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1. 发明申请

US20020034187A1 Network switch having port blocking capability 有权
标题翻译：网络交换机具有端口阻塞能力
公开(公告)号：US20020034187A1
公开(公告)日：2002-03-21
申请号：US09953881
申请日：2001-09-18
申请人： Broadcom Corporation
发明人： Mohan Kalkunte , Shekhar Ambe , Sam Sampath
IPC分类号： H04L012/28 , H04L012/66
CPC分类号： H04L49/3009 , H04L49/351 , H04L49/354 , H04L49/357
摘要： A switch is configured to block packets from being transmitted through designated ports. The switch has port bitmap generator configured to obtain a port bitmap and a table is configured to store a block mask indicating which port the packet should not be transmitted. A block mask lookup is configured to determine the block mask for the packet from the table, and a transmit port bitmap generator is configured to determine which ports the packet should be transmitted using the port bitmap and the block mask.
摘要翻译：交换机被配置为阻止通过指定端口传输数据包。交换机具有端口位图生成器，其被配置为获得端口位图，并且表被配置为存储指示哪个端口不应该发送该分组的块掩码。块掩模查找被配置为确定来自表的分组的块掩码，并且发送端口位图生成器被配置为使用端口位图和块掩码来确定应该发送数据包的哪些端口。

2. 发明申请

US20020027908A1 Switch fabric with path redundancy 有权
标题翻译：交换结构具有路径冗余
公开(公告)号：US20020027908A1
公开(公告)日：2002-03-07
申请号：US09883212
申请日：2001-06-19
申请人： BROADCOM CORPORATION
发明人： Mohan Kalkunte , Srinivas Sampath , Daniel Tai , Soma Pullela , Kevin Cameron
IPC分类号： H04L012/28
CPC分类号： H04L12/5601 , H04L12/18 , H04L12/1881 , H04L45/00 , H04L45/245 , H04L45/54 , H04L45/745 , H04L47/10 , H04L47/2408 , H04L47/2425 , H04L47/2441 , H04L47/245 , H04L47/286 , H04L47/30 , H04L47/32 , H04L47/6205 , H04L47/6215 , H04L47/6225 , H04L49/101 , H04L49/201 , H04L49/203 , H04L49/205 , H04L49/25 , H04L49/254 , H04L49/30 , H04L49/309 , H04L49/352 , H04L49/608 , H04L49/90 , H04L49/901 , H04L49/9094 , H04L2012/5651 , H04L2012/5665 , H04L2012/5679 , H04L2012/5681 , H04L2012/5683 , Y02D50/30
摘要： A method of forwarding data in a network switch fabric is disclosed. An incoming data packet is received at a first port of the fabric and a first packet portion, less than a full packet length, is read to determine particular packet information, the particular packet information including a source address and a destination address. An egress port bitmap is determined based on a lookup in a forwarding table and it is determined if the destination address belongs to a trunk group of trunked ports. The incoming data packet is forwarded based on the egress port bitmap, when the destination address does not belong to the trunk group. When the destination address does belong to the trunk group, a particular trunked port of the trunk group is determined and the incoming data packet is forwarded thereto. More specifically, the particular trunked port of the trunk group may be determined by calculating a hash value based on the source address and the destination value and selecting the particular trunked port based on the hash value. Additionally, a class of service for the incoming data packet is also determined from the particular packet information and a priority for forwarding is set based on the class of service.
摘要翻译：公开了一种在网络交换结构中转发数据的方法。在结构的第一端口处接收输入数据分组，并且读取小于全分组长度的第一分组部分以确定特定分组信息，所述特定分组信息包括源地址和目的地地址。基于转发表中的查找来确定出口端口位图，并且确定目的地址是否属于中继端口的中继线群组。输入的数据包根据出口端口位图转发，当目的地址不属于中继线群组时。当目的地址属于中继组时，确定中继组的特定中继端口，并将传入的数据包转发到其中。更具体地，可以通过基于源地址和目的地值计算哈希值并基于哈希值来选择特定中继端口来确定中继线群组的特定中继端口。此外，还根据特定分组信息确定用于输入数据分组的一类服务，并且基于服务等级设置用于转发的优先级。

