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1.发明授权Method and apparatus to control routing convergence during node reboot by entering a freeze state that inhibits routing convergence during the reboot process 有权通过在重启过程中输入禁止路由收敛的冻结状态来控制节点重启期间的路由收敛的方法和装置公开(公告)号：US09081567B1
公开(公告)日：2015-07-14
申请号：US13188356
申请日：2011-07-21
IPC分类号： G06F9/00 , G06F15/177 , H04L12/28 , G06F1/32
CPC分类号： G06F1/3203 , G06F1/3206
摘要： In one embodiment, a technique may enable control of routing convergence in a computer network during reboot of a node of a routing topology represented by a directed acyclic graph (DAG). The rebooting node, e.g., a DAG root node, may transmit a reboot notification message to nodes of the routing topology indicating that the rebooting node is unavailable during a subsequent reboot process. In response to receiving and processing the reboot notification message, the nodes of the routing topology may enter a DAG freeze state that inhibits (prevents) routing convergence in the routing topology during the reboot process so as prevent adverse consequences on network stability, such as collapse of the DAG. Thereafter upon completion of the reboot process, the rebooting node may transmit a clear message to the nodes of the routing topology that instructs the nodes to exit the DAG freeze state.
摘要翻译： 在一个实施例中，一种技术可以在由有向无环图（DAG）表示的路由拓扑的节点的重新启动期间能够控制计算机网络中的路由收敛。 重新启动节点（例如，DAG根节点）可以向路由拓扑的节点发送重新启动通知消息，指示重新启动节点在后续重新启动过程中不可用。 响应于接收和处理重新启动通知消息，路由拓扑的节点可能会在重新启动过程中进入禁止（防止）路由拓扑中的路由收敛的DAG冻结状态，以防止对网络稳定性的不利影响，例如崩溃 的DAG。 此后，在完成重新启动过程之后，重新启动节点可以向指示节点退出DAG冻结状态的路由拓扑的节点发送清除消息。
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公开(公告)号：US07995555B2
公开(公告)日：2011-08-09
申请号：US12731655
申请日：2010-03-25
申请人： Atul B Mahamuni
发明人： Atul B Mahamuni
IPC分类号： H04L12/28
摘要： A device stores forwarding information associated with fragments of a first data unit, stores information common to the fragments of the first data unit, receives fragments of a second data unit, and forwards the fragments of the second data unit based on the forwarding information of the first data unit and the information common to the first data unit.
摘要翻译： 设备存储与第一数据单元的片段相关联的转发信息，存储与第一数据单元的片段相同的信息，接收第二数据单元的片段，并且基于转发信息转发第二数据单元的片段 第一数据单元和第一数据单元共同的信息。
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公开(公告)号：US07715362B1
公开(公告)日：2010-05-11
申请号：US11944515
申请日：2007-11-23
申请人： Atul B. Mahamuni
发明人： Atul B. Mahamuni
IPC分类号： H04L12/28
摘要： A device stores forwarding information associated with fragments of a first data unit, stores information common to the fragments of the first data unit, receives fragments of a second data unit, and forwards the fragments of the second data unit based on the forwarding information of the first data unit and the information common to the first data unit.
摘要翻译： 设备存储与第一数据单元的片段相关联的转发信息，存储与第一数据单元的片段相同的信息，接收第二数据单元的片段，并且基于转发信息转发第二数据单元的片段 第一数据单元和第一数据单元共同的信息。
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4.发明授权Method and system for enabling a route and flow table update in a distributed routing platform 有权在分布式路由平台中启用路由和流表更新的方法和系统公开(公告)号：US06850492B2
公开(公告)日：2005-02-01
申请号：US10302709
申请日：2002-11-22
CPC分类号： H04L45/583 , H04L45/00 , H04L45/58 , H04L45/60 , Y10S707/99938
摘要： A system and method is directed to updating a route table in a distributed routing platform, thereby enabling multiple routing protocols to be executed on different routing modules. A slave route distributor on one routing module is configured to receive a route from a local route table and flow manager. The slave route distributor communicates the route to a master route distributor on another routing module by way of an inter process communications protocol. The master route distributor provides the route to its local route table and flow manager, where a determination is made whether the route is a best route. If the route is a best route, the master route distributor updates its external routing table. The master route distributor also distributes the route to another slave route distributor on yet another routing module, where the route enables an update to a remote routing protocol, and routing table.
