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1. 发明授权

US06252880B1 Apparatus and method for selectively supplying a data packet to a selected network node in a buffered distributor 失效
标题翻译：用于选择性地将数据分组提供给缓冲分配器中的所选网络节点的装置和方法
公开(公告)号：US06252880B1
公开(公告)日：2001-06-26
申请号：US08966747
申请日：1997-11-10
申请人： Ganatios Y. Hanna , Mohan V. Kalkunte
发明人： Ganatios Y. Hanna , Mohan V. Kalkunte
IPC分类号： H04L1228
CPC分类号： H04L49/351 , H04L49/254
摘要： A buffered distributor having a plurality of network ports serving respective network nodes includes a distribution core having a filter for selectively supplying a data packet to a selected network port based on the destination address of the received data packet relative to the network address of the network node corresponding to the selected network port. The buffered distributor distributes the received data packet to all network ports. Each network port includes a transmit buffer that loads the distributed data packet in response to an enable signal from the distribution core. The filter logic outputs a filter signal that prevents generation of the enable signal for a selected transmit buffer if a review of the destination address indicates the distributed data packet is not relevant to the corresponding network port. The buffered distributor is particularly effective in a workgroup environment, where the buffered distributor will serve a plurality of clients, a server, and a predetermined network node such as a router or a switch, where it is desirable to limit client-server traffic from being unnecessarily transmitted to the switch or the router.
摘要翻译：具有服务于各个网络节点的多个网络端口的缓冲分配器包括分配核心，所述分配核心具有滤波器，用于基于所接收的数据分组的目的地地址相对于所述网络节点的网络地址选择性地向所选择的网络端口提供数据分组对应于所选网络端口。缓冲的分配器将接收到的数据分组分发到所有网络端口。每个网络端口包括响应于来自分配核心的使能信号而加载分布式数据分组的发送缓冲器。如果对目的地址的检查表明分布式数据分组与相应的网络端口不相关，则滤波器逻辑输出一个滤波器信号，该滤波器信号防止为选定的发送缓冲器产生使能信号。缓冲分配器在工作组环境中特别有效，其中缓冲分配器将服务于多个客户端，服务器以及诸如路由器或交换机的预定网络节点，其中期望将客户端 - 服务器流量从不必要地传送到交换机或路由器。

2. 发明授权

US6118787A Apparatus and method for regulating assigned bandwidth in high speed packet switched networks 失效
标题翻译：用于调节高速分组交换网络中的分配带宽的装置和方法
公开(公告)号：US6118787A
公开(公告)日：2000-09-12
申请号：US884222
申请日：1997-06-27
申请人： Mohan V. Kalkunte , Jayant Kadambi
发明人： Mohan V. Kalkunte , Jayant Kadambi
IPC分类号： H04L12/413 , H04L12/417
CPC分类号： H04L12/4013 , H04L12/413 , H04L12/40013
摘要： A network interface for a shared gigabit Ethernet network selectively modulates an interpacket gap interval following a burst transmission in order to establish a rotating priority arrangement with network stations on the gigabit network. A network station includes a programmable burst timer that counts a burst interval corresponding to a negotiated bandwidth. The network station having accessed the media continues to transmit data packets so long as data is available in a transmit buffer, and the burst timer has not expired. Each data packet within the burst is transmitted after waiting a minimum interpacket gap interval of 96 bit times. Following the burst transmission, the network interface waits a modified delay interval equal to the minimum interpacket gap plus a multiple number of slot times related to the number of stations on the network. The modified delay interval is decremented by a slot time each time the network station detects a burst transmission by another network station. Each network station thus transmits a burst of data packets according to a negotiated bandwidth, and minimizes the number of encountered collisions by deferring to other network stations following a burst transmission.
摘要翻译：用于共享千兆以太网的网络接口选择性地调制突发传输之后的间隔间隔间隔，以便与千兆网络上的网络站建立旋转优先级布置。网络站包括可编程突发定时器，其对与协商带宽相对应的突发间隔进行计数。只要数据在发送缓冲器中可用，并且突发定时器尚未到期，已经访问了媒体的网络站继续发送数据分组。脉冲串中的每个数据分组在等待96位时间的最小间隔间隔间隔后发送。在突发传输之后，网络接口等待等于最小分组间隙的修改的延迟间隔加上与网络上的站数相关的多个时隙时间。每当网络站检测到另一个网络站的突发传输时，修改的延迟时间间隔减少时隙时间。因此，每个网络站根据协商的带宽传输数据分组的突发，并且通过延迟突发传输之后的其他网络站来最小化遇到的冲突的数量。

