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1. 发明授权

US07974284B2 Single and double tagging schemes for packet processing in a network device 有权
标题翻译：用于网络设备中的数据包处理的单标签和双标签方案
公开(公告)号：US07974284B2
公开(公告)日：2011-07-05
申请号：US10874550
申请日：2004-06-24
申请人： Yih-Chuan S. Chen , Jeff Dull
发明人： Yih-Chuan S. Chen , Jeff Dull
IPC分类号： H04L12/28 , H04L12/56 , H04J3/16
CPC分类号： H04L12/66 , H04L45/50 , H04L45/7457
摘要： A method of handling datagrams in a network device is disclosed. The method includes the steps of receiving an incoming datagram at a port of the network device, determining a type for the incoming datagram based on fields in the incoming datagram and a destination address, adding a tag to the datagram to assist in routing the datagram, obtaining a multiprotocol label switching (MPLS) label when the datagram is a MPLS datagram, processing the datagram based on the MPLS label and the destination address and discarding or forwarding the datagram based upon the processing step. The tag is stripped from the datagram before it is sent from an egress port of the network switch.
摘要翻译：公开了一种在网络设备中处理数据报的方法。该方法包括以下步骤：在网络设备的端口处接收输入数据报，基于传入数据报中的字段和目的地地址确定输入数据报的类型，向数据报添加标签以协助路由数据报，当数据报是MPLS数据报时，获得多协议标签交换（MPLS）标签，根据MPLS标签和目的地址处理数据报，并根据处理步骤丢弃或转发数据报。在从网络交换机的出口端口发送标签之前，该标签被从数据报中删除。

2. 发明授权

US07697432B2 Equal and weighted cost multipath load balancing in a network device 失效
标题翻译：网络设备中的均衡和加权成本多径负载均衡
公开(公告)号：US07697432B2
公开(公告)日：2010-04-13
申请号：US10874574
申请日：2004-06-24
申请人： Song-huo Yu , Yih-Chuan S. Chen , Jeff Dull
发明人： Song-huo Yu , Yih-Chuan S. Chen , Jeff Dull
IPC分类号： G08C15/02 , H04L12/56 , G06F15/173 , G06F15/16
CPC分类号： H04L45/00 , H04L45/7457
摘要： A method of mediating the flow of datagrams to a destination in a network is disclosed. The method includes the steps of receiving a datagram at a port of a network device, evaluating a destination address for the datagram based on fields in the incoming packet, searching a longest prefix match (LPM) table using the destination address as a LPM key, determining an address table index and an offset based on entries found in the search of the longest prefix match table, searching an address table using the address table index and the offset as an address key to determine an egress port number of the network device and forwarding the packet based upon at least the egress port number.
摘要翻译：公开了一种将数据报流向网络中的目的地的方法。该方法包括以下步骤：在网络设备的端口处接收数据报，基于输入分组中的字段评估数据报的目的地地址，使用目的地址作为LPM密钥搜索最长前缀匹配（LPM）表，基于在最长前缀匹配表的搜索中找到的条目来确定地址表索引和偏移量，使用地址表索引和偏移量作为地址密钥搜索地址表，以确定网络设备的出口端口号和转发该分组至少基于出口端口号。

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