摘要翻译： 系统和方法旨在更新分布式路由平台中的路由表，从而使得能够在不同的路由模块上执行多个路由协议。 一个路由模块上的从属路由分配器被配置为从本地路由表和流管理器接收路由。 从路由分配器通过进程间通信协议将路由传递到另一路由模块上的主路由分发器。 主路由分配器提供到其本地路由表和流管理器的路由，其中确定路由是否是最佳路由。 如果路由是最佳路由，则主路由分发器更新其外部路由表。 主路由分配器还将路由分配到另一路由模块上的另一个从属路由分发器，其中该路由能够更新远程路由协议和路由表。
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公开(公告)号：US09391878B2
公开(公告)日：2016-07-12
申请号：US13358130
申请日：2012-01-25
CPC分类号： H04L45/30 , H04L1/0086 , H04L1/1838 , H04L1/1877 , H04L1/1896 , H04L12/1868 , H04L41/0893 , H04L43/10 , H04L45/3065
摘要： In one embodiment, a device in a computer network establishes a reliable map that defines a set of packet criteria for which reliability is desired over an unreliable link to a peer device. In response to receiving a first packet from the peer device over the unreliable link, the device acknowledges the first packet to the peer device when the first packet matches the packet criteria of the reliable map. Also, in response to receiving a second packet destined via the peer device over the unreliable link, the device buffers the second packet when the second packet matches the packet criteria of the reliable map and retransmits the buffered second packet over the unreliable link to the peer device until acknowledged by the peer device.
摘要翻译： 在一个实施例中，计算机网络中的设备建立可靠的映射，其定义了通过对对等设备的不可靠链路来期望可靠性的一组分组标准。 响应于通过不可靠链路从对等设备接收到第一分组，当第一分组匹配可靠地图的分组标准时，设备向对等设备确认第一分组。 此外，响应于通过不可靠链路接收经由对等设备发送的第二分组，当第二分组与可靠映射的分组标准匹配时，设备缓冲第二分组，并且经由不可靠链路将对缓冲的第二分组重传到对等体 设备，直到对等设备确认。
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6.发明授权公开(公告)号：US08630177B2
公开(公告)日：2014-01-14
申请号：US13405828
申请日：2012-02-27
IPC分类号： G01R31/08
CPC分类号： H04L45/34 , H04L43/0876 , H04L45/12 , H04L45/14 , H04L45/16 , H04L45/22 , H04L45/38 , H04L45/48
摘要： In one embodiment, traffic flows through a root node of a primary directed acyclic graph (DAG) in a computer network are monitored to detect whether a particular traffic flow is above a path cost threshold. If so, then a corresponding source device may be instructed to cease using the primary DAG for the particular traffic flow, and specific action may be taken based on whether the particular traffic flow is point-to-point (P2P) or point-to-multipoint (P2MP). In particular, in response to the particular traffic flow being P2P, a source route may be computed and sent to the source device to cause the source device to use the source route for the particular traffic flow, while in response to the particular traffic flow being P2MP, the source device may be instructed to create a secondary DAG for the particular traffic flow with the source device as the secondary DAG root.
摘要翻译： 在一个实施例中，监视计算机网络中通过主要有向非循环图（DAG）的根节点的流量，以检测特定业务流是否高于路径开销阈值。 如果是，则可以指示对应的源设备停止对特定业务流使用主DAG，并且可以基于特定业务流是点对点（P2P）还是点对点（peer-to- 多点（P2MP）。 特别地，响应于特定业务流为P2P，可以计算源路由并将其发送到源设备，以使源设备使用用于特定业务流的源路由，同时响应于特定业务流 P2MP，可以指示源设备为源设备作为辅助DAG根创建用于特定业务流的辅助DAG。
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公开(公告)号：US20130188471A1
公开(公告)日：2013-07-25
申请号：US13358130
申请日：2012-01-25
IPC分类号： H04L12/24
CPC分类号： H04L45/30 , H04L1/0086 , H04L1/1838 , H04L1/1877 , H04L1/1896 , H04L12/1868 , H04L41/0893 , H04L43/10 , H04L45/3065
摘要： In one embodiment, a device in a computer network establishes a reliable map that defines a set of packet criteria for which reliability is desired over an unreliable link to a peer device. In response to receiving a first packet from the peer device over the unreliable link, the device acknowledges the first packet to the peer device when the first packet matches the packet criteria of the reliable map. Also, in response to receiving a second packet destined via the peer device over the unreliable link, the device buffers the second packet when the second packet matches the packet criteria of the reliable map and retransmits the buffered second packet over the unreliable link to the peer device until acknowledged by the peer device.
