公开(公告)号：US20150242534A1

公开(公告)日：2015-08-27

申请号：US14579132

申请日：2014-12-22

Applicant: ALAXALA Networks Corporation

Inventor： Shinichi AKAHANE ,  Kazuo SUGAI ,  Tomohiko KOUNO ,  Takao NARA

IPC: G06F17/30

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.

Abstract translation: 通信装置包括CAM，动作确定单元和CAM诊断单元。 CAM包括：多个条目，其中存储有帧的标题信息的至少一部分，以及用于每个条目的搜索电路，用于确定搜索关键字是否匹配存储在该条目中的数据。 搜索关键字与指示匹配搜索关键字的条目和包括与搜索关键字匹配的条目的识别信息的搜索结果的期望值的信息相关联。 CAM诊断单元使CAM搜索与搜索关键字匹配的条目。 当搜索结果与搜索关键字相关的搜索结果的期望值不匹配时，CAM诊断单元诊断出现在作为测试对象的条目的搜索电路处的故障。