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公开(公告)号:US20070268885A1
公开(公告)日:2007-11-22
申请号:US11435261
申请日:2006-05-16
申请人: Barry Ford , Steve Benson , Bernard St-Denis
发明人: Barry Ford , Steve Benson , Bernard St-Denis
IPC分类号: H04L12/28
摘要: A method and system for data packet forwarding is provided. A forwarding information base is stored. The forwarding information base has a first stage with a first lookup key and a second stage with a second lookup key. The first lookup key is a portion of the second lookup key. The first stage is evaluated using the first lookup key forwarding the data packet is forwarded if the first stage evaluation yields a forwarding result. If the first stage evaluation does not yield a forwarding result, the second stage is evaluated using the second lookup key to determine a forwarding result. Such a method and system are suitable for use, among other places, in a network processing unit (“NPU”) in an IPv6 network.
摘要翻译: 提供了一种用于数据包转发的方法和系统。 存储转发信息库。 转发信息库具有具有第一查找密钥的第一阶段和具有第二查找密钥的第二阶段。 第一查找键是第二查找键的一部分。 如果第一阶段评估产生转发结果,则使用第一查找密钥转发数据分组来转发第一阶段。 如果第一阶段评估不产生转发结果,则使用第二查找密钥来评估第二阶段以确定转发结果。 这样的方法和系统在IPv6网络中适用于网络处理单元(“NPU”)中。