摘要翻译： 在一个实施例中，计算机网络中的设备建立可靠的映射，其定义了通过对对等设备的不可靠链路来期望可靠性的一组分组标准。 响应于通过不可靠链路从对等设备接收到第一分组，当第一分组匹配可靠地图的分组标准时，设备向对等设备确认第一分组。 此外，响应于通过不可靠链路接收经由对等设备发送的第二分组，当第二分组与可靠映射的分组标准匹配时，设备缓冲第二分组，并且经由不可靠链路将对缓冲的第二分组重传到对等体 设备，直到对等设备确认。
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公开(公告)号：US20110258335A1
公开(公告)日：2011-10-20
申请号：US13174184
申请日：2011-06-30
申请人： Atul B. MAHAMUNI
发明人： Atul B. MAHAMUNI
IPC分类号： G06F15/16
摘要： A device stores forwarding information associated with fragments of a first data unit, stores information common to the fragments of the first data unit, receives fragments of a second data unit, and forwards the fragments of the second data unit based on the forwarding information of the first data unit and the information common to the first data unit.
摘要翻译： 设备存储与第一数据单元的片段相关联的转发信息，存储与第一数据单元的片段相同的信息，接收第二数据单元的片段，并且基于转发信息转发第二数据单元的片段 第一数据单元和第一数据单元共同的信息。
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公开(公告)号：US20070230470A1
公开(公告)日：2007-10-04
申请号：US11606714
申请日：2006-11-29
申请人： Atul B. Mahamuni
发明人： Atul B. Mahamuni
IPC分类号： H04L12/56
CPC分类号： H04W88/14 , H04L63/0272 , H04W84/10 , H04W92/02
摘要： A system and method for implementing an overlay network architecture called a Virtual Collapsed Backbone (VCB) are described herein. In one embodiment, a VCB provides a framework for consolidating campus network service elements in a centralized fashion, instead of distributing them at the edges of the campus network. End stations create tunnels to a new type of network device called Network Junction Point (NJP) located in the campus network and the NJP steers the traffic through service elements selected based on the traffic steering policy. Other methods and apparatuses are also described.
摘要翻译： 本文描述了一种用于实现称为虚拟折叠骨干（VCB）的覆盖网络架构的系统和方法。 在一个实施例中，VCB提供了以集中方式整合校园网络服务元件的框架，而不是将它们分布在校园网络的边缘。 终端站建立到位于园区网络中的称为网络连接点（NJP）的新型网络设备的隧道，并且NJP通过基于流量指导策略选择的服务元素来引导流量。 还描述了其它方法和装置。
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10.发明授权Method and system for synchronizing a standby route distributor in a distributed routing platform 有权用于在分布式路由平台中同步备用路由分发器的方法和系统公开(公告)号：US07230914B2
公开(公告)日：2007-06-12
申请号：US10424222
申请日：2003-04-25
申请人： Ramkumar Sankar , Sreeram P. Iyer , Sachchidanand D. Vaidya , Vijay K. Chander , Atul B. Mahamuni , Henry Hong-Yi Tzeng
发明人： Ramkumar Sankar , Sreeram P. Iyer , Sachchidanand D. Vaidya , Vijay K. Chander , Atul B. Mahamuni , Henry Hong-Yi Tzeng
CPC分类号： H04L45/583 , H04L45/00 , H04L45/58 , H04L45/60 , Y10S707/99938
摘要： A system and method is directed to synchronizing a standby route distributor in a distributed routing platform. A route distributor is configured to operate as an active route distributor. Another route distributor is configured to operate as a standby route distributor. The standby and active route distributor may reside in the same or a different distributed routing platform. A slave route distributor communicates a route to the active route distributor. The active route distributor may update its routing tables with the route. The active route distributor forwards the route to the standby route distributor to enable their routing tables to be substantially synchronized. The standby route distributor distributes the route to the slave route distributors, where the route enables an update to another routing table. In the event of a switchover, the standby route distributor resynchronizes its routing tables and may distribute route information to each slave route distributor.
摘要翻译： 系统和方法旨在使分布式路由平台中的备用路由分发器同步。 路由分配器被配置为作为主动路由分配器操作。 另一个路由分配器被配置为作为备用路由分配器操作。 备用和主动路由分配器可以驻留在相同或不同的分布式路由平台中。 从路由分配器将路由器传送到主动路由分配器。 主动路由分配器可以使用路由更新其路由表。 主动路由分发器将路由器转发到备用路由分发器，以使其路由表基本上同步。 备用路由分配器将路由器分发到从属路由分配器，其中路由使得能够更新到另一路由表。 在切换的情况下，备用路由分配器重新同步其路由表，并且可以将路由信息分发给每个从属路由分发者。
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