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91. 发明授权

US07009968B2 Gigabit switch supporting improved layer 3 switching 有权
公开(公告)号：US07009968B2
公开(公告)日：2006-03-07
申请号：US09877014
申请日：2001-06-11
申请人： Shekhar Ambe , Mohan Kalkunte
发明人： Shekhar Ambe , Mohan Kalkunte
IPC分类号： H04L12/56
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 network switch for network communications is disclosed. The switch includes a first data port interface, supporting at least one data port transmitting and receiving data at a first data rate and a second data port interface supporting a at least one data port transmitting and receiving data at a second data rate. The switch also has a CPU interface configured to communicate with a CPU and a memory management unit for communicating data from at least one of the first and second data port interfaces and a memory. It also has a communication channel for communicating data and messaging information between the first and second data port interfaces and the memory management unit and a plurality of semiconductor-implemented lookup tables including an address resolution lookup table, a layer three IP lookup table and VLAN tables. One of the first and second data port interfaces is configured to determine whether an incoming data packet is a unicast packet, a multicast packet or an IP multicast packet; and the address resolution lookup and layer three IP lookup tables are searched to find an egress port for the incoming data packet.

92. 发明申请

US20050232274A1 Method for load balancing in a network switch 有权
公开(公告)号：US20050232274A1
公开(公告)日：2005-10-20
申请号：US11151339
申请日：2005-06-14
申请人： Shiri Kadambi , Mohan Kalkunte , Shekhar Ambe
发明人： Shiri Kadambi , Mohan Kalkunte , Shekhar Ambe
IPC分类号： H04J3/22 , H04L12/56
CPC分类号： H04L47/20 , H04L47/10 , H04L47/125 , H04L47/30 , H04L49/201 , H04L49/351 , H04L49/552
摘要： A method for load balancing in a link aggregation environment, wherein the method includes the steps of determining if a packet flow in a network switch exceeds a predetermined threshold. Then the method includes the step of determining if the packet flow is a candidate for link switching from a first link to a second link if the packet flow exceeds the predetermined threshold. Additionally, the method includes switching the packet flow from the first link to the second link if the packet flow is determined to be a candidate for link switching. Additionally, a method for load balancing in a link aggregation environment including the steps of determining a length of a first frame and a length of a second frame entering the link aggregation environment. Thereafter, determining a flow rate of the first frame and the second frame entering the link aggregation environment. Then a step of determining if the flow rate exceeds a predetermined flow rate threshold is undertaken, and thereafter, a step of determining if the first frame and the second frame are candidates for link switching is completed. As a final step, the method switches a transmission link for the second frame from a first transmission link to a second transmission link.

93. 发明申请

US20050074006A1 Mirroring in a stacked network switch configuration 有权
公开(公告)号：US20050074006A1
公开(公告)日：2005-04-07
申请号：US10979105
申请日：2004-11-02
申请人： Shekhar Ambe , Anders Johnson , Mohan Kalkunte
发明人： Shekhar Ambe , Anders Johnson , Mohan Kalkunte
IPC分类号： H04L12/42 , H04L12/46 , H04L12/56 , H04L29/06 , H04L12/28
CPC分类号： H04L12/46 , H04L12/42 , H04L12/4645 , H04L12/467 , H04L12/5601 , H04L45/24 , H04L45/52 , H04L45/742 , H04L47/10 , H04L49/208 , H04L49/254 , H04L49/351 , H04L49/352 , H04L49/354 , H04L49/602 , H04L69/14 , H04L69/16
摘要： A method of mirroring data to a mirrored to port in a plurality of switches. The method has the steps of determining if data was sent to all of said plurality of switches; determining if said data was sent to a mirrored to port (MTP); and resending said data to all of said plurality of switches if mirroring is enabled and said data was not sent to said MTP.

