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公开(公告)号：US07787471B2
公开(公告)日：2010-08-31
申请号：US10985033
申请日：2004-11-10
IPC分类号： H04L12/54
CPC分类号： H04L47/10 , H04L45/7453 , H04L47/20 , H04L47/2408 , H04L47/2441 , H04L47/2458 , H04L47/32 , H04L69/22
摘要： A method of handling a datagram in a network device is disclosed. The steps include receiving a datagram, with the datagram having multiple field values, at a port of a network device, parsing the received datagram to obtain the field values, applying the parsed field values to a Ternary Content Addressable Memory (TCAM), determining matches between the parsed field values and predetermined criteria in the TCAM, indexing into a policy table based on the determined matches to obtain an action entry and taking an action based on the obtained action entry.
摘要翻译： 公开了一种在网络设备中处理数据报的方法。 这些步骤包括在网络设备的端口处接收具有多个字段值的数据报的数据报，解析接收到的数据报以获得字段值，将解析的字段值应用于三元内容可寻址存储器（TCAM），确定匹配 在解析的字段值和TCAM中的预定标准之间，基于所确定的匹配来索引到策略表中，以获得动作条目并基于获得的动作条目采取动作。
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公开(公告)号：US08014390B2
公开(公告)日：2011-09-06
申请号：US11289687
申请日：2005-11-30
CPC分类号： H04L47/10 , H04L45/00 , H04L45/742 , H04L69/12
摘要： A network device for processing packets. The network device includes applying specific fields from a packet to an associated memory device and comparing means for comparing input to the memory device with entries in the memory device. The network device also includes enabling means for enabling selection of bits, by the memory device, that are required to match exactly with bits from the input to the memory device. The network device further includes outputting means for outputting an address for a matched entry by the memory device and applying means for applying a match from the memory device to an associated entry in a table for applying actions from the table that are associated with the match to the packet.
摘要翻译： 用于处理数据包的网络设备。 网络设备包括将特定字段从分组应用到相关联的存储器设备，以及比较装置，用于将存储器设备的输入与存储器设备中的条目进行比较。 网络设备还包括启用装置，用于允许由存储器设备选择与从输入到存储器设备的位精确匹配的位。 网络设备还包括输出装置，用于输出由存储器装置匹配的条目的地址和应用装置，用于将来自存储器装置的匹配应用于表中的相关条目，用于从与表匹配的表中应用动作 包。
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公开(公告)号：US07830892B2
公开(公告)日：2010-11-09
申请号：US11289370
申请日：2005-11-30
IPC分类号： H04L12/56 , G06F15/177
CPC分类号： H04L12/4645 , H04J3/1617
摘要： A network device for implementing VLAN translation on a packet. The network device includes a user network interface port for receiving and transmitting packets to customers of a network. The network device also includes a network to network interface port for communicating with a second network device in the network. A packet received at the user network interface port is classified, translated based on a predefined provider field associated with the packet, and encapsulated with a tag that is removed when the packet is transmitted from the user network interface port to a customer.
摘要翻译： 用于在数据包上实现VLAN转换的网络设备。 网络设备包括用于接收和传送分组给网络的客户的用户网络接口端口。 网络设备还包括网络到网络接口端口，用于与网络中的第二网络设备进行通信。 在用户网络接口端口处接收到的分组被分类，基于与分组相关联的预定义提供商字段进行转换，并且当分组从用户网络接口端口传送到客户时被标签消除。
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公开(公告)号：US20060114938A1
公开(公告)日：2006-06-01
申请号：US11289369
申请日：2005-11-30
CPC分类号： H04L45/00 , H04L12/18 , H04L45/583 , H04L49/351 , H04L49/352
摘要： A network device that processes packets and includes at least one legacy component for performing basic processing on packets in the network device. The network device further includes at least one advanced component for performing advanced processing, which can not be performed by the legacy component, on packets in the network device. When an incoming packet to the legacy component requires advanced processing, the legacy component performs the basic processing and transmits the packet to a loop-back port on advanced component. Upon receiving the packet, basic processing is disabled on the advanced component and advanced processing is performed on the packet.
