MIGRATING VIRTUAL MACHINES BETWEEN COMPUTING DEVICES
    31.
    发明申请
    MIGRATING VIRTUAL MACHINES BETWEEN COMPUTING DEVICES 有权
    计算设备之间迁移虚拟机

    公开(公告)号:US20140007089A1

    公开(公告)日:2014-01-02

    申请号:US13537526

    申请日:2012-06-29

    IPC分类号: G06F9/455

    CPC分类号: G06F9/4856 G06F9/5077

    摘要: In one example, a system includes a first computing device configured to execute a virtual machine, wherein the virtual machine is communicatively coupled to a virtual private network (VPN) via a first attachment circuit using a first set of network parameters, stop execution of the virtual machine, and create checkpoint data for the virtual machine, and a second computing device configured to execute the virtual machine, using at least some of the checkpoint data, and to cause the virtual machine to become communicatively coupled to the VPN via a second attachment circuit using a second set of network parameters different from the first set of network parameters. The system may further include a first provider edge (PE) routing device communicatively coupled to the first computing device via the first attachment circuit, and a second PE routing device communicatively coupled to the second computing device via the second attachment circuit.

    摘要翻译: 在一个示例中,系统包括被配置为执行虚拟机的第一计算设备,其中所述虚拟机通过使用第一组网络参数的第一附接电路通信地耦合到虚拟专用网络(VPN),停止执行 虚拟机,并为虚拟机创建检查点数据,以及第二计算设备,被配置为使用至少一些检查点数据来执行虚拟机,并且使虚拟机通过第二附件通信地耦合到VPN 电路使用与第一组网络参数不同的第二组网络参数。 该系统还可以包括通过第一连接电路通信地耦合到第一计算设备的第一提供商边缘(PE)路由设备,以及经由第二连接电路通信地耦合到第二计算设备的第二PE路由设备。

    FEEDBACK LOOP FOR SERVICE ENGINEERED PATHS
    32.
    发明申请
    FEEDBACK LOOP FOR SERVICE ENGINEERED PATHS 有权
    服务工程师的反馈环

    公开(公告)号:US20140003232A1

    公开(公告)日:2014-01-02

    申请号:US13534121

    申请日:2012-06-27

    IPC分类号: H04L12/24 H04L12/56

    摘要: In general, techniques are described for providing feedback loops for service engineered paths. A service node comprising an interface and a control unit may implement the techniques. The interface receives traffic via a path configured within a network to direct the traffic from an ingress network device of the path to the service node. The control unit applies one or more services to the traffic received via the path and generates service-specific information related to the application of the one or more services to the traffic. The interface then sends the service-specific information to at least one network device configured to forward the traffic via the path so that the at least one network device configured to forward the traffic via the path is able to adapt the path based on the service-specific information.

    摘要翻译: 通常,描述了为服务工程路径提供反馈回路的技术。 包括接口和控制单元的服务节点可以实现这些技术。 该接口通过网络中配置的路径接收流量,将流量从路由入口网络设备引导到业务节点。 控制单元将一个或多个服务应用于经由路径接收到的业务,并且生成与该业务相关的一个或多个业务的应用相关的业务特定信息。 接口然后将服务特定信息发送到被配置为经由路径转发流量的至少一个网络设备,使得配置成经由路径转发流量的至少一个网络设备能够基于服务 - 具体信息。

    Performing an in-service software reload on a network device
    33.
    发明授权
    Performing an in-service software reload on a network device 有权
    在网络设备上执行在线软件重新加载

    公开(公告)号:US08578007B1

    公开(公告)日:2013-11-05

    申请号:US13433723

    申请日:2012-03-29

    IPC分类号: G06F9/00

    CPC分类号: H04L45/563 G06F8/65 H04L67/34

    摘要: A software reload is executed. The hardware associated with the network device continues to forward network traffic during the software reload. Also, a kernel of the network device operates unaffected in a protected address space throughout the software reload. Further, the kernel preserves local checkpointed and shared memory data. Application processes running on the network node are shut down gracefully. The reloaded software is brought up and the network device is resynchronized.

    摘要翻译: 执行软件重新加载。 与网络设备相关联的硬件在软件重新加载期间继续转发网络流量。 此外,网络设备的内核在整个软件重新加载期间在受保护的地址空间中不受影响。 此外,内核保留本地检查点和共享内存数据。 在网络节点上运行的应用程序进程正常关闭。 重新加载的软件被启动,并且网络设备被重新同步。

    HIERARCHICAL FLOODING AMONG PEERING OVERLAY NETWORKS
    34.
    发明申请
    HIERARCHICAL FLOODING AMONG PEERING OVERLAY NETWORKS 有权
    分层网络中的层次分析

    公开(公告)号:US20100226374A1

    公开(公告)日:2010-09-09

    申请号:US12396721

    申请日:2009-03-03

    IPC分类号: H04L12/56

    CPC分类号: H04L45/00 H04L45/32 H04L45/64

    摘要: In a tiered system of networks capable of processing distributed hash table (DHT) Put and Get messages, if a sending network of a Put or Get is at a tier below a subject tier at which a subject network receiving the message is located, the message is forwarded to networks at tiers below the subject tier. On the other hand, if the sending network is at a tier equal to or above the subject tier, the message is forwarded to all networks in the system other than the sending network.