94. 发明申请

US20050036488A1 Stacked network switch configuration 有权
标题翻译：堆叠网络交换机配置
公开(公告)号：US20050036488A1
公开(公告)日：2005-02-17
申请号：US10945115
申请日：2004-09-21
申请人： Mohan Kalkunte , Shiri Kadambi , Shekhar Ambe
发明人： Mohan Kalkunte , Shiri Kadambi , Shekhar Ambe
IPC分类号： H04L12/18 , H04L12/42 , H04L12/46 , H04L12/56 , H04L29/06 , H04L29/08
CPC分类号： H04L47/2408 , H04L12/18 , H04L12/42 , H04L12/46 , H04L12/4625 , H04L12/4645 , H04L12/467 , H04L12/56 , H04L12/5602 , H04L45/24 , H04L45/245 , H04L45/742 , H04L47/10 , H04L47/125 , H04L47/2441 , H04L47/2458 , H04L47/50 , H04L47/56 , H04L47/6205 , H04L49/254 , H04L49/3009 , H04L49/3081 , H04L49/351 , H04L49/354 , H04L49/602 , H04L49/90 , H04L49/901 , H04L67/10 , H04L69/14 , H04L69/16 , H04L69/161
摘要： A method of handling packets includes inserting a stack-specific tag into a packet, then processing the packet in a stack of network switches in accordance with tag information in the stack-specific tag. The stack-specific tag is then removed from the packet.
摘要翻译：处理分组的方法包括将特定于堆栈的标签插入到分组中，然后根据堆栈特定标签中的标签信息在一堆网络交换机中处理分组。然后从数据包中删除堆栈特定的标签。

95. 发明授权

US06813268B1 Stacked network switch configuration 有权
标题翻译：堆叠网络交换机配置
公开(公告)号：US06813268B1
公开(公告)日：2004-11-02
申请号：US09461719
申请日：1999-12-16
申请人： Mohan Kalkunte , Shiri Kadambi , Shekhar Ambe
发明人： Mohan Kalkunte , Shiri Kadambi , Shekhar Ambe
IPC分类号： H04L1228
CPC分类号： H04L12/5601 , H04L12/18 , H04L12/42 , H04L12/46 , H04L12/4625 , H04L12/4645 , H04L12/467 , H04L12/56 , H04L12/5602 , H04L45/24 , H04L45/245 , H04L45/742 , H04L47/10 , H04L47/125 , H04L47/2408 , H04L47/2441 , H04L47/2458 , H04L47/41 , H04L47/6215 , H04L47/623 , H04L49/3009 , H04L49/3081 , H04L49/351 , H04L49/354 , H04L49/602 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9073 , H04L49/9094 , H04L67/10 , H04L69/14 , H04L69/16 , H04L69/161
摘要： A method of handling packets includes inserting a stack-specific tag into a packet, then processing the packet in a stack of network switches in accordance with tag information in the stack-specific tag. The stack-specific tag is then removed from the packet.
摘要翻译：处理分组的方法包括将特定于堆栈的标签插入到分组中，然后根据堆栈特定标签中的标签信息在一堆网络交换机中处理分组。然后从数据包中删除堆栈特定的标签。

96. 发明授权

US06430188B1 Unified table for L2, L3, L4, switching and filtering 失效
标题翻译： L2，L3，L4，切换和过滤的统一表
公开(公告)号：US06430188B1
公开(公告)日：2002-08-06
申请号：US09619488
申请日：2000-07-19
申请人： Shiri Kadambi , Mohan Kalkunte , Shekhar Ambe
发明人： Shiri Kadambi , Mohan Kalkunte , Shekhar Ambe
IPC分类号： H04L1256
CPC分类号： H04L12/46 , H04L12/18 , H04L12/42 , H04L12/4625 , H04L12/4645 , H04L12/467 , H04L12/56 , H04L12/5601 , H04L12/5602 , H04L29/06 , H04L29/12009 , H04L29/12018 , H04L45/00 , H04L45/24 , H04L45/245 , H04L45/742 , H04L47/10 , H04L47/125 , H04L47/2408 , H04L47/2441 , H04L47/2458 , H04L49/205 , H04L49/254 , H04L49/3009 , H04L49/3027 , H04L49/3081 , H04L49/309 , H04L49/351 , H04L49/354 , H04L49/602 , H04L49/606 , H04L49/90 , H04L49/901 , H04L49/9063 , H04L49/9073 , H04L61/10 , H04L67/10 , H04L69/14 , H04L69/16 , H04L69/161 , H04L69/323 , H04L69/329
摘要： A network switch for network communications, wherein the network switch includes at least one data port interface supporting a plurality of data ports transmitting and receiving data at a first data rate and a second data rate. The at least one data port interface includes an ingress logic circuit in communication with the at least one data port interface for generating at least one of an ingress address resolution and a filtering search request. A CPU interface is provided and configured to communicate with a CPU. A shared hierarchical memory structure including an internal memory in communication with the at least one data port interface, and an external memory in communication with a memory management unit via an external memory interface is provided. A communication channel is provided for communicating data between the at least one data port interface, the internal memory, the CPU interface, and the memory management unit. Additionally, a unified table is provided, wherein the unified table is in connection with the communication channel, and the at least one data port interface. The unified table contains packet handling data for the network switch.
摘要翻译：一种用于网络通信的网络交换机，其中所述网络交换机包括支持以第一数据速率和第二数据速率发送和接收数据的多个数据端口的至少一个数据端口接口。所述至少一个数据端口接口包括与所述至少一个数据端口接口通信的入口逻辑电路，用于生成入口地址解析和过滤搜索请求中的至少一个。提供并配置CPU接口与CPU进行通信。提供了包括与所述至少一个数据端口接口通信的内部存储器和经由外部存储器接口与存储器管理单元通信的外部存储器的共享分层存储器结构。提供通信信道用于在至少一个数据端口接口，内部存储器，CPU接口和存储器管理单元之间传送数据。另外，提供统一的表，其中统一表与通信信道和至少一个数据端口接口相关联。统一表包含网络交换机的数据包处理数据。