摘要翻译： 一种网络设备，其处理分组并且包括用于对所述网络设备中的分组执行基本处理的至少一个传统组件。 网络设备还包括至少一个高级组件，用于在网络设备中的分组上执行不能由传统组件执行的高级处理。 当到传统组件的传入分组需要高级处理时，传统组件执行基本处理，并将分组发送到高级组件上的环回端口。 接收到报文后，对高级组件进行基本处理，对报文进行高级处理。
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公开(公告)号：US07715384B2
公开(公告)日：2010-05-11
申请号：US11289497
申请日：2005-11-30
IPC分类号： H04L12/28
CPC分类号： H04L49/602 , H04L49/103 , H04L49/254 , H04L49/3009 , H04L49/3072 , H04L49/352
摘要： A network device for selecting a port from a trunk group to transmit a unicast packet on the selected port. The network device includes at least one trunk group including a plurality of physical ports. The network device also includes a table with a plurality of entries. Each entry is associated with one trunk group and includes a plurality of fields that are associated with ports in the trunk group. Each entry also includes a hash field that is used to select bits from predefined fields of an incoming unicast packet to obtain an index bit for accessing one of the plurality of fields. The network device transmits the unicast packet to a port associated with an accessed one of the plurality of fields.
摘要翻译： 一种用于从中继组中选择端口以在所选端口上传输单播分组的网络设备。 网络设备包括至少一个包括多个物理端口的中继线群组。 网络设备还包括具有多个条目的表。 每个条目与一个中继线组相关联并且包括与中继线群组中的端口相关联的多个字段。 每个条目还包括哈希字段，其用于从入局单播分组的预定义字段中选择比特，以获得用于访问多个字段之一的索引比特。 网络设备将单播分组发送到与所访问的多个字段中的一个相关联的端口。
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公开(公告)号：US20060140130A1
公开(公告)日：2006-06-29
申请号：US11289366
申请日：2005-11-30
CPC分类号： H04L43/00 , H04L12/4641 , H04L49/208 , H04L49/3009 , H04L49/352 , H04L49/602
摘要： A network device for implementing mirroring on packets. The network device includes a plurality of ports, each of which is at least one of an ingress port, an egress port and a mirror-to port. The network device also includes processing means for supporting a plurality of mirroring types. Each of the ingress port, egress port and mirror-to port includes at least one register for supporting the plurality of mirroring types. To support mirroring at each of the ingress port, egress port and mirror-to port predefined bits in the at least one register are set. When an incoming packet is received, the predefined bits are examined to determine which of the plurality of mirroring types to apply to the packet.
摘要翻译： 一种用于实现数据包镜像的网络设备。 网络设备包括多个端口，每个端口是入端口，出端口和镜对端口中的至少一个。 网络设备还包括用于支持多种镜像类型的处理装置。 入口端口，出端口和镜对端口中的每一个包括至少一个用于支持多个镜像类型的寄存器。 为了支持每个入口端口的镜像，设置至少一个寄存器中的出口端口和镜像端口预定义位。 当接收到传入的分组时，检查预定义的比特以确定应用于分组的多个镜像类型中的哪一个。
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公开(公告)号：US20060114901A1
公开(公告)日：2006-06-01
申请号：US11289497
申请日：2005-11-30
申请人： Mohan Kalkunte , John Dull , Bruce Kwan , Venkateshwar Buduma
发明人： Mohan Kalkunte , John Dull , Bruce Kwan , Venkateshwar Buduma
IPC分类号： H04L12/56
CPC分类号： H04L49/602 , H04L49/103 , H04L49/254 , H04L49/3009 , H04L49/3072 , H04L49/352
摘要： A network device for selecting a port from a trunk group to transmit a unicast packet on the selected port. The network device includes at least one trunk group including a plurality of physical ports. The network device also includes a table with a plurality of entries. Each entry is associated with one trunk group and includes a plurality of fields that are associated with ports in the trunk group. Each entry also includes a hash field that is used to select bits from predefined fields of an incoming unicast packet to obtain an index bit for accessing one of the plurality of fields. The network device further includes transmitting means for transmitting the unicast packet to a port associated with an accessed one of the plurality of fields.