3. 发明授权

US06704280B1 Switching device and method for traffic policing over a network 失效
标题翻译：用于网络上的流量监管的交换设备和方法
公开(公告)号：US06704280B1
公开(公告)日：2004-03-09
申请号：US09330238
申请日：1999-06-10
申请人： James L. Mangin , Mohan V. Kalkunte , Sanjay Munshi
发明人： James L. Mangin , Mohan V. Kalkunte , Sanjay Munshi
IPC分类号： H04L1226
CPC分类号： H04L47/20 , H04L47/10 , H04L47/11 , H04L47/135 , H04L47/266 , H04L49/103 , H04L49/351 , H04L49/503
摘要： A flow of information over a network is controlled by a policing function placed at a data link layer of the network. For a full-duplex architecture, an accumulated count value for each packet of information received as input by a switching device is ascertained during a predetermined interval. The policing function at a data link layer determines if the accumulated count value has exceeded an interval bit rate based on a transmission rate set by a traffic contract at a networking layer higher than the data link layer. In response to the accumulated count value exceeding the interval bit rate, the switching device sends a PAUSE frame to halt transmission of the information. The half-duplex architecture, collision based backpressure and carrier-sense backpressure techniques are used by the policing function for enforcement of the traffic contracts.
摘要翻译：网络上的信息流由放置在网络的数据链路层的管理功能来控制。对于全双工架构，在预定间隔期间确定由切换设备输入的每个信息分组的累加计数值。数据链路层的监管功能根据由高于数据链路层的网络层的流量合同设定的传输速率，确定累积计数值是否超过了间隔比特率。响应于累积计数值超过间隔比特率，交换设备发送暂停帧以停止信息的传输。通过执行交通合同的监管功能，采用半双工架构，基于碰撞的背压和载波反压技术。

4. 发明授权

US6141327A Arrangement for regulating packet flow rate in half-duplex networks 失效
标题翻译：用于调整半双工网络中的数据包流量的布置
公开(公告)号：US6141327A
公开(公告)日：2000-10-31
申请号：US884658
申请日：1997-06-27
申请人： Mohan V. Kalkunte , Ganatios Y. Hanna
发明人： Mohan V. Kalkunte , Ganatios Y. Hanna
IPC分类号： H04L12/413 , H04L12/56 , H04L12/26
CPC分类号： H04L47/28 , H04L12/413 , H04L47/10 , H04L47/13 , H04L12/2602 , H04L12/40032 , H04L12/4013 , H04L43/00
摘要： A network station transmitting on a half-duplex Ethernet (802.3) half-duplex media includes a delay credit counter that tracks a delay interval after transmission of a data packet to ensure the network station operates according to an assigned transmission rate. The delay credit counter is decremented by a delay count calculated based on the number of transmitted data bytes and the assigned rate of the network station, and incremented during non-transmitting (i.e., idle) intervals by the network station. The network station defers from transmitting on the half-duplex network media until the delay credit counter has a counter value greater than or equal to zero, resulting in a reduced number of collisions between network stations. In the event of a collision, a network station performs a modified collision mediation based upon the assigned bandwidth, where a range of slot times generated according to the truncated binary exponential backoff (TBEB) algorithm is divided into lower and upper integer ranges, where a network station having a greater assigned bandwidth has a greater probability of selecting the lower range of integers, resulting in a greater probability of winning collision mediation.
摘要翻译：在半双工以太网（802.3）半双工介质上发送的网络站包括延迟信用计数器，其跟踪数据分组传输之后的延迟时间间隔，以确保网络站根据分配的传输速率进行操作。延迟信用计数器通过基于发送的数据字节的数量和网络站的分配速率而计算的延迟计数递减，并且由网络站在非发送（即，空闲）间隔期间递增。网络站在半双工网络媒体上延迟发送，直到延迟信用计数器具有大于或等于零的计数值，导致网络站之间的冲突次数减少。在发生冲突的情况下，网络站基于分配的带宽执行修改的冲突中介，其中根据截断的二进制指数退避（TBEB）算法生成的时隙时间的范围被划分为较低和较高的整数范围，其中a 具有较大分配带宽的网络站具有选择较低范围整数的可能性较大，导致获胜冲突中介的可能性更大。