3. 发明申请

US20020012345A1 Cascading of gigabit switches 失效
标题翻译：千兆交换机级联
公开(公告)号：US20020012345A1
公开(公告)日：2002-01-31
申请号：US09877013
申请日：2001-06-11
申请人： BROADCOM CORPORATION
发明人： Mohan Kalkunte , Shekhar Ambe
IPC分类号： H04L012/28
CPC分类号： H04L47/2458 , H04L12/462 , H04L45/00 , H04L45/16 , H04L45/245 , H04L45/52 , H04L45/742 , H04L47/10 , H04L47/266 , H04L47/29 , H04L47/32 , H04L49/102 , H04L49/109 , H04L49/15 , H04L49/3009 , H04L49/3018 , H04L49/3036 , H04L49/351 , H04L49/352 , H04L49/354 , H04L49/506 , H04L49/508 , H04L49/602 , H04L69/22 , Y02D50/30
摘要： A method of handling data packets in a series of network switches includes receiving an incoming data packet at a data port of a first switch of the series of network switches. A module id bitmap of the incoming data packet is resolved and a bit corresponding to the first switch of the module id bitmap is examined to determine if the bit is set. A destination address of the incoming data packet is resolved when the corresponding bit is set and the incoming data packet is forwarded or dropped based on the destination address. When the corresponding bit is not set, the incoming data packet is forwarded to a next switch of the series of network switches. A network switch configured to allow for cascading of data packets is also disclosed.
摘要翻译：在一系列网络交换机中处理数据分组的方法包括在一系列网络交换机的第一交换机的数据端口处接收输入数据分组。解析输入数据包的模块ID位图，并检查对应于模块ID位图的第一个开关的位，以确定该位是否被置位。当对应的位被设置并且基于目的地地址转发或丢弃传入数据分组时，解析输入数据分组的目的地址。当相应位未设置时，输入数据包将被转发到一系列网络交换机的下一个交换机。还公开了配置为允许数据分组的级联的网络交换机。

4. 发明申请

US20020037006A1 Hardware assist for address learning 有权
标题翻译：硬件辅助地址学习
公开(公告)号：US20020037006A1
公开(公告)日：2002-03-28
申请号：US09893972
申请日：2001-06-29
申请人： BROADCOM CORPORATION
发明人： Srinivas Sampath , Mohan Kalkunte
IPC分类号： H04L012/56
CPC分类号： H04L49/351 , H04L49/352
摘要： A switch using indicators for address learning. The switch has a first activator configured to control a first indicator to indicate when a source address needs to be learned and when a source address has been learned. A second activator is configured to control a second indicator to indicate when a destination address has not been learned and when a destination address has been learned. Finally, a third activator is configured to control a third indicator to indicate when a source address has not been learned in all switches.
摘要翻译：使用地址学习指标的开关。交换机具有第一激活器，其被配置为控制第一指示符以指示何时需要学习源地址以及何时学习源地址。第二激活器被配置为控制第二指示符以指示目的地地址何时未被学习以及何时已经学习了目的地地址。最后，第三个激活器被配置为控制第三指示符以指示何时在所有交换机中学习源地址。

