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公开(公告)号：US09014181B2
公开(公告)日：2015-04-21
申请号：US11147937
申请日：2005-06-08
IPC分类号： H04L12/50 , H04L12/703 , H04L12/715 , H04L12/721 , H04L12/707 , H04L12/773
CPC分类号： H04L45/28 , H04L45/04 , H04L45/123 , H04L45/22 , H04L45/60
摘要： An embodiment of the exemplary SoftRouter architecture includes two physically separate networks, a control plane network and a data plane network. The data plane network is one physical network for the data traffic, while the control plane network is another physical network for the control traffic. The topology of the data plane network is made up of interconnected forwarding elements (FEs). The topology of the control plane network is made up interconnected control elements (CEs). This physical independence of the control plane network from the data plane network provides for a secure mechanism to communicate among the CEs in the control plane network. In addition, this physical independence provides improved reliability and improved scalability, when compared to the traditional router architecture, where control plane message are in-band with the data plane.
摘要翻译： 示例性SoftRouter架构的实施例包括两个物理上分离的网络，控制平面网络和数据平面网络。 数据平面网络是数据流量的一个物理网络，而控制平面网络则是控制流量的另一个物理网络。 数据平面网络的拓扑结构由互连转发元素（FE）组成。 控制平面网络的拓扑结构由互连的控制元件（CE）组成。 控制平面网络与数据平面网络的这种物理独立性为安全机制提供了在控制平面网络中的CE之间进行通信。 此外，与传统路由器架构相比，这种物理独立性提供了改进的可靠性和改进的可扩展性，其中控制平面消息与数据平面内嵌。
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公开(公告)号：US08996722B2
公开(公告)日：2015-03-31
申请号：US11147768
申请日：2005-06-08
IPC分类号： G06F15/173 , H04L12/701 , H04L12/931
CPC分类号： H04L45/00 , H04L49/602
摘要： A network architecture includes one or more feature servers and control servers in a control plane that is logically separate from a data plane that includes forwarding elements. Feature servers facilitate adding network-based functionality in a centralized way that is has better scalability than the traditional router architecture. Some examples of network-based functionality are voice over IP, enhancing QoS support, scaling BGP route reflectors, network-based VPN support, scaling mobile IP support, introducing IPv6 into existing and future networks, and enhancing end-to-end network security. Feature servers remove complexity from routers, allow functions to be implemented on a standard-off-the-shelf server platform, facilitate easy introduction of value-added functions, and scale well.
摘要翻译： 网络架构包括控制平面中的一个或多个特征服务器和控制服务器，逻辑上与包括转发元件的数据平面分离。 功能服务器便于以比传统路由器架构更好的可扩展性的集中方式添加基于网络的功能。 基于网络的功能的一些示例是IP语音，增强QoS支持，扩展BGP路由反射器，基于网络的VPN支持，扩展移动IP支持，将IPv6引入现有和未来的网络，以及增强端到端网络安全性。 功能服务器消除了路由器的复杂性，允许在标准的现成服务器平台上实现功能，便于简单的引入增值功能，并扩展好。
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公开(公告)号：US07715382B2
公开(公告)日：2010-05-11
申请号：US11147642
申请日：2005-06-08
申请人： Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Krishan K. Sabnani , Thomas Y. Woo
发明人： Tirunell V. Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Krishan K. Sabnani , Thomas Y. Woo
IPC分类号： H04L12/56
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. The flexibility of the SoftRouter architecture over conventional routers with collocated and tightly integrated control and forwarding functions results in increased reliability, increased scalability, increased security, ease of adding new functionality, and decreased cost.
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。 SoftRouter架构与具有并置且紧密集成的控制和转发功能的传统路由器的灵活性相结合，可提高可靠性，增加可扩展性，增加安全性，增加新功能以及降低成本。
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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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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：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：US09077482B2
公开(公告)日：2015-07-07
申请号：US13852328
申请日：2013-03-28
IPC分类号： H04J14/02 , H04L12/721 , H04L12/715 , H04L12/727
CPC分类号： H04J14/0284 , H04J14/0201 , H04J14/0227 , H04J14/0257 , H04J14/0267 , H04L45/121 , H04L45/62 , H04L45/64
摘要： An optical routing scheme in which an optical network having a mesh topology is configured to route optical packets through an optical routing layout superimposable with the mesh topology, but having a star-like topology. Using this routing layout, the optical network can be configured to transport optical packets from respective ingress nodes, through the hub node located at the star center, to respective egress nodes in a manner that enables a data throughput that approaches the theoretical capacity. No special hardware is required for implementing the hub functionality, and any node of the optical network can be configured to serve as the hub node. The latter feature enables relatively straightforward optimization of the optical routing layout and transmission schedule, e.g., by changing the identity of the hub node and adjusting the transmission schedule at the ingress nodes to synchronize packet arrivals to the hub node.
摘要翻译： 一种光路由方案，其中具有网状拓扑的光网络被配置为通过与网状拓扑重叠但具有星形拓扑的光路由布局路由光分组。 使用该路由布局，光网络可以被配置为以使得能够接近理论容量的数据吞吐量的方式将来自相应入口节点的光分组传输到位于星中心的集线器节点到相应出口节点。 实现集线器功能不需要特殊硬件，光网络的任何节点都可以配置为集线器节点。 后者的特征使得可以例如通过改变集线器节点的身份并调整入口节点处的传输调度以使分组到达中心到集线器节点而使光路由布局和传输调度相对简单的优化。
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10.发明申请NETWORK DETECTION OF REAL-TIME APPLICATIONS USING INCREMENTAL LINEAR REGRESSION 有权使用增量线性回归的网络检测实时应用公开(公告)号：US20100329133A1
公开(公告)日：2010-12-30
申请号：US12495236
申请日：2009-06-30
IPC分类号： H04L12/26
CPC分类号： H04L41/5019 , H04L41/5087 , H04L41/509 , H04L43/026
摘要： Method and apparatus using incremental linear regression to derive a traffic flow signature indicative of a particular application within a packet stream.
摘要翻译： 使用增量线性回归的方法和装置来导出指示分组流内的特定应用的业务流签名。
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