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公开(公告)号：US08953432B2
公开(公告)日：2015-02-10
申请号：US11147491
申请日：2005-06-08
申请人： Furquan Ahmed Ansari , Martin Havemann , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
发明人： Furquan Ahmed Ansari , Martin Havemann , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
IPC分类号： G06F11/00 , H04L12/721 , H04L12/751 , H04L12/707 , H04L12/703 , H04L12/773
摘要： A dynamic binding protocol has three tasks that run in parallel: discovery, association, and operation. During discovery, control elements (CEs) and forwarding elements (FEs) learn about immediate neighbors and CEs in a SoftRouter network that has separate control and data planes. During association, FEs associate with CEs and are configured with basic parameters, such as IP interface addresses, hostnames, and the like. During operation, failover and packet tunneling between CEs and FEs is handled.
摘要翻译： 动态绑定协议具有并行运行的三个任务：发现，关联和操作。 在发现期间，控制元件（CE）和转发元件（FE）可以了解具有单独控制和数据平面的SoftRouter网络中的直接邻居和CE。 在关联期间，FE与CE相关联，并配置有基本参数，如IP接口地址，主机名等。 在操作期间，处理CE和FE之间的故障转移和数据包隧道。
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公开(公告)号：US20120281520A1
公开(公告)日：2012-11-08
申请号：US13290633
申请日：2011-11-07
申请人： Furquan Ahmed Ansari , Martin Havemann , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
发明人： Furquan Ahmed Ansari , Martin Havemann , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
摘要： A SoftRouter architecture deconstructs routers by separating the control entities of a router from its forwarding components, enabling dynamic binding between them. In the SoftRouter architecture, control plane functions are aggregated and implemented on a few smart servers which control forwarding elements that are multiple network hops away. A dynamic binding protocol performs network-wide control plane failovers. Network stability is improved by aggregating and remotely hosting routing protocols, such as OSPF and BGP. This results in faster convergence, lower protocol messages processed, and fewer route changes following a failure. The SoftRouter architecture includes a few smart control entities that manage a large number of forwarding elements to provide greater support for network-wide control. In the SoftRouter architecture, routing protocols operate remotely at a control element and control one or more forwarding elements by downloading the forwarding tables, etc. into the forwarding elements. Intra-domain routing and inter-domain routing are also included.
摘要翻译： SoftRouter架构通过将路由器的控制实体与其转发组件分离来解构路由器，从而实现它们之间的动态绑定。 在SoftRouter架构中，控制平面功能在几个智能服务器上进行聚合和实现，这些智能服务器控制多个网络跳转的转发元素。 动态绑定协议执行网络范围的控制平面故障转移。 通过聚合和远程托管路由协议（如OSPF和BGP）来提高网络的稳定性。 这导致更快的收敛，更低的协议消息被处理，并且在故障之后更少的路由改变。 SoftRouter架构包括几个智能控制实体，它们管理大量转发元素，为网络范围的控制提供更大的支持。 在SoftRouter架构中，路由协议在控制元件上进行远程操作，并通过将转发表等下载到转发元件中来控制一个或多个转发元素。 还包括域内路由和域间路由。
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公开(公告)号：US09100266B2
公开(公告)日：2015-08-04
申请号：US11147665
申请日：2005-06-08
申请人： Furquan Ahmed Ansari , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
发明人： Furquan Ahmed Ansari , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
IPC分类号： H04L12/701 , H04L12/70
CPC分类号： H04L45/00 , H04L2012/5627
摘要： The SoftRouter architecture separates the implementation of control plane functions from packet forwarding functions. In this architecture, all control plane functions are implemented on general purpose servers called the control elements (CEs) that may be multiple hops away from the forwarding elements (FEs). A network element (NE) or a router is formed using dynamic binding between the CEs and the FEs. There is a protocol failover mechanism for handling failovers initiated by FEs to transfer control from one CE to another CE.
摘要翻译： SoftRouter架构将控制平面功能的实现与数据包转发功能分开。 在这种架构中，所有控制平面功能都在通用服务器上实现，称为可能与转发元件（FE）之间多跳的控制元件（CE）。 使用CE和FE之间的动态绑定形成网元（NE）或路由器。 有一个协议故障转移机制，用于处理FE发起的故障转移，将控制从一个CE传输到另一个CE。
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公开(公告)号：US08432787B2
公开(公告)日：2013-04-30
申请号：US13290633
申请日：2011-11-07
申请人： Furquan Ahmed Ansari , Martin Havemann , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
发明人： Furquan Ahmed Ansari , Martin Havemann , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
摘要： A SoftRouter architecture deconstructs routers by separating the control entities of a router from its forwarding components, enabling dynamic binding between them. In the SoftRouter architecture, control plane functions are aggregated and implemented on a few smart servers which control forwarding elements that are multiple network hops away. A dynamic binding protocol performs network-wide control plane failovers. Network stability is improved by aggregating and remotely hosting routing protocols, such as OSPF and BGP. This results in faster convergence, lower protocol messages processed, and fewer route changes following a failure. The SoftRouter architecture includes a few smart control entities that manage a large number of forwarding elements to provide greater support for network-wide control. In the SoftRouter architecture, routing protocols operate remotely at a control element and control one or more forwarding elements by downloading the forwarding tables, etc. into the forwarding elements. Intra-domain routing and inter-domain routing are also included.