5. 发明授权

US6009104A Apparatus and method for selectively modulating interpacket gap interval following a collision to avoid capture effect 失效
标题翻译：用于在碰撞之后有选择地调制间接间隙间隔的装置和方法，以避免捕获效应
公开(公告)号：US6009104A
公开(公告)日：1999-12-28
申请号：US884556
申请日：1997-06-27
申请人： Mohan V. Kalkunte
发明人： Mohan V. Kalkunte
IPC分类号： H04L12/413
CPC分类号： H04L12/413
摘要： An arrangement for avoiding the capture effect in a half-duplex shared network modifies an interpacket gap timer following collision mediation to ensure a station having transmitted a consecutive number of packets defers to another network station, regardless of the outcome of the collision mediation. If a network having transmitted consecutive packets encounters a collision, the network station selectively modifies the interpacket gap interval based on the selected number of slot times during collision mediation. If the networks station selects zero slot times according to the truncated binary exponential backoff (TBEB) algorithm, the network station increases the interpacket gap by two slot times. If the network station selects one slot time during TBEB collision mediation, the interpacket gap is increased from the minimum IPG by one slot time. Hence, a station having transmitted consecutive packets will always defer to another network station following a collision, regardless of the number of slot times selected during collision mediation.
摘要翻译：用于避免半双工共享网络中的捕获效应的装置修改冲突中介之后的间隔间隔定时器，以确保已经发送连续数量的分组的站延迟到另一网络站，而不管冲突中介的结果如何。如果已发送连续分组的网络遇到冲突，则网络站在冲突调解期间基于所选择的时隙数量选择性地修改分组间隙间隔。如果网络站根据截断的二进制指数退避（TBEB）算法选择零时隙时间，则网络站将间隔间隙增加两个时隙。如果网络站在TBEB冲突中介期间选择一个时隙时间，则间隔间隔从最小IPG增加一个时隙时间。因此，无论在冲突调解期间选择的时隙次数如何，已经发送连续分组的站将始终延迟到冲突之后的另一个网络站。

6. 发明授权

US06973031B1 Method and apparatus for preserving frame ordering across aggregated links supporting a plurality of transmission rates 失效
标题翻译：用于在支持多个传输速率的聚合链路上保持帧排序的方法和装置
公开(公告)号：US06973031B1
公开(公告)日：2005-12-06
申请号：US09271011
申请日：1999-03-17
申请人： Mohan V. Kalkunte , James L. Mangin , Ian Crayford
发明人： Mohan V. Kalkunte , James L. Mangin , Ian Crayford
IPC分类号： H04J1/16 , H04L12/26 , H04L12/56
CPC分类号： H04L47/34 , H04L47/10 , H04L47/2441 , H04L47/6215 , H04L49/90 , H04L49/901 , H04L49/9047
摘要： A method for preserving frame order across an aggregated link comprised of a plurality of virtual links each supporting a particular transmission rate is presented comprising receiving up to a plurality of indications denoting commencement of frame transmission on each of the virtual links, and assigning a plurality of pointer values to a corresponding plurality of records in a pointer value buffer associated with each of the virtual links based, at least in part, on the relative order in which data frames are transmitted on each of the virtual links.
摘要翻译：提供了一种用于在由多个支持特定传输速率的虚拟链路组成的聚合链路之间保持帧顺序的方法，包括：接收多个指示，指示每个虚拟链路上的帧传输的开始，以及分配多个至少部分地基于每个虚拟链路上发送数据帧的相对顺序，将指针值指向与每个虚拟链路相关联的指针值缓冲器中的相应多个记录。

