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1. 发明授权

US08867408B2 Fast convergence on child link failures and weighted load balancing of aggregate ethernet/sonet bundles 有权
标题翻译：子链路故障和聚合以太网/ sonet束的加权负载平衡的快速收敛
公开(公告)号：US08867408B2
公开(公告)日：2014-10-21
申请号：US13561422
申请日：2012-07-30
申请人： Nitin Kumar , Alex Baban , Alok Khambatkone
发明人： Nitin Kumar , Alex Baban , Alok Khambatkone
IPC分类号： H04L1/00 , H04J1/16 , G08C15/00 , G06F11/00 , G01R31/08
CPC分类号： H04J3/1611 , H04L45/245 , H04L45/60 , H04L49/1515 , H04L49/557 , Y02D50/30
摘要： A network device provides a selector list that includes indices of child nexthops associated with the network device, where each of the child nexthops is associated with a corresponding child link provided in an aggregated bundle of child links. The network device also receives an indication of a failure of a child link in the aggregated bundle of child links, and removes, from the selector list, an index of a child nexthop associated with the failed child link. The network device further receives probabilities associated with the child links of the aggregated bundle of child links. Each of the probabilities indicates a probability of a packet exiting the network device on a child link. The network device also creates a distribution table based on the probabilities associated with the child links, and rearranges values provided in the distribution table.
摘要翻译：网络设备提供选择器列表，其包括与网络设备相关联的儿童下一代的索引，其中每个子下游商店与在聚合的子链路组中提供的对应的子链接相关联。所述网络设备还接收所述聚合的子链路束中的子链路的故障的指示，并从所述选择器列表中移除与所述失败的子链接相关联的子下一跳的索引。网络设备进一步接收与聚合的子链路捆绑的子链路相关联的概率。每个概率表示在子链路上离开网络设备的分组的概率。网络设备还基于与子链路相关联的概率创建分发表，并重新排列分发表中提供的值。

2. 发明授权

US08077726B1 Fast reroute for multiple label switched paths sharing a single interface 有权
标题翻译：快速重路由多个标签交换路径共享一个接口
公开(公告)号：US08077726B1
公开(公告)日：2011-12-13
申请号：US12391859
申请日：2009-02-24
申请人： Nitin Kumar , Alex Baban
发明人： Nitin Kumar , Alex Baban
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L41/0893 , H04L45/22 , H04L45/28 , H04L45/50 , H04L45/507 , H04L45/52 , H04W8/18 , H04W40/00 , H04W88/16
摘要： Techniques are described for maintaining a forwarding information base (FIB) within a packet-forwarding engine (PFE) of a router, and programming a packet-forwarding integrated circuit (IC) with a hardware version of the FIB. Entries of the hardware version identify primary forwarding next hops and backup forwarding next hops for the LSPs, wherein the packet-forwarding IC includes a control logic module and internal selector block configured to produce a value indicating a state of the first physical link. The selector block outputs one of the primary forwarding next hop and the backup forwarding next hop of the entries for forwarding the MPLS packets based on the value in response to the packet-processing engine addressing one of the entries of the FIB for the LSPs. Packets are forwarded with the PFE to the one of the primary forwarding next hop and the backup forwarding next hop output by the selector block.
摘要翻译：描述了用于在路由器的分组转发引擎（PFE）内维护转发信息库（FIB）的技术，并且利用FIB的硬件版本来编程分组转发集成电路（IC）。硬件版本的条目识别LSP的主转发下一跳和后续转发，其中分组转发IC包括控制逻辑模块和内部选择器块，其被配置为产生指示第一物理链路的状态的值。选择器块输出主要转发下一跳和用于转发MPLS分组的条目的备用转发下一跳，该响应于响应于分组处理引擎寻址用于LSP的FIB的条目中的一个的值。分组与PFE一起转发到主转发下一跳和选择器块下一跳输出的备份转发。

3. 发明申请

US20120300674A1 FAST CONVERGENCE ON CHILD LINK FAILURES AND WEIGHTED LOAD BALANCING OF AGGREGATE ETHERNET/SONET BUNDLES 有权
标题翻译：儿童链路失败和加权以太网/ SONET套装的加权负载平衡的快速收敛
公开(公告)号：US20120300674A1
公开(公告)日：2012-11-29
申请号：US13561422
申请日：2012-07-30
申请人： Nitin Kumar , Alex Baban , Alok Khambatkone
发明人： Nitin Kumar , Alex Baban , Alok Khambatkone
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04J3/1611 , H04L45/245 , H04L45/60 , H04L49/1515 , H04L49/557 , Y02D50/30
摘要： A network device provides a selector list that includes indices of child nexthops associated with the network device, where each of the child nexthops is associated with a corresponding child link provided in an aggregated bundle of child links. The network device also receives an indication of a failure of a child link in the aggregated bundle of child links, and removes, from the selector list, an index of a child nexthop associated with the failed child link. The network device further receives probabilities associated with the child links of the aggregated bundle of child links. Each of the probabilities indicates a probability of a packet exiting the network device on a child link. The network device also creates a distribution table based on the probabilities associated with the child links, and rearranges values provided in the distribution table.
摘要翻译：网络设备提供选择器列表，其包括与网络设备相关联的儿童下一代的索引，其中每个子下游商店与在聚合的子链路组中提供的对应的子链接相关联。所述网络设备还接收所述聚合的子链路束中的子链路的故障的指示，并从所述选择器列表中移除与所述失败的子链接相关联的子下一跳的索引。网络设备进一步接收与聚合的子链路捆绑的子链路相关联的概率。每个概率表示在子链路上离开网络设备的分组的概率。网络设备还基于与子链路相关联的概率创建分发表，并重新排列分发表中提供的值。