97. 发明授权

US5905870A Arrangement for initiating and maintaining flow control in shared-medium, full-duplex, and switched networks 失效
标题翻译：在共享介质，全双工和交换网络中启动和维护流量控制的布置
公开(公告)号：US5905870A
公开(公告)日：1999-05-18
申请号：US709889
申请日：1996-09-11
申请人： Jim Mangin , Shashank Merchant , Mohan Kalkunte
发明人： Jim Mangin , Shashank Merchant , Mohan Kalkunte
IPC分类号： H04L12/413 , H04L12/56 , H04L29/06 , G06F3/00 , G06F13/00
CPC分类号： H04L47/10 , H04L47/30 , H04L69/12 , H04L12/413 , H04L49/30 , H04L49/351
摘要： Flow control signals in half-duplex and full-duplex networks are initiated and maintained based on the detected number of data bytes stored in a receive buffer from payload data of received data packets. If the number of stored data bytes exceeds a predetermined threshold, the network interface initiates flow control. Alternatively, the decision to initiate flow control may be based upon the rate at which the receive buffer is emptied compared to the number of stored data bytes in the receive buffer, or the rate the data bytes are stored into the receive buffer. The duration of the flow control is calculated as a wait time interval selected in response to the number of stored data bytes. The wait time may be selectively set as an integer multiple of slot times, or as a time interval based on the number of stored data bytes relative to the removal rate. Hence, the precise control and the initiation of the flow control for a specific wait time prevents loss of transmitted data while maintaining network throughput.
摘要翻译：基于从接收到的数据分组的有效载荷数据接收缓冲器中检测到的数据字节数来启动和维护半双工和全双工网络中的流控制信号。如果存储的数据字节数超过预定阈值，则网络接口启动流控制。或者，启动流控制的决定可以基于接收缓冲器被清空的速率与接收缓冲器中存储的数据字节的数量相比较，或数据字节被存储到接收缓冲器中的速率。流量控制的持续时间被计算为响应于存储的数据字节数而选择的等待时间间隔。可以将等待时间选择性地设置为时隙时间的整数倍，或者基于相对于去除速率存储的数据字节的数量的时间间隔。因此，针对特定等待时间的精确控制和流程控制的启动防止了传输数据的丢失，同时保持了网络吞吐量。