    摘要翻译: 在能够处理分布式哈希表(DHT)Put和Get消息的分层网络系统中,如果Put或Get的发送网络处于接收消息的主题网络所处的主体层以下的层,则该消息 被转发到主体层以下的网络。 另一方面,如果发送网络处于等于或高于主体层的层,则将消息转发到系统中除发送网络之外的所有网络。

    Allocating and distributing labels for packet encapsulation
    36.
    发明授权
    Allocating and distributing labels for packet encapsulation 有权
    分配和分发报文封装标签

    公开(公告)号:US09088519B2

    公开(公告)日:2015-07-21

    申请号:US13525073

    申请日:2012-06-15

    IPC分类号: H04L12/723 H04L12/46

    摘要: In one example, a network device receives a packet to be forwarded according to a label switching protocol, determines a service to be performed on the packet by a service network device, sends a label request message to the service network device, wherein the label request message indicates support for labels having a particular length, wherein the particular length is larger than twenty bits (e.g., forty bits), and wherein the label request message specifies the service to be performed on the packet, receives, in response to the label request message, a label mapping message defining a label of the particular length, appends the label to the packet to form a Multi-Protocol Label Switching (MPLS)-encapsulated packet, and forwards the MPLS-encapsulated packet according to the label switching protocol.

    摘要翻译: 在一个示例中,网络设备根据标签交换协议接收要转发的分组,由服务网络设备确定要在分组上执行的服务,向服务网络设备发送标签请求消息,其中标签请求 消息指示对具有特定长度的标签的支持,其中特定长度大于二十位(例如,四十位),并且其中标签请求消息指定要对分组执行的服务,响应于标签请求而接收 消息,定义特定长度的标签的标签映射消息,将标签附加到分组以形成多协议标签交换(MPLS)封装的分组,并根据标签交换协议转发MPLS封装的分组。

    Path computation element communication protocol (PCEP) extensions for stateful label switched path management
    37.
    发明授权
    Path computation element communication protocol (PCEP) extensions for stateful label switched path management 有权
    用于状态标签交换路径管理的路径计算单元通信协议(PCEP)扩展

    公开(公告)号:US08885463B1

    公开(公告)日:2014-11-11

    申请号:US13324861

    申请日:2011-12-13

    IPC分类号: H04L12/28

    CPC分类号: H04L45/50 H04L45/02 H04L45/38

    摘要: In general, techniques are described for extending a path computation element (PCE) communication protocol (PCEP) to support messages that enable PCEs to actively modify Multi-Protocol Label Switching (MPLS) for Traffic Engineering Label Switched Paths (TE LSPs) in and across network domains. In one example, an LSP database of a router includes configuration data for one or more LSPs configured in the router and further includes LSP state information specifying a current state of all LSPs of the router. A path computation client (PCC) of a router establishes an extended PCEP session and synchronizes LSP state information to a stateful PCE using the extended PCEP session. Subsequently, the stateful PCE sends an LSP update request to the PCC in the extended PCEP session, wherein the LSP update request includes one or more updated parameters for the LSP. The PCC then re-signals the LSP through the network according to the updated parameters.

    摘要翻译: 通常,描述了用于扩展路径计算元件(PCE)通信协议(PCEP)以支持使得PCE能够主动修改用于和跨越的流量工程标签交换路径(TE LSP)的多协议标签交换路由(MPLS)的消息的技术。 网域。 在一个示例中,路由器的LSP数据库包括在路由器中配置的一个或多个LSP的配置数据,还包括指定路由器所有LSP的当前状态的LSP状态信息。 路由器的路径计算客户端(PCC)建立扩展PCEP会话,并使用扩展PCEP会话将LSP状态信息同步到有状态PCE。 随后,有状态PCE在扩展PCEP会话中向PCC发送LSP更新请求,其中LSP更新请求包括用于LSP的一个或多个更新的参数。 然后,PCC根据更新的参数通过网络重新发送LSP。

    Hierarchical flooding among peering overlay networks
    38.
    发明授权
    Hierarchical flooding among peering overlay networks 有权
    对等覆盖网络中的分层洪泛

    公开(公告)号:US08228822B2

    公开(公告)日:2012-07-24

    申请号:US12396721

    申请日:2009-03-03

    IPC分类号: H04L12/28

    CPC分类号: H04L45/00 H04L45/32 H04L45/64

    摘要: In a tiered system of networks capable of processing distributed hash table (DHT) Put and Get messages, if a sending network of a Put or Get is at a tier below a subject tier at which a subject network receiving the message is located, the message is forwarded to networks at tiers below the subject tier. On the other hand, if the sending network is at a tier equal to or above the subject tier, the message is forwarded to all networks in the system other than the sending network.