5. 发明申请

US20020034181A1 Switch assembly having multiple blades in a chassis 有权
标题翻译：开关组件在机箱中具有多个刀片
公开(公告)号：US20020034181A1
公开(公告)日：2002-03-21
申请号：US09956020
申请日：2001-09-20
申请人： Broadcom Corporation
发明人： Mohan Kalkunte , Shekhar Ambe
IPC分类号： H04L012/28
CPC分类号： H04L43/00 , H04L43/12 , H04L49/3018 , H04L49/351 , H04L49/354
摘要： A switch assembly having multiple blades in a chassis and a method of using that assembly to switch data is disclosed. A network switch assembly for network communications includes at least one fabric blade and a plurality of port blades. The at least one fabric blade has at least one switch having a plurality of data port interfaces, supporting a plurality of fabric data ports transmitting and receiving data, and a CPU interface, where CPU interface is configured to communicate with a CPU. The at least one fabric blade also has a CPU subsystem communicating with the CPU interface. Each of said plurality of port blades has at least one switch having a plurality of data port interfaces, supporting a plurality of port data ports transmitting and receiving data. The plurality of port data ports communicate with the plurality of fabric data ports along multiple paths such that data received by the port data ports is switched to a destination port of the network switch assembly along a specified path of the multiple paths based on a portion of the received data. In particular, the invention relates to configurations having five and nine blades to provide the requisite switching capacity.
摘要翻译：公开了一种在底盘中具有多个叶片的开关组件以及使用该组件切换数据的方法。用于网络通信的网络交换机组件包括至少一个结构刀片和多个端口刀片。至少一个织物刀片具有至少一个开关，其具有多个数据端口接口，支持多个结构数据端口发送和接收数据;以及CPU接口，其中CPU接口被配置为与CPU通信。至少一个织物刀片还具有与CPU接口通信的CPU子系统。所述多个端口刀片中的每一个具有至少一个具有多个数据端口接口的开关，支持多个端口数据端口发送和接收数据。多个端口数据端口沿着多个路径与多个结构数据端口进行通信，使得由端口数据端口接收的数据沿着多个路径的指定路径被切换到网络交换机组件的目的地端口收到的数据。特别地，本发明涉及具有五个和九个刀片以提供必要的切换能力的配置。

6. 发明申请

US20020012340A1 Frame forwarding in a switch fabric 有权
标题翻译：交换结构中的帧转发
公开(公告)号：US20020012340A1
公开(公告)日：2002-01-31
申请号：US09883214
申请日：2001-06-19
申请人： BROADCOM CORPORATION
发明人： Mohan Kalkunte , Shekhar Ambe , Srinivas Ampath
IPC分类号： H04L012/54
CPC分类号： H04L12/5601 , H04L12/18 , H04L12/1881 , H04L45/00 , H04L45/245 , H04L45/54 , H04L45/745 , H04L47/10 , H04L47/2408 , H04L47/2425 , H04L47/2441 , H04L47/245 , H04L47/286 , H04L47/30 , H04L47/32 , H04L47/6205 , H04L47/6215 , H04L47/6225 , H04L49/101 , H04L49/201 , H04L49/203 , H04L49/205 , H04L49/25 , H04L49/254 , H04L49/30 , H04L49/309 , H04L49/352 , H04L49/608 , H04L49/90 , H04L49/901 , H04L49/9094 , H04L2012/5651 , H04L2012/5665 , H04L2012/5679 , H04L2012/5681 , H04L2012/5683 , Y02D50/30
摘要： A method of forwarding data in a network switch fabric is disclosed. An incoming data packet is received at a first port of the fabric and a first packet portion, less than a full packet length, is read to determine particular packet information including an opcode value. The opcode value allows the fabric to determine the packet type, sucha a whether the packet is a broadcast packet, a unicast packet, a multicast packet, etc. Based on the opcode value read, a particular forwarding table of a plurality forwarding tables is read and an egress port bitmap is determined based on entries read from the particular forwarding table. The incoming data packet is then forwarded based on the egress port bitmap. In addition, the architecture of the switch fabric is also disclosed.
摘要翻译：公开了一种在网络交换结构中转发数据的方法。在结构的第一端口处接收输入数据分组，并且读取小于全分组长度的第一分组部分以确定包括操作码值的特定分组信息。操作码值允许结构确定分组类型，例如分组是广播分组，单播分组，组播分组等。基于读取的操作码值，读取多个转发表的特定转发表并且基于从特定转发表读取的条目来确定出口端口位图。然后根据出口端口位图转发输入数据包。此外，还公开了交换结构的架构。