摘要翻译： 一种用于从中继组中选择端口以在所选端口上传输单播分组的网络设备。 网络设备包括至少一个包括多个物理端口的中继线群组。 网络设备还包括具有多个条目的表。 每个条目与一个中继线组相关联，并且包括与中继线群组中的端口相关联的多个字段。 每个条目还包括哈希字段，其用于从输入单播数据包的预定义字段中选择位以获得用于访问多个字段之一的索引位。 网络设备还包括用于将单播分组发送到与所访问的多个字段中的一个相关联的端口的发送装置。
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公开(公告)号：US07826481B2
公开(公告)日：2010-11-02
申请号：US11289369
申请日：2005-11-30
CPC分类号： H04L45/00 , H04L12/18 , H04L45/583 , H04L49/351 , H04L49/352
摘要： A network device that processes packets and includes at least one legacy component for performing basic processing on packets in the network device. The network device further includes at least one advanced component for performing advanced processing, which can not be performed by the legacy component, on packets in the network device. When an incoming packet to the legacy component requires advanced processing, the legacy component performs the basic processing and transmits the packet to a loop-back port on advanced component. Upon receiving the packet, basic processing is disabled on the advanced component and advanced processing is performed on the packet.
摘要翻译： 一种网络设备，其处理分组并且包括用于对所述网络设备中的分组执行基本处理的至少一个传统组件。 网络设备还包括至少一个高级组件，用于在网络设备中的分组上执行不能由传统组件执行的高级处理。 当到传统组件的传入分组需要高级处理时，传统组件执行基本处理，并将分组发送到高级组件上的环回端口。 接收到报文后，对高级组件进行基本处理，对报文进行高级处理。
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公开(公告)号：US07570639B2
公开(公告)日：2009-08-04
申请号：US11289499
申请日：2005-11-30
IPC分类号： H04L12/28
CPC分类号： H04L12/18 , H04L45/16 , H04L45/245 , H04L45/745 , H04L49/201 , Y02D50/30
摘要： A network device for uniform distribution of non-unicast traffic, such as layer 2 broadcast, layer 2 multicast, unknown unicast and layer 3 multicast on a truch group. The network device includes at least one trunk group including a plurality of physical ports. The network device is connected to at least one other network device by a number of the plurality of physical ports. The network device also includes a table with a plurality of entries, wherein each entry is associated with the number of the plurality of physical ports on the network device. Each entry specifies if a packet should be transmitted on one of the plurality of physical ports. The network device further includes hashing means for hashing a predefined number of bits from predefined fields in the packet to select one entry in the table. The selected entry is used to identify a destination port. The network device also includes transmitting means for transmitting the packet to the destination port.
摘要翻译： 一种网络设备，用于统一分发非单播流量，如二层广播，二层组播，未知单播和三层组播。 网络设备包括至少一个包括多个物理端口的中继线群组。 网络设备通过多个物理端口的数量连接到至少一个其他网络设备。 网络设备还包括具有多个条目的表，其中每个条目与网络设备上的多个物理端口的数量相关联。 每个条目指定是否应在多个物理端口中的一个物理端口上发送数据包。 网络设备还包括哈希装置，用于从分组中的预定义字段中散列预定数量的比特，以选择表中的一个条目。 所选条目用于标识目标端口。 网络设备还包括用于将分组发送到目的地端口的发送装置。
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公开(公告)号：US20080205403A1
公开(公告)日：2008-08-28
申请号：US11711984
申请日：2007-02-28
申请人： Bora Akyol , Puneet Agarwal , Brian Baird , Venkateshwar Buduma , Mohan Kalkunte
发明人： Bora Akyol , Puneet Agarwal , Brian Baird , Venkateshwar Buduma , Mohan Kalkunte
IPC分类号： H04L12/56
CPC分类号： H04L47/10 , H04L45/7453 , H04L47/2441 , H04L47/32 , H04L49/30 , H04L49/351 , H04L63/0227 , H04L63/20
摘要： Methods and systems for processing packets in data network using multistage classification are disclosed. An example method for processing packets includes receiving a data packet at a first processing stage and examining the packet at the first processing stage to determine a first attribute of the packet. Based on the first attribute, a first classification is assigned to the packet. In the example method, the packet and the first classification are communicated from the first processing stage to a second processing stage and the packet is examined at the second processing stage to determine a second attribute of the packet. Based on the second attribute, a second classification is assigned to the packet. The example method further includes processing the packet based on the first classification and the second classification.
摘要翻译： 公开了使用多级分类处理数据网络中数据包的方法和系统。 处理分组的示例性方法包括在第一处理阶段接收数据分组，并在第一处理阶段检查分组以确定分组的第一属性。 基于第一属性，将第一分类分配给分组。 在示例性方法中，将分组和第一分类从第一处理阶段传送到第二处理阶段，并且在第二处理阶段检查分组以确定分组的第二属性。 基于第二属性，向分组分配第二分类。 该示例方法还包括基于第一分类和第二分类处理分组。
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