4. 发明申请

US20110164872A1 FAST CONVERGENCE ON CHILD LINK FAILURES AND WEIGHTED LOAD BALANCING OF AGGREGATE ETHERNET/SONET BUNDLES 有权
标题翻译：儿童链路失败和加权以太网/ SONET套装的加权负载平衡的快速收敛
公开(公告)号：US20110164872A1
公开(公告)日：2011-07-07
申请号：US12683656
申请日：2010-01-07
申请人： Nitin KUMAR , Alex BABAN , Alok KHAMBATKONE
发明人： Nitin KUMAR , Alex BABAN , Alok KHAMBATKONE
IPC分类号： H04J14/00 , H04B10/08
CPC分类号： H04J3/1611 , H04L45/245 , H04L45/60 , H04L49/1515 , H04L49/557 , Y02D50/30
摘要： A network device provides a selector list that includes indices of child nexthops associated with the network device, where each of the child nexthops is associated with a corresponding child link provided in an aggregated bundle of child links. The network device also receives an indication of a failure of a child link in the aggregated bundle of child links, and removes, from the selector list, an index of a child nexthop associated with the failed child link. The network device further receives probabilities associated with the child links of the aggregated bundle of child links. Each of the probabilities indicates a probability of a packet exiting the network device on a child link. The network device also creates a distribution table based on the probabilities associated with the child links, and rearranges values provided in the distribution table.
摘要翻译：网络设备提供选择器列表，其包括与网络设备相关联的儿童下一代的索引，其中每个子下游商店与在聚合的子链路组中提供的对应的子链接相关联。所述网络设备还接收所述聚合的子链路束中的子链路的故障的指示，并从所述选择器列表中移除与所述失败的子链接相关联的子下一跳的索引。网络设备进一步接收与聚合的子链路捆绑的子链路相关联的概率。每个概率表示在子链路上离开网络设备的分组的概率。网络设备还基于与子链路相关联的概率创建分发表，并重新排列分发表中提供的值。

5. 发明授权

US08917729B1 Fast reroute for multiple label switched paths sharing a single interface 有权
标题翻译：快速重路由多个标签交换路径共享一个接口
公开(公告)号：US08917729B1
公开(公告)日：2014-12-23
申请号：US13315119
申请日：2011-12-08
申请人： Nitin Kumar , Alex Baban
发明人： Nitin Kumar , Alex Baban
IPC分类号： H04L12/28 , H04W88/16 , H04L12/701 , H04L12/781 , H04L12/24 , H04W8/18 , H04W40/00 , H04L12/723
CPC分类号： H04L45/00 , H04L41/0893 , H04L45/22 , H04L45/28 , H04L45/50 , H04L45/507 , H04L45/52 , H04W8/18 , H04W40/00 , H04W88/16
摘要： Techniques are described for maintaining a forwarding information base (FIB) within a packet-forwarding engine (PFE) of a router, and programming a packet-forwarding integrated circuit (IC) with a hardware version of the FIB. Entries of the hardware version identify primary forwarding next hops and backup forwarding next hops for the LSPs, wherein the packet-forwarding IC includes a control logic module and internal selector block configured to produce a value indicating a state of the first physical link. The selector block outputs one of the primary forwarding next hop and the backup forwarding next hop of the entries for forwarding the MPLS packets based on the value in response to the packet-processing engine addressing one of the entries of the FIB for the LSPs. Packets are forwarded with the PFE to the one of the primary forwarding next hop and the backup forwarding next hop output by the selector block.
摘要翻译：描述了用于在路由器的分组转发引擎（PFE）内维护转发信息库（FIB）的技术，并且利用FIB的硬件版本来编程分组转发集成电路（IC）。硬件版本的条目识别LSP的主转发下一跳和后续转发，其中分组转发IC包括控制逻辑模块和内部选择器块，其被配置为产生指示第一物理链路的状态的值。选择器块输出主要转发下一跳和用于转发MPLS分组的条目的备用转发下一跳，该响应于响应于分组处理引擎寻址用于LSP的FIB的条目中的一个的值。分组与PFE一起转发到主转发下一跳和选择器块下一跳输出的备份转发。

