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1. 发明授权

US08599844B2 System and method for flexible memory system configuration and access 有权
标题翻译：灵活的内存系统配置和访问的系统和方法
公开(公告)号：US08599844B2
公开(公告)日：2013-12-03
申请号：US12722593
申请日：2010-03-12
申请人： Krishnamurthy Subramanian , Raja Jayakumar , Jason Lee
发明人： Krishnamurthy Subramanian , Raja Jayakumar , Jason Lee
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L49/901 , H04L45/54
摘要： A packet network device includes a packet network processor memory system for storing information used to process and forward packets of information in and through the network device. The information is included in look-up tables whose entries can be mapped either horizontally or vertically into the memory system. In the event that the entries are mapped horizontally, a complete entry can be access at a single memory location and in the event that the entries are mapped vertically, the entries can be accessed at one or more memory locations.
摘要翻译：分组网络设备包括分组网络处理器存储器系统，用于存储用于处理和转发通过网络设备的信息分组的信息。该信息包含在查找表中，其表项可以水平地或垂直地映射到存储器系统中。在条目水平映射的情况下，可以在单个存储器位置访问完整条目，并且在条目垂直映射的情况下，可以在一个或多个存储器位置处访问条目。

2. 发明申请

US20130301640A9 METHOD & APPARATUS FOR THE DISTRIBUTION OF NETWORK TRAFFIC 有权
标题翻译：网络交通分配的方法与装置
公开(公告)号：US20130301640A9
公开(公告)日：2013-11-14
申请号：US13023303
申请日：2011-02-08
申请人： Krishnamurthy Subramanian , Kalpesh Zinjuwadia
发明人： Krishnamurthy Subramanian , Kalpesh Zinjuwadia
IPC分类号： H04L12/56
CPC分类号： H04L45/02
摘要： A packet network device, such as a router or switch, includes functionality that operates to receive network traffic, process the traffic as needed and to forward the traffic to its destination. Additionally, each router includes a weighted equal cost multipath routing function that operates to identify equal cost paths over which to forward the network traffic, to calculate a path weighting that is dependent upon the path bandwidth and to forward the traffic ingressing to it over each of the equal cost paths according to the calculated path weighting.
摘要翻译：分组网络设备（例如路由器或交换机）包括操作以接收网络流量的功能，根据需要处理流量并将流量转发到其目的地。另外，每个路由器包括加权的相等成本的多路径路由功能，其操作以识别用于转发网络流量的相同的成本路径，以计算取决于路径带宽的路径加权，并且将流量进入到根据计算的路径加权等成本路径。

3. 发明授权

US08345536B1 Multicast high availability enhancements for non-stop forwarding 有权
标题翻译：组播高可用性增强功能用于不间断转发
公开(公告)号：US08345536B1
公开(公告)日：2013-01-01
申请号：US12322159
申请日：2009-01-29
申请人： Srikanth Rao , Viswanathan Raman
发明人： Srikanth Rao , Viswanathan Raman
IPC分类号： G01R31/08
CPC分类号： H04L45/16 , H04L45/28 , H04L45/58 , H04L45/60 , H04L49/201 , H04L49/557
摘要： A distributed-forwarding router platform contains a master and a standby route processing manager (RPM). The master RPM uses dynamic internal routing codes to facilitate the replication of multicast packets within the router. As internal routing codes are assigned, the assignments are shared with the standby RPM. Should the standby RPM have to take over as the master RPM, the new master consults the internal routing codes assigned by the previous master as the new master builds multicast state, insuring that the internal routing codes the new master assigns are consistent with those used by the prior master. This allows the multicast forwarding plane to remain available during RPM failover, without a shutdown or unstable period while the new master RPM propagates internal routing codes. Other embodiments are also described and claimed.
摘要翻译：分布式转发路由器平台包含主站和备用路由处理管理器（RPM）。主RPM使用动态内部路由代码来促进路由器内组播数据包的复制。随着内部路由代码的分配，分配与备用RPM共享。如果备用RPM必须作为主RPM接管，则新的主设备将查询由先前主站分配的内部路由代码，因为新主站构建多播状态，确保新主站分配的内部路由代码与先前的主人。这允许组播转发平面在RPM故障转移期间保持可用，而不会关闭或不稳定周期，而新的主RPM传播内部路由代码。还描述和要求保护其他实施例。