摘要翻译： SoftRouter架构通过将路由器的控制实体与其转发组件分离来解构路由器，从而实现它们之间的动态绑定。 在SoftRouter架构中，控制平面功能在几个智能服务器上进行聚合和实现，这些智能服务器控制多个网络跳转的转发元素。 动态绑定协议执行网络范围的控制平面故障转移。 通过聚合和远程托管路由协议（如OSPF和BGP）来提高网络的稳定性。 这导致更快的收敛，更低的协议消息被处理，并且在故障之后更少的路由改变。 SoftRouter架构包括几个智能控制实体，它们管理大量转发元素，为网络范围的控制提供更大的支持。 在SoftRouter架构中，路由协议在控制元件上进行远程操作，并通过将转发表等下载到转发元件中来控制一个或多个转发元素。 还包括域内路由和域间路由。
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公开(公告)号：US08068408B2
公开(公告)日：2011-11-29
申请号：US11147472
申请日：2005-06-08
申请人： Furquan Ahmed Ansari , Martin Havemann , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
发明人： Furquan Ahmed Ansari , Martin Havemann , Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Y. Woo
摘要： A SoftRouter architecture deconstructs routers by separating the control entities of a router from its forwarding components, enabling dynamic binding between them. In the SoftRouter architecture, control plane functions are aggregated and implemented on a few smart servers which control forwarding elements that are multiple network hops away. A dynamic binding protocol performs network-wide control plane failovers. Network stability is improved by aggregating and remotely hosting routing protocols, such as OSPF and BGP. This results in faster convergence, lower protocol messages processed, and fewer route changes following a failure. The SoftRouter architecture includes a few smart control entities that manage a large number of forwarding elements to provide greater support for network-wide control. In the SoftRouter architecture, routing protocols operate remotely at a control element and control one or more forwarding elements by downloading the forwarding tables, etc. into the forwarding elements. Intra-domain routing and inter-domain routing are also included.
摘要翻译： SoftRouter架构通过将路由器的控制实体与其转发组件分离来解构路由器，从而实现它们之间的动态绑定。 在SoftRouter架构中，控制平面功能在几个智能服务器上进行聚合和实现，这些智能服务器控制多个网络跳转的转发元素。 动态绑定协议执行网络范围的控制平面故障转移。 通过聚合和远程托管路由协议（如OSPF和BGP）来提高网络的稳定性。 这导致更快的收敛，更低的协议消息被处理，并且在故障之后更少的路由更改。 SoftRouter架构包括几个智能控制实体，它们管理大量转发元素，为网络范围的控制提供更大的支持。 在SoftRouter架构中，路由协议在控制元件上进行远程操作，并通过将转发表等下载到转发元件中来控制一个或多个转发元素。 还包括域内路由和域间路由。
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6.发明授权Inter-FE MPLS LSP mesh network for switching and resiliency in SoftRouter architecture 失效MPLS-MPLS网络网络，用于SoftRouter架构中的切换和弹性公开(公告)号：US07680113B2
公开(公告)日：2010-03-16
申请号：US11313056
申请日：2005-12-20
申请人： Furquan Ahmed Ansari
发明人： Furquan Ahmed Ansari
IPC分类号： H04L12/56
CPC分类号： H04L12/4633 , H04L45/50
摘要： Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) tunnels provide protection and a switching mechanism between forwarding elements (FEs) and a control element (CE) for control and data traffic in a SoftRouter network.
摘要翻译： 多协议标签交换（MPLS）标签交换路径（LSP）隧道为SoftRouter网络中的控制和数据流量提供转发元素（FE）和控制元素（CE）之间的保护和切换机制。
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7.发明申请Method and Apparatus for Preventing IP Datagram Fragmentation and Reassembly 审中-公开防止IP数据报分段和重组的方法和装置公开(公告)号：US20080159150A1
公开(公告)日：2008-07-03
申请号：US11616988
申请日：2006-12-28
申请人： Furquan Ahmed Ansari
发明人： Furquan Ahmed Ansari
IPC分类号： H03K7/08
摘要： The invention includes methods for controlling transmission of a plurality of packets from a sending device to a receiving device. A first method includes determining an expected path for a packet having associated with it a packet size, determining a Media Transmission Unit (MTU) size for the expected path, and, in response to a determination that the packet size is greater than the MTU size, propagating to the sending device a message adapted to reduce packet sizes of subsequent packets to be less than or equal to the MTU size. Other methods include generating a link state advertisement (LSA) for a link including a link TLV having a sub-TVL conveying MTU information associated with the link, transmitting the LSA toward a router, receiving the LSA at the router, and updating a table entry associated with the link using the MTU information conveyed by the sub-TLV.
摘要翻译： 本发明包括用于控制从发送设备到接收设备的多个分组的传输的方法。 第一种方法包括确定具有与其相关联的分组大小的分组的预期路径，确定预期路径的媒体传输单元（MTU）大小，并且响应于确定分组大小大于MTU大小 向发送设备传播适于将后续分组的分组大小减小到小于或等于MTU大小的消息。 其他方法包括生成链路的链路状态通告（LSA），链路包括具有传送与链路相关的MTU信息的子TVL的链路TLV，向路由器发送LSA，在路由器处接收LSA，更新表条目 使用由子TLV传送的MTU信息与链路相关联。
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