98. 发明授权

US5894559A System for selectively reducing capture effect in a network station by increasing delay time after a predetermined number of consecutive successful transmissions 失效
标题翻译：用于通过在预定数量的连续成功传输之后增加延迟时间来选择性地降低网络站中的捕获效应的系统
公开(公告)号：US5894559A
公开(公告)日：1999-04-13
申请号：US698102
申请日：1996-08-15
申请人： Gopal Krishna , Mohan Kalkunte
发明人： Gopal Krishna , Mohan Kalkunte
IPC分类号： H04L12/413 , H04L12/44 , G06F13/00
CPC分类号： H04L12/413 , H04L12/44
摘要： Delay times are modified in an Ethernet network device having captured the media channel by increasing the interframe spacing (IFS) between data packets. The modified IFS interval, increased by adding a delay interval to the minimum interpacket gap (IPG) interval after a predetermined number of consecutive successful transmissions, enables other network stations to transmit data during the deferral interval. The Ethernet network device maintains the modified IFS for a limited deferral interval, based upon a predetermined time interval or a number of successful transmissions by other network stations. Additional delay intervals may be added if the network station continues to exceed the predetermined number of consecutive successful transmissions. Hence, a network station can avoid capturing a network channel while ensuring access latencies.
摘要翻译：在已经通过增加数据分组之间的帧间间隔（IFS）捕获媒体信道的以太网网络设备中修改延迟时间。通过在预定数量的连续成功传输之后将延迟间隔添加到最小间隔间隔（IPG）间隔来增加的修改的IFS间隔使其他网络站能够在延迟间隔期间发送数据。以太网网络设备基于预定的时间间隔或其他网络站的成功传输的数量，在有限的延迟间隔内维护修改的IFS。如果网络站继续超过预定数量的连续成功传输，则可以添加额外的延迟间隔。因此，网络站可以避免在确保接入延迟的同时捕获网络信道。

99. 发明授权

US5852723A Method and apparatus for prioritizing traffic in half-duplex networks 失效
标题翻译：用于在半双工网络中优先处理流量的方法和装置
公开(公告)号：US5852723A
公开(公告)日：1998-12-22
申请号：US692689
申请日：1996-08-06
申请人： Mohan Kalkunte , Jayant Kadambi , Jim Mangin , Shashank Merchant
发明人： Mohan Kalkunte , Jayant Kadambi , Jim Mangin , Shashank Merchant
IPC分类号： H04L12/413 , H04L12/64 , G06F13/00
CPC分类号： H04L12/40156 , H04L12/413 , H04L12/6418 , H04L2012/6435 , H04L2012/6448 , H04L2012/6454 , H04L2012/6464
摘要： Collision delay intervals are modified in Ethernet network devices transmitting priority data requiring a guaranteed latency by multiplying an integer multiple number of slot times with a fractional coefficient. A network device having priority data for transmission uses the conventional Truncated Binary Exponential Backoff (TBEB) algorithm during the first access attempt to calculate a collision delay interval from a randomly selected integer multiple of slot times. If the network device encounters another collision, the next randomly selected integer multiple of slot times is multiplied by the fractional coefficient. Use of the fractional coefficient during collision mediation on a half-duplex Ethernet network provides a bounded access latency for real-time and multimedia applications by granting the network device a higher probability of successfully accessing the network media.
摘要翻译：在以太网网络设备中修改冲突延迟间隔，通过将整数倍数的时隙时间乘以分数系数来传输需要保证延迟的优先级数据。具有传输优先权数据的网络设备在第一次访问尝试期间使用传统的截断二进制指数退避（TBEB）算法来从随机选择的时隙倍数的整数倍计算冲突延迟间隔。如果网络设备遇到另一个冲突，则下一个随机选择的时隙倍数乘以分数系数。在半双工以太网上的冲突中介中使用分数系数，通过授予网络设备成功访问网络媒体的更高概率，为实时和多媒体应用提供了有限的访问延迟。

100. 发明授权

US5812554A Efficiency of a network having a minimum data transmission time 失效
标题翻译：具有最小数据传输时间的网络的效率
公开(公告)号：US5812554A
公开(公告)日：1998-09-22
申请号：US654406
申请日：1996-05-28
申请人： Jayant Kadambi , Mohan Kalkunte , Jim Mangin
发明人： Jayant Kadambi , Mohan Kalkunte , Jim Mangin
IPC分类号： H04L12/413 , H04J3/24
CPC分类号： H04L12/413
摘要： Efficient communication in a network having a minimum data transmission time interval wherein a data packet is transmitted beginning at a start of the minimum data transmission time interval. An end of the minimum data transmission time interval is determined and then at least one next data packet is transmitted after the data packet if the end of the minimum data transmission time is after the end of the data packet.
摘要翻译：在具有最小数据传输时间间隔的网络中的高效通信，其中从最小数据传输时间间隔的开始开始发送数据分组。确定最小数据传输时间间隔的结束，并且如果最小数据传输时间的结束是在数据分组结束之后，则在数据分组之后发送至少一个下一个数据分组。

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