7. 发明申请

US20030174718A1 Scalable packet filter for a network device 审中-公开
标题翻译：适用于网络设备的可扩展包过滤器
公开(公告)号：US20030174718A1
公开(公告)日：2003-09-18
申请号：US10351487
申请日：2003-01-27
申请人： Broadcom Corporation
发明人： Srinivas Sampath , Mohan Kalkunte
IPC分类号： H04L012/28 , H04L012/56
CPC分类号： H04L47/2433 , H04L47/10 , H04L47/2408 , H04L47/2441 , H04L47/31 , H04L47/32
摘要： A network device for network communications is disclosed. The device includes at least one data port interface, the at least one data port interface supporting at least one data port transmitting and receiving data and a CPU interface, the CPU interface configured to communicate with a CPU. The network device also includes a memory communicating with the at least one data port interface, a memory management unit, the memory management unit including a memory interface for communicating data from the at least one data port interface and the memory and a communication channel, the communication channel for communicating data and messaging information between the at least one data port interface, the CPU interface, the memory, and the memory management unit. The network device also includes a fast filtering processor, the fast filtering processor filtering packets coming into the at least one data port interface, and taking selective filter action on a particular packet of the packets based upon specified packet field values. The specified packet field values are obtained by applying a filter mask, obtained from a field table, to the particular packet and the selective filter action is obtained from a policy table based on the specified packet field values.
摘要翻译：公开了一种用于网络通信的网络设备。所述设备包括至少一个数据端口接口，所述至少一个数据端口接口支持至少一个数据端口发送和接收数据以及CPU接口，所述CPU接口被配置为与CPU进行通信。网络设备还包括与至少一个数据端口接口通信的存储器，存储器管理单元，存储器管理单元包括用于从至少一个数据端口接口和存储器传送数据的存储器接口和通信通道，用于在所述至少一个数据端口接口，CPU接口，存储器和存储器管理单元之间传送数据和消息传递信息的通信信道。所述网络设备还包括快速过滤处理器，所述快速过滤处理器过滤进入所述至少一个数据端口接口的分组，以及基于指定的分组字段值对分组的特定分组进行选择性过滤器动作。通过将从字段表获得的过滤掩码应用于特定分组，并且基于指定的分组字段值从策略表获得选择性过滤器动作来获得指定的分组字段值。

8. 发明申请

US20030021229A1 Multiple virtual channels for use in network devices 有权
标题翻译：用于网络设备的多个虚拟通道
公开(公告)号：US20030021229A1
公开(公告)日：2003-01-30
申请号：US10173422
申请日：2002-06-18
申请人： Broadcom Corporation
发明人： Shiri Kadambi , Shekhar Ambe , Mohan Kalkunte , Sandeep Relan , Allan Christie , Uri Elzur , Martin Lund , Daniel Talayco
IPC分类号： H04J001/16 , H04J003/14
CPC分类号： H04L47/2433 , H04L12/4641 , H04L29/06 , H04L45/66 , H04L47/10 , H04L47/11 , H04L47/16 , H04L47/18 , H04L47/24 , H04L47/2441 , H04L47/266 , H04L47/29 , H04L47/30 , H04L47/33 , H04L47/50 , H04L47/6205 , H04L47/6215 , H04L47/6225 , H04L49/205 , H04L49/3018 , H04L49/351 , H04L49/50 , H04L49/508 , H04L49/90 , Y02D50/10
摘要： A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled.
摘要翻译：公开了一种在网络设备之间建立虚拟通道的方法。在本地网络设备与远程网络设备建立虚拟信道的情况下，虚拟信道请求消息从本地网络设备发送到远程网络设备。接收到虚拟信道确认消息和远程能力列表，并且发送虚拟信道恢复消息和本地能力列表。然后启用虚拟通道。在远程网络设备与本地网络设备建立虚拟信道的情况下，由远程网络设备从本地网络设备接收虚拟信道请求消息。发送虚拟信道确认消息和远程能力列表，并且接收虚拟信道恢复消息和本地能力列表。然后启用虚拟通道。