    摘要翻译: 在能够处理分布式哈希表(DHT)Put和Get消息的分层网络系统中,如果Put或Get的发送网络处于接收消息的主题网络所处的主体层以下的层,则该消息 被转发到主体层以下的网络。 另一方面,如果发送网络处于等于或高于主体层的层,则将消息转发到系统中除发送网络之外的所有网络。

    DYNAMICALLY GENERATING APPLICATION-LAYER TRAFFIC OPTIMIZATION PROTOCOL MAPS
    39.
    发明申请
    DYNAMICALLY GENERATING APPLICATION-LAYER TRAFFIC OPTIMIZATION PROTOCOL MAPS 有权
    动态生成应用层交通协议优化协议

    公开(公告)号:US20120144066A1

    公开(公告)日:2012-06-07

    申请号:US13110987

    申请日:2011-05-19

    IPC分类号: G06F15/173

    摘要: In general, techniques are described for using routing information obtained by operation of network routing protocols to dynamically generate network and cost maps for an application-layer traffic optimization (ALTO) service. For example, an ALTO server of an autonomous system (AS) receives routing information from routers of the AS by listening for routing protocol updates outputted by the routers and uses the received topology information to dynamically generate a network map of PIDs that reflects a current topology of the AS and/or of the broader network that includes the AS. Additionally, the ALTO server dynamically calculates inter-PID costs using received routing information that reflects current link metrics. The ALTO server then assembles the inter-PID costs into a cost map that the ALTO server may provide, along with the network map, to clients of the ALTO service.

    摘要翻译: 一般来说,描述了使用通过网络路由协议的操作而获得的路由信息​​来动态地生成用于应用层流量优化(ALTO)服务的网络和成本映射的技术。 例如,自治系统(AS)的ALTO服务器通过监听由路由器输出的路由协议更新从AS的路由器接收路由信息,并使用接收的拓扑信息动态生成反映当前拓扑的PID的网络映射 的AS和/或包括AS的更广泛的网络。 此外,ALTO服务器使用反映当前链路指标的接收路由信息动态计算PID间成本。 然后,ALTO服务器将PID成本组合到ALTO服务器可以提供的成本图以及网络映射到ALTO服务的客户端。

    APPLICATION-LAYER TRAFFIC OPTIMIZATION SERVICE ENDPOINT TYPE ATTRIBUTE
    40.
    发明申请
    APPLICATION-LAYER TRAFFIC OPTIMIZATION SERVICE ENDPOINT TYPE ATTRIBUTE 有权
    应用层交通优化服务端点类型属性

    公开(公告)号:US20110295983A1

    公开(公告)日:2011-12-01

    申请号:US12861671

    申请日:2010-08-23

    IPC分类号: G06F15/177 G06F15/173

    摘要: Using the ALTO Service, networking applications can request through the ALTO protocol information about the underlying network topology from the ISP or Content Provider. The ALTO Service provides information such as network resource preferences with the goal of modifying network resource consumption patterns while maintaining or improving application performance. This document describes, in one example, an ALTO server that implements enhancements to the ALTO service to assign a PID-type attribute to each of a set of one or more PIDs each associated with a subset of one or more endpoints of a network, wherein a PID-type attribute specifies a type for the subset of endpoints associated with the PID. The ALTO server generates an ALTO network map that includes a PID entry to describe each of the PIDs, wherein each PID entry includes a PID-type field that stores the assigned PID-type attribute for the PID described by the PID entry.

    摘要翻译: 使用ALTO服务,网络应用程序可以通过ALTO协议向ISP或内容提供商请求关于底层网络拓扑的信息。 ALTO服务提供诸如网络资源偏好的信息,目的是在维护或提高应用程序性能的同时修改网络资源消耗模式。 本文档在一个示例中描述了ALTO服务器,其实现对ALTO服务的增强以将PID类型属性分配给每个与网络的一个或多个端点的子集相关联的一个或多个PID的集合中的每一个,其中 PID类型属性指定与PID相关联的端点子集的类型。 ALTO服务器生成包括用于描述每个PID的PID条目的ALTO网络映射,其中每个PID条目包括存储由PID条目描述的PID的分配的PID类型属性的PID类型字段。