7. 发明授权

US06970420B1 Method and apparatus for preserving frame ordering across aggregated links supporting a plurality of quality of service levels 失效
标题翻译：用于在支持多个服务质量水平的聚合链路之间保持帧排序的方法和装置
公开(公告)号：US06970420B1
公开(公告)日：2005-11-29
申请号：US09271008
申请日：1999-03-17
申请人： Mohan V. Kalkunte , James L. Mangin , Ian Crayford
发明人： Mohan V. Kalkunte , James L. Mangin , Ian Crayford
IPC分类号： H04J1/16 , H04L12/26 , H04L12/56
CPC分类号： H04L47/34 , H04L47/10 , H04L47/2441 , H04L47/6215 , H04L49/90 , H04L49/901 , H04L49/9047
摘要： A method for preserving frame order across an aggregated link comprising receiving up to a plurality of indications denoting commencement of frame transmission on each of a plurality of virtual links each associated with a particular quality of service level comprising the aggregated link, and assigning a plurality of pointer values to a corresponding plurality of records in an appropriate ones of a plurality of pointer value buffers associated with the corresponding plurality of virtual links based, at least in part, on the relative order in which data frames are transmitted on each of the links.
摘要翻译：一种用于在整个聚合链路上保持帧顺序的方法，包括：接收多个指示，所述多个指示表示多个虚拟链路中的每一个上的帧传输开始，每个虚拟链路与包括聚合链路的特定服务质量等级相关联，并且分配多个至少部分地基于在每个链路上传送数据帧的相对顺序，指针值指向与相应的多个虚拟链路相关联的多个指针值缓冲器中的适当的指针值缓冲器中的对应的多个记录。

8. 发明授权

US06744776B1 Servicing priority traffic in multiport network switch 有权
标题翻译：维护多端口网络交换机中的优先流量
公开(公告)号：US06744776B1
公开(公告)日：2004-06-01
申请号：US09690890
申请日：2000-10-18
申请人： Mohan V. Kalkunte , Shashank Merchant , Phil Simons
发明人： Mohan V. Kalkunte , Shashank Merchant , Phil Simons
IPC分类号： H04L1256
CPC分类号： H04L47/2433 , H04L47/50
摘要： A novel method of servicing multiple data queues having different priorities is provided in a network switch. A dequeuing logic circuit services the data queues in a round-robin fashion. Programmable number of data packets is selected from each data queue in each cycle. The dequeuing logic circuit compares the number of data packets selected from a current data queue in a current cycle with the preprogrammed number of data packets set for the current queue, and selects a data packet from the current data queue only if the number of packets selected from the current data queue in the current cycle is less than the preprogrammed number. Selection of a data packet from the current data queue is bypassed, processing a next data queue, if the number of packets selected from the current data queue in the current cycle is not less than the preprogrammed number.
摘要翻译：在网络交换机中提供了一种维护具有不同优先级的多个数据队列的新颖方法。出队逻辑电路以循环方式为数据队列提供服务。在每个循环中从每个数据队列中选择可编程数量的数据包。出队逻辑电路将当前周期中当前数据队列中选择的数据包数目与为当前队列设置的预编程数据包数量进行比较，只有当选择了分组数量时才从当前数据队列中选择一个数据包从当前循环中的当前数据队列小于预编程号。如果从当前循环中的当前数据队列中选择的分组数不少于预编程数，则绕过来自当前数据队列的数据分组的选择，处理下一个数据队列。

