with the generated search key, obtains, from the second memory, the verification information that is associated with the obtained address, and verifies the verification information that is generated by the predetermined generation method based on at least a portion of the generated search key with the verification information obtained from the second memory. The data transmitting/receiving unit executes processing based on a result of the verification.

Abstract translation: 数据传送装置包括第一存储器，第二存储器，搜索单元和数据发送/接收单元。 第一个存储器保存将搜索关键字与地址相关联的信息。 第二存储器保存将地址与基于搜索关键字的至少一部分的预定生成方法生成的验证信息相关联的信息。 搜索单元基于接收到的数据生成搜索关键字，从第一存储器获取与生成的搜索关键字相关联的地址，从第二存储器获得与获得的地址相关联的验证信息，以及 基于从第二存储器获得的验证信息，基于生成的搜索关键字的至少一部分来验证由预定生成方法生成的验证信息。 数据发送/接收单元基于验证结果执行处理。

公开(公告)号：US09356864B2

公开(公告)日：2016-05-31

申请号：US14262831

申请日：2014-04-28

Applicant: ALAXALA Networks Corporation

Inventor： Kentaro Sugawara ,  Yuichi Ishikawa ,  Yutaka Takagi ,  Takao Nara

IPC: H04L12/54 ,  H04L12/741 ,  H04L12/743

CPC classification number: H04L45/745 ,  H04L45/7457

Abstract: It is provided a packet transfer apparatus comprising: a packet reception part; a packet transmission part; a packet generation part for generating an own-apparatus-originated packet serving as a packet for instructing a predetermined operation and outputting the own-apparatus-originated packet; a packet search part for determining a content of flow control and searching for an output circuit; a search memory for storing the content of the flow control and information for identifying the output circuit outputting the packet; and a packet transfer processing part. The packet reception part determines whether the received packet is the own-apparatus-originated packet; and outputs a self-origination flag indicating a result of the determining and header information of the received packet to the packet search part. The packet search part determines the content of the flow control for the received packet by referring to the search memory based on the self-origination flag and the header information.

Abstract translation: 提供了一种分组传送装置，包括：分组接收部分; 分组传输部分; 分组生成部，其生成用作指示预定操作的分组的自身装置发起的分组，并输出自身装置发起的分组; 分组搜索部分，用于确定流量控制的内容并搜索输出电路; 用于存储流量控制的内容的搜索存储器和用于识别输出分组的输出电路的信息; 和分组传送处理部分。 分组接收部确定接收到的分组是否是自身装置发起的分组; 并且向分组搜索部分输出指示所确定的结果的自发标志和接收到的分组的报头信息。 分组搜索部分基于自发起始标志和头信息，通过参考搜索存储器来确定接收到的分组的流控制的内容。