6. 发明授权

US08254270B2 Fast convergence on child link failures and weighted load balancing of aggregate ethernet/SONET bundles 有权
标题翻译：子链路故障和聚合以太网/ SONET束的加权负载平衡的快速收敛
公开(公告)号：US08254270B2
公开(公告)日：2012-08-28
申请号：US12683656
申请日：2010-01-07
申请人： Nitin Kumar , Alex Baban , Alok Khambatkone
发明人： Nitin Kumar , Alex Baban , Alok Khambatkone
IPC分类号： H04L12/28 , H04J14/00 , H04B10/08
CPC分类号： H04J3/1611 , H04L45/245 , H04L45/60 , H04L49/1515 , H04L49/557 , Y02D50/30
摘要： A network device provides a selector list that includes indices of child nexthops associated with the network device, where each of the child nexthops is associated with a corresponding child link provided in an aggregated bundle of child links. The network device also receives an indication of a failure of a child link in the aggregated bundle of child links, and removes, from the selector list, an index of a child nexthop associated with the failed child link. The network device further receives probabilities associated with the child links of the aggregated bundle of child links. Each of the probabilities indicates a probability of a packet exiting the network device on a child link. The network device also creates a distribution table based on the probabilities associated with the child links, and rearranges values provided in the distribution table.
摘要翻译：网络设备提供选择器列表，其包括与网络设备相关联的儿童下一代的索引，其中每个子下游商店与在聚合的子链路组中提供的对应的子链接相关联。所述网络设备还接收所述聚合的子链路束中的子链路的故障的指示，并从所述选择器列表中移除与所述失败的子链接相关联的子下一跳的索引。网络设备进一步接收与聚合的子链路捆绑的子链路相关联的概率。每个概率表示在子链路上离开网络设备的分组的概率。网络设备还基于与子链路相关联的概率创建分发表，并重新排列分发表中提供的值。

7. 发明申请

US20110194557A1 DATA STRUCTURE-LESS DISTRIBUTED FABRIC MULTICAST 有权
标题翻译：数据结构不足分布式织物
公开(公告)号：US20110194557A1
公开(公告)日：2011-08-11
申请号：US12702718
申请日：2010-02-09
申请人： Alex Baban , Jean-Marc Frailong , Kireeti Kompella , Nitin Kumar , Jamsheed Wania , Murtuza Attarwala
发明人： Alex Baban , Jean-Marc Frailong , Kireeti Kompella , Nitin Kumar , Jamsheed Wania , Murtuza Attarwala
IPC分类号： H04L12/56
CPC分类号： H04L12/18 , H04L45/16 , H04L49/10 , H04L49/201
摘要： A network device receives a packet with a multicast nexthop identifier, and creates a mask that includes addresses of egress packet forwarding engines, of the network device, to which to provide the packet. The network device divides the mask into two portions, generates two copies of the packet, provides a first portion of the mask in a first copy of the packet, and provides a second portion of the mask in a second copy of the packet. The network device also forwards the first copy of the packet to an address of a first egress packet forwarding engine provided in the first portion of the mask, and forwards the second copy of the packet to an address of a second egress packet forwarding engine provided in the second portion of the mask.
摘要翻译：网络设备接收具有多播下一标识符的分组，并创建包括提供分组的网络设备的出站分组转发引擎的地址的掩码。网络设备将掩码分成两部分，生成分组的两个副本，在分组的第一副本中提供该掩码的第一部分，并在分组的第二副本中提供该掩码的第二部分。网络设备还将分组的第一副本转发到在掩码的第一部分中提供的第一出口分组转发引擎的地址，并将分组的第二副本转发到提供的第二出口分组转发引擎的地址掩模的第二部分。

8. 发明授权

US08325726B2 Data structure-less distributed fabric multicast 有权
标题翻译：无数据结构的分布式组播
公开(公告)号：US08325726B2
公开(公告)日：2012-12-04
申请号：US12702718
申请日：2010-02-09
申请人： Alex Baban , Jean-Marc Frailong , Kireeti Kompella , Nitin Kumar , Jamsheed Wania , Murtuza Attarwala
发明人： Alex Baban , Jean-Marc Frailong , Kireeti Kompella , Nitin Kumar , Jamsheed Wania , Murtuza Attarwala
IPC分类号： H04L12/56 , H04J3/26
CPC分类号： H04L12/18 , H04L45/16 , H04L49/10 , H04L49/201
摘要： A network device receives a packet with a multicast nexthop identifier, and creates a mask that includes addresses of egress packet forwarding engines, of the network device, to which to provide the packet. The network device divides the mask into two portions, generates two copies of the packet, provides a first portion of the mask in a first copy of the packet, and provides a second portion of the mask in a second copy of the packet. The network device also forwards the first copy of the packet to an address of a first egress packet forwarding engine provided in the first portion of the mask, and forwards the second copy of the packet to an address of a second egress packet forwarding engine provided in the second portion of the mask.
摘要翻译：网络设备接收具有多播下一标识符的分组，并创建包括提供分组的网络设备的出站分组转发引擎的地址的掩码。网络设备将掩码分成两部分，生成分组的两个副本，在分组的第一副本中提供该掩码的第一部分，并在分组的第二副本中提供该掩码的第二部分。网络设备还将分组的第一副本转发到在掩码的第一部分中提供的第一出口分组转发引擎的地址，并将分组的第二副本转发到提供的第二出口分组转发引擎的地址掩模的第二部分。

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