9. 发明授权

US06335939B1 Apparatus and method for selectively supplying data packets between media domains in a network repeater 失效
标题翻译：用于在网络中继器中的媒体域之间选择性地提供数据分组的装置和方法
公开(公告)号：US06335939B1
公开(公告)日：2002-01-01
申请号：US08919101
申请日：1997-08-28
申请人： Ganatios Y. Hanna , Mohan V. Kalkunte , Rudolph J. Sterner
发明人： Ganatios Y. Hanna , Mohan V. Kalkunte , Rudolph J. Sterner
IPC分类号： H04J308
CPC分类号： H04L12/1886 , H04L12/4013 , H04L12/4625
摘要： A repeater provides an efficient interconnection of an IEEE 802.3 10 Mb/s network with an IEEE 802.3 100 Mb/s network using minimal buffering. The repeater includes a filter that selectively outputs a data packet, received from the 100 Mb/s network, to the 10 Mb/s network based on the destination address in the received data packet. Specifically, the filter passes all data packets in the 10 Mb/s domain to the 100 Mb/s domain. The filter selectively passes the data packet from the 100 Mb/s domain to the 10 Mb/s domain by determining if the received data packet includes a destination address value that specifies transmission of the data packet to the 10 Mb/s network. If the destination address value does not specify a multicast value or an address of a network node in the 10 Mb/s network, the filter discards the data packet.
摘要翻译：中继器使用最小的缓冲提供IEEE 802.3 10 Mb / s网络与IEEE 802.3 100 Mb / s网络的高效互连。中继器包括一个过滤器，它根据接收到的数据包中的目的地地址选择性地将从100Mb / s网络接收的数据包输出到10Mb / s网络。具体来说，过滤器将10 Mb / s域中的所有数据包传递到100 Mb / s域。滤波器通过确定接收到的数据分组是否包括指定数据分组传输到10Mb / s网络的目的地地址值，选择性地将数据分组从100Mb / s域传递到10Mb / s域。如果目的地址值未指定10Mb / s网络中的组播值或网络节点的地址，则过滤器将丢弃数据包。

10. 发明授权

US06330248B1 Arrangement for transmitting data packets from a media access controller across multiple physical links 失效
标题翻译：用于从媒体接入控制器跨多个物理链路发送数据分组的装置
公开(公告)号：US06330248B1
公开(公告)日：2001-12-11
申请号：US08985719
申请日：1997-12-05
申请人： Gopal S. Krishna , Mohan V. Kalkunte , Shashank C. Merchant
发明人： Gopal S. Krishna , Mohan V. Kalkunte , Shashank C. Merchant
IPC分类号： H04L12413
CPC分类号： H04L25/14
摘要： A gigabit network node having a media access controller outputting data frames at gigabit rates uses multiple 100 MB/s media interface links coupled to a physical interface to enable implementation of a gigabit network using low cost data links. A modified reconciliation layer, also referred to as a media interface, receives a data frame from a gigabit MAC and selectively stores the received packet data into one of a plurality of transmit buffers associated with the respective 100 MB/s media interface links, according to a path selection arbitration logic in the media interface. The path selection arbitration logic may operate according to an equal priority scheme, where each received data frame is routed according to a round-robin scheme. A high priority/low priority scheme may also be used by the path selection arbitration logic, where data frames identified as high priority are temporarily stored in a high priority transmit buffer, and then forwarded to a selected one of the transmit buffers associated with a corresponding 100 MB/s media interface link before outputting data frames from a low priority buffer.
摘要翻译：具有以千兆比特速率输出数据帧的媒体访问控制器的千兆网络节点使用耦合到物理接口的多个100MB / s媒体接口链路来实现使用低成本数据链路的千兆位网络。修改后的协调层（也称为媒体接口）从千兆位MAC接收数据帧，并根据相应的100 MB / s媒体接口链路选择性地将接收的分组数据存储到与相应的100 MB / s媒体接口链路相关联的多个传输缓冲器之一中媒体接口中的路径选择仲裁逻辑。路径选择仲裁逻辑可以根据相等优先级方案来操作，其中每个接收的数据帧根据循环方案进行路由。高优先级/低优先级方案也可以由路径选择仲裁逻辑使用，其中标识为高优先级的数据帧被临时存储在高优先级发送缓冲器中，然后转发到与对应的发送缓冲器相关联的所选发送缓冲器在从低优先级缓冲区输出数据帧之前，需要100 MB / s的媒体接口链接。

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