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2. 发明申请

WO2015177635A1 CONDITIONAL ACTION FOLLOWING TCAM FILTERS 审中-公开
标题翻译：关于TCAM过滤器的条件行为
公开(公告)号：WO2015177635A1
公开(公告)日：2015-11-26
申请号：PCT/IB2015/001051
申请日：2015-04-21
申请人： ALCATEL LUCENT
发明人： DOLGANOW, Andrew , FRENCH, Mark
IPC分类号： H04L12/741 , H04L29/06
CPC分类号： H04L47/125 , H04L45/00 , H04L45/7457 , H04L69/22
摘要： A method for providing a conditional action following TCAM lookup is disclosed. The method for providing a conditional action following TCAM lookup includes obtaining (204) data; generating (206) a lookup key from the data; performing (208) a TCAM lookup using the key; and in the event the TCAM lookup generates a match, then performing (211) a test to determine if there is exists a condition associated with the action associated with that match, and in the event the there is a condition, evaluating (213) said condition associated with the action of that match entry; and in the event that said condition is satisfied, then performing (217) a conditional action. The data may be obtained from a communications packet header, as for example in cases of Deep Packet Inspection processing wherein portions of payload contents may be used. The condition evaluation may be one of packet length or Time to Live (TTL) value, and the action taken may be one of dropping or forwarding a communications packet. The method for providing a conditional action following TCAM lookup is particularly useful for reducing the quantity of entries in a TCAM of TCAM filters known in the art.
摘要翻译：公开了一种用于提供TCAM查找之后的条件动作的方法。用于提供TCAM查找之后的条件动作的方法包括获得（204）数据; 从数据生成（206）查找密钥; 使用该密钥执行（208）TCAM查找; 并且在TCAM查找生成匹配的情况下，然后执行（211）测试以确定是否存在与与该匹配相关联的动作相关联的条件，并且在存在条件的情况下，评估（213）所述与该匹配条目的动作相关联的条件; 并且在满足所述条件的情况下，则执行（217）条件动作。数据可以从通信分组报头获得，例如在深度分组检测处理的情况下，其中可以使用有效载荷内容的部分。条件评估可以是分组长度或生存时间（TTL）值之一，并且采取的动作可以是丢弃或转发通信分组之一。用于提供TCAM查找之后的条件动作的方法对于减少本领域已知的TCAM滤波器的TCAM中的条目数量是特别有用的。

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