4. 发明授权

US08243729B2 Multiple chassis stacking using front end ports 有权
标题翻译：使用前端口多台机箱堆叠
公开(公告)号：US08243729B2
公开(公告)日：2012-08-14
申请号：US12828514
申请日：2010-07-01
申请人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
发明人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
IPC分类号： H04L12/28
CPC分类号： H04L49/45 , H04L45/583 , H04L49/55
摘要： A stacked chassis comprising multiple physical switch/router chassis operates without any special stacking hardware or stacking channels. Instead, a stacking LAG is installed between front-end switch ports on the stacked chassis. The chassis controllers negotiate a master, which controls operation of all chassis in the stack. A stacked-chassis-wide port numbering scheme is used to distribute information to all line cards in the system. Each line card processes the information to distill physical-chassis significant information for operation of that chassis in the stack.
摘要翻译：包括多个物理交换机/路由器机箱的堆叠机架在没有任何特殊堆叠硬件或堆叠信道的情况下运行。相反，堆叠LAG安装在堆叠机箱的前端交换机端口之间。机箱控制器协商主机，控制堆叠中所有机箱的操作。堆叠式机箱范围的端口编号方案用于将信息分发给系统中的所有线路卡。每个线卡处理信息以提取物理机箱重要信息，以便堆叠中的该机箱的操作。

5. 发明申请

US20120201241A1 METHOD & APPARATUS FOR THE DISTRIBUTION OF NETWORK TRAFFIC 有权
标题翻译：网络交通分配的方法与装置
公开(公告)号：US20120201241A1
公开(公告)日：2012-08-09
申请号：US13023303
申请日：2011-02-08
申请人： Krishnamurthy Subramanian , Kalpesh Zinjuwadia
发明人： Krishnamurthy Subramanian , Kalpesh Zinjuwadia
IPC分类号： H04L12/56
CPC分类号： H04L45/02
摘要： A packet network device, such as a router or switch, includes functionality that operates to receive network traffic, process the traffic as needed and to forward the traffic to its destination. Additionally, each router includes a weighted equal cost multipath routing function that operates to identify equal cost paths over which to forward the network traffic, to calculate a path weighting that is dependent upon the path bandwidth and to forward the traffic ingressing to it over each of the equal cost paths according to the calculated path weighting.
摘要翻译：分组网络设备（例如路由器或交换机）包括操作以接收网络流量的功能，根据需要处理流量并将流量转发到其目的地。另外，每个路由器包括加权的相等成本的多路径路由功能，其操作以识别用于转发网络流量的相同的成本路径，以计算取决于路径带宽的路径加权，并且将流量进入到根据计算的路径加权等成本路径。

6. 发明授权

US08208377B2 MAC-address based virtual route aggregation 有权
标题翻译：基于MAC地址的虚拟路由聚合
公开(公告)号：US08208377B2
公开(公告)日：2012-06-26
申请号：US12732653
申请日：2010-03-26
申请人： Krishnamurthy Subramanian , Shivi Fotedar , Janardhnan Narasimhan
发明人： Krishnamurthy Subramanian , Shivi Fotedar , Janardhnan Narasimhan
IPC分类号： G01R31/08
CPC分类号： H04L45/54 , H04L45/04 , H04L45/66
摘要： An autonomous system includes at least some packet network devices that are capable of operating in a virtual route aggregation environment and some packet network devices that are not capable of operating in a virtual route aggregation environment. The autonomous system includes at least one egress border router, at least one aggregation router and at least one intermediate router. The egress border router uses an interior border gateway protocol to distribute a label message to the other routers in the autonomous system, the label message including a next hop MAC address associated with either an external router or the egress border router. The egress border router and the intermediate router using information included in the label message to contrast layer 2 table entries and the aggregation router using information included in the label message to construct a layer 3 table entry. The aggregation router receives a packet with a virtual prefix that corresponds to a virtual prefix in a list of virtual prefixes stored by the aggregation router, and routes the packet over a virtual path corresponding to one of the virtual prefixes.
摘要翻译：自治系统至少包括能够在虚拟路由聚合环境中操作的分组网络设备和不能在虚拟路由聚合环境中操作的一些分组网络设备。自治系统包括至少一个出口边界路由器，至少一个聚合路由器和至少一个中间路由器。出口边界路由器使用内部边界网关协议将标签消息分发到自治系统中的其他路由器，标签消息包括与外部路由器或出口边界路由器相关联的下一跳MAC地址。出口边界路由器和中间路由器使用标签消息中包含的信息来对比第二层表项和聚合路由器，使用包含在标签消息中的信息构建一个第三层表项。汇聚路由器接收到具有与聚合路由器存储的虚拟前缀列表中的虚拟前缀对应的虚拟前缀的分组，并通过与虚拟前缀之一相对应的虚拟路径进行路由。