9. 发明申请

US20020012585A1 Gigabit switch with fast filtering processor 有权
标题翻译：具有快速过滤处理器的千兆交换机
公开(公告)号：US20020012585A1
公开(公告)日：2002-01-31
申请号：US09877011
申请日：2001-06-11
申请人： BROADCOM CORPORATION
发明人： Mohan Kalkunte , Shekhar Ambe , Srinivas Sampath
IPC分类号： F01D009/04 , H04L012/28
CPC分类号： H04L47/2458 , H04L12/462 , H04L45/00 , H04L45/16 , H04L45/245 , H04L45/52 , H04L45/742 , H04L47/10 , H04L47/266 , H04L47/29 , H04L47/32 , H04L49/102 , H04L49/109 , H04L49/15 , H04L49/3009 , H04L49/3018 , H04L49/3036 , H04L49/351 , H04L49/352 , H04L49/354 , H04L49/506 , H04L49/508 , H04L49/602 , H04L69/22 , Y02D50/30
摘要： A network switch for network communications includes at least one data port interface supporting a plurality of data ports transmitting and receiving data. A CPU interface is configured to communicate with a CPU, and an internal memory communicates with the at least one data port interface. A memory management unit is provided for communicating data from at least one data port interface and the memory. A communication channel is provided, for communicating data and messaging information between the at least one data port interface, the memory, and the memory management unit. The configuration of the network switch also includes a fast filtering process, with the fast filtering processor filtering packets coming into the at least one data port interface. Selective filter action is taken based upon a filtering result.
摘要翻译：用于网络通信的网络交换机包括支持多个数据端口发送和接收数据的至少一个数据端口接口。 CPU接口被配置为与CPU通信，并且内部存储器与所述至少一个数据端口接口通信。提供了一种用于从至少一个数据端口接口和存储器传送数据的存储器管理单元。提供了一种通信信道，用于在所述至少一个数据端口接口，存储器和存储器管理单元之间传送数据和消息传递信息。网络交换机的配置还包括快速过滤过程，快速过滤处理器过滤分组进入至少一个数据端口接口。基于过滤结果进行选择性过滤器操作。

10. 发明申请

US20020009090A1 Flexible header protocol for network switch 失效
标题翻译：用于网络交换的灵活头协议
公开(公告)号：US20020009090A1
公开(公告)日：2002-01-24
申请号：US09877022
申请日：2001-06-11
申请人： BROADCOM CORPORATION
发明人： Mohan Kalkunte , Shekhar Ambe
IPC分类号： H04L012/28 , H04L012/56
CPC分类号： H04L47/2458 , H04L12/462 , H04L45/00 , H04L45/16 , H04L45/245 , H04L45/52 , H04L45/742 , H04L47/10 , H04L47/266 , H04L47/29 , H04L47/32 , H04L49/102 , H04L49/109 , H04L49/15 , H04L49/3009 , H04L49/3018 , H04L49/3036 , H04L49/351 , H04L49/352 , H04L49/354 , H04L49/506 , H04L49/508 , H04L49/602 , H04L69/22 , Y02D50/30
摘要： A data switch for network communications includes a first data port interface which supports at least one data port which transmits and receives data. A second data port interface is also provided supporting at least one data port transmitting and receiving data. A CPU interface is provided, with the CPU interface configured to communicate with a CPU. A common memory is provided, and communicates with the first data port interface and the second data port interface. A memory management unit is provided, and communicates data from the first data port interface and the second data port interface and an common memory. At least two sets of communication channels are provided, with each of the communication channels communicating data and messaging information between the first data port interface, the second data port interface, and the memory management unit. One of the first data port interface and the second data port interface is configured to determine forwarding information from a flexible length header for an incoming data packet received at a port of the one data port interface, and is configured to determine the forwarding information by shifting the information field positions read from the flexible length header.
摘要翻译：用于网络通信的数据交换机包括支持发送和接收数据的至少一个数据端口的第一数据端口接口。还提供了支持至少一个数据端口发送和接收数据的第二数据端口接口。提供了CPU接口，CPU接口配置为与CPU进行通信。提供通用存储器，并与第一数据端口接口和第二数据端口接口通信。提供存储器管理单元，并且传送来自第一数据端口接口和第二数据端口接口的数据以及公共存储器。提供至少两组通信信道，其中每个通信信道在第一数据端口接口，第二数据端口接口和存储器管理单元之间传送数据和消息传递信息。第一数据端口接口和第二数据端口接口之一被配置为从在一个数据端口接口的端口处接收到的输入数据分组的灵活长度头部确定转发信息，并且被配置为通过移位来确定转发信息从柔性长度头读取的信息字段位置。

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