7. 发明授权

US08194676B2 Streaming segmentation and reassembly in asynchronous transfer mode communications 有权
标题翻译：异步传输模式通信中的流分段和重组
公开(公告)号：US08194676B2
公开(公告)日：2012-06-05
申请号：US12643145
申请日：2009-12-21
申请人： Mark Sanders
发明人： Mark Sanders
IPC分类号： H04L12/28 , H04L12/56 , H04J3/24
CPC分类号： H04L12/5601
摘要： Systems, methods, and apparatuses are provided that enable streaming of ATM cells between a transmit/receive data processing application and a transmission convergence function. Data to be segmented into an ATM cell is received at a SAR engine, and provided to a transmission convergence function, with the first cells transmitted to the transmission convergence function before the SAR function receives an end-of-packet indication from the optimization engine. Data received at a transmission convergence function is placed in a received packet queue at the SAR function, with packets provided to an application after a start-of-packet indication is received, and before an end-of-packet indication is received, at the SAR function.
摘要翻译：提供了能够在发送/接收数据处理应用和传输收敛功能之间流送ATM信元的系统，方法和装置。在SAR引擎处接收要分割成ATM信元的数据，并提供给传输收敛功能，其中第一个信元在SAR功能从优化引擎接收到分组结束指示之前传输到传输收敛功能。以传输收敛功能接收的数据以SAR功能被放置在接收到的分组队列中，在接收到分组开始指示之后，并且在接收到分组结束指示之前提供给应用的分组在 SAR功能。

8. 发明授权

US08121205B1 Extended non-return-to-zero serial channel signaling 有权
标题翻译：扩展的无归零串行通道信令
公开(公告)号：US08121205B1
公开(公告)日：2012-02-21
申请号：US12077615
申请日：2008-03-20
申请人： Yi Zheng , Joel R. Goergen
发明人： Yi Zheng , Joel R. Goergen
IPC分类号： H04K1/10
CPC分类号： H04L25/4917 , H04L1/0063 , H04L25/4904 , H04L25/497
摘要： Methods and apparatus for serial channel operation are disclosed. An N+1-level signaling scheme is used to transmit N staggered but overlapping NRZ sub-sequences concurrently on a serial channel. Each sequence has a bit rate R and an essential bandwidth of R Hz. The combined bit rate of the channel is N×R, but due to a lack of correlation between the sub-sequences, the essential bandwidth remains approximately R Hz. The signaling scheme also contains redundancy that allows some errors to be detected and/or corrected. Other embodiments are also described and claimed.
摘要翻译：公开了串行通道操作的方法和装置。 N + 1级信令方案用于在串行信道上同时发送N个交错但重叠的NRZ子序列。每个序列具有比特率R和R Hz的必要带宽。信道的组合比特率为N×R，但是由于子序列之间缺乏相关性，基本带宽保持大致为R Hz。信令方案还包含允许检测和/或校正一些错误的冗余。还描述和要求保护其他实施例。

9. 发明申请

US20120039335A1 MULTICAST PACKET FORWARDING USING MULTIPLE STACKED CHASSIS 有权
标题翻译： MULTICAST PACKET FORMARDING USING MULTIPLE STACKED CHASSIS
公开(公告)号：US20120039335A1
公开(公告)日：2012-02-16
申请号：US12856342
申请日：2010-08-13
申请人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
发明人： Krishnamurthy Subramanian , Raja Jayakumar , Janardhanan P. Narasimhan
IPC分类号： H04L12/56
CPC分类号： H04L12/18 , H04L12/4641
摘要： A stacked chassis comprising multiple physical switch/router chassis operates without any special stacking hardware or stacking channels. Instead, a stacking LAG is installed between front-end switch ports on the stacked chassis. The chassis controllers negotiate a master, which controls operation of all chassis in the stack. A stacked-chassis-wide port numbering scheme is used to distribute information to all line cards in the system. Each line card processes the information to distill physical-chassis significant information for operation of that chassis in the stack.
摘要翻译：包括多个物理交换机/路由器机箱的堆叠机架在没有任何特殊堆叠硬件或堆叠信道的情况下运行。相反，堆叠LAG安装在堆叠机箱的前端交换机端口之间。机箱控制器协商主机，控制堆叠中所有机箱的操作。堆叠式机箱范围的端口编号方案用于将信息分发给系统中的所有线路卡。每个线卡处理信息以提取物理机箱重要信息，以便堆叠中的该机箱的操作。

10. 发明授权

US07630301B2 Method and apparatus for line and path selection within SONET/SDH based networks 有权
公开(公告)号：US07630301B2
公开(公告)日：2009-12-08
申请号：US11339246
申请日：2006-01-24
申请人： Mats Lund , Mingjun Zhang , Jim Mao
发明人： Mats Lund , Mingjun Zhang , Jim Mao
IPC分类号： H04J3/14
CPC分类号： H04J3/14 , H04J2203/0012 , H04J2203/0025 , H04J2203/0026 , H04J2203/006 , H04Q2213/13167 , H04Q2213/13367
摘要： A line level selection unit is described that selects signals from a backplane. The line level selection unit has a clock that times egress time slots associated with an egress network line coupled to the egress channel. The egress channel has a primary protection group table that correlates the egress time slots to a protection group for each ingress signal used to fill the egress time slots. The protection group table has an output coupled to a channel select input of a first multiplexer. The first multiplexer has input values that reflect the status of each protection group for each ingress signal. The first multiplexer has an output coupled to a channel select input of a second multiplexer. The second multiplexer receives a plurality of inputs from a plurality of tables that indicate where an ingress signal may be found on the backplane.

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