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1.发明申请Intra-Domain and Inter-Domain Bridging Over MPLS Using MAC Distribution Via Border Gateway Protocol 审中-公开通过边界网关协议使用MAC分配的MPLS上的域内和域间桥接公开(公告)号：US20140010232A1
公开(公告)日：2014-01-09
申请号：US14019728
申请日：2013-09-06
IPC分类号： H04L12/741
CPC分类号： H04L45/745 , H04L45/02 , H04L45/04 , H04L45/50
摘要： In one embodiment, a method includes receiving, by a first autonomous system border router (ASBR) of a first autonomous system (AS), a first plurality of provider-provisioned media access control (B-MAC) addresses via Interior Border Gateway Protocol (I-BGP). Each of first plurality of B-MAC addresses is associated with a provider edge (PE) device of the first AS. The first ASBR sends the first plurality of B-MAC addresses to a second ASBR of a second AS using Exterior Border Gateway Protocol (E-BGP). The first ASBR also receives via E-BGP a second plurality of B-MAC addresses each of which is associated with a PE device of the second AS. The first ASBR then distributes the second plurality of B-MAC addresses to each of the PE devices of the first AS using I-BGP.
摘要翻译： 在一个实施例中，一种方法包括由第一自治系统（AS）的第一自治系统边界路由器（ASBR）通过内部边界网关协议（第一自治系统边界路由器（ASBR））接收第一多个提供商提供的媒体访问控制（B-MAC） I-BGP）。 第一多个B-MAC地址中的每一个与第一AS的提供商边缘（PE）设备相关联。 第一ASBR使用外部边界网关协议（E-BGP）向第二AS的第二ASBR发送第一多个B-MAC地址。 第一ASBR还经由E-BGP接收第二多个B-MAC地址，每个B-MAC地址与第二AS的PE设备相关联。 第一ASBR然后使用I-BGP将第二多个B-MAC地址分配给第一AS的每个PE设备。
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2.发明授权公开(公告)号：US08531941B2
公开(公告)日：2013-09-10
申请号：US11827772
申请日：2007-07-13
IPC分类号： H04L12/28
CPC分类号： H04L45/745 , H04L45/02 , H04L45/04 , H04L45/50
摘要： In one embodiment, a method includes receiving, by a first autonomous system border router (ASBR) of a first autonomous system (AS), a first plurality of provider-provisioned media access control (B-MAC) addresses via Interior Border Gateway Protocol (I-BGP). Each of first plurality of B-MAC addresses is associated with a provider edge (PE) device of the first AS. The first ASBR sends the first plurality of B-MAC addresses to a second ASBR of a second AS using Exterior Border Gateway Protocol (E-BGP). The first ASBR also receives via E-BGP a second plurality of B-MAC addresses each of which is associated with a PE device of the second AS. The first ASBR then distributes the second plurality of B-MAC addresses to each of the PE devices of the first AS using I-BGP.
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3.发明申请Intra-domain and inter-domain bridging over MPLS using MAC distribution via border gateway protocol 有权通过边界网关协议使用MAC分配的MPLS上的域内和域间桥接公开(公告)号：US20090016365A1
公开(公告)日：2009-01-15
申请号：US11827772
申请日：2007-07-13
IPC分类号： H04L12/66
CPC分类号： H04L45/745 , H04L45/02 , H04L45/04 , H04L45/50
摘要： In one embodiment, a method includes receiving, by a first autonomous system border router (ASBR) of a first autonomous system (AS), a first plurality of provider-provisioned media access control (B-MAC) addresses via Interior Border Gateway Protocol (I-BGP). Each of first plurality of B-MAC addresses is associated with a provider edge (PE) device of the first AS. The first ASBR sends the first plurality of B-MAC addresses to a second ASBR of a second AS using Exterior Border Gateway Protocol (E-BGP). The first ASBR also receives via E-BGP a second plurality of B-MAC addresses each of which is associated with a PE device of the second AS. The first ASBR then distributes the second plurality of B-MAC addresses to each of the PE devices of the first AS using I-BGP.
摘要翻译： 在一个实施例中，一种方法包括由第一自治系统（AS）的第一自治系统边界路由器（ASBR）通过内部边界网关协议（第一自治系统（ASBR））接收第一多个提供者提供的媒体访问控制（B-MAC） I-BGP）。 第一多个B-MAC地址中的每一个与第一AS的提供商边缘（PE）设备相关联。 第一ASBR使用外部边界网关协议（E-BGP）向第二AS的第二ASBR发送第一多个B-MAC地址。 第一ASBR还经由E-BGP接收第二多个B-MAC地址，每个B-MAC地址与第二AS的PE设备相关联。 第一ASBR然后使用I-BGP将第二多个B-MAC地址分配给第一AS的每个PE设备。
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公开(公告)号：US20120188909A1
公开(公告)日：2012-07-26
申请号：US13430230
申请日：2012-03-26
CPC分类号： H04L45/00 , H04L12/185 , H04L12/1877 , H04L45/16
摘要： Various techniques for exchanging control messages in order to gracefully reroute multicast traffic are disclosed. For example, one method involves sending a join message for a multicast group towards a root of a new multicast tree and forwarding multicast traffic, addressed to the multicast group, on a current multicast tree until an acknowledgment corresponding to the join message is received. The new multicast tree can be identified in response to detection of a topology change within the network. Until the acknowledgment is received, multicast traffic that is received via the new multicast tree can be dropped.
摘要翻译： 公开了用于交换控制消息以便正确地重新路由组播业务的各种技术。 例如，一种方法包括向新的多播树的根发送一个组播组的加入消息，并在当前的多播树上转发寻址到组播组的组播流，直到接收到与加入消息对应的确认。 可以响应于网络内的拓扑变化的检测来识别新的多播树。 在接收到确认之前，可以删除通过新的多播树接收的组播流量。
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5.发明授权Method and apparatus for actively discovering internet protocol equal cost multiple paths and associate metrics 有权用于主动发现互联网协议相同成本多路径和关联度量的方法和装置公开(公告)号：US08170022B2
公开(公告)日：2012-05-01
申请号：US11456467
申请日：2006-07-10
IPC分类号： H04L12/56
CPC分类号： H04L45/26 , H04L45/12 , H04L45/124 , H04L45/36
摘要： Methods and apparatus for identifying a best path from a plurality of equal cost paths while accounting for service level agreement (SLA) metrics are disclosed. According to one aspect of the present invention, a method for routing a packet that has a payload using a node includes obtaining the packet, and adding an address of the node to the payload. Adding the address of the node to the payload creates an augmented packet. The method also includes identifying at least one element to which the augmented packet is to be routed, and providing the augmented packet to that element. In one embodiment, the method also includes storing ingress and egress timestamps associated with the node.
摘要翻译： 公开了在考虑服务水平协议（SLA）度量时，从多个相同成本路径识别最佳路径的方法和装置。 根据本发明的一个方面，一种用于使用节点对具有有效载荷的分组进行路由的方法包括获得所述分组，以及将所述节点的地址添加到所述有效载荷。 将节点的地址添加到有效载荷中创建一个增强的数据包。 该方法还包括识别增加的分组将路由到的至少一个元素，以及向该元素提供增强的分组。 在一个实施例中，该方法还包括存储与节点相关联的入口和出口时间戳。
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公开(公告)号：US20120102223A1
公开(公告)日：2012-04-26
申请号：US12909595
申请日：2010-10-21
IPC分类号： G06F15/173
CPC分类号： H04L45/12 , G06F15/16 , G06F15/173 , H04L12/1489 , H04L12/18 , H04L12/1877 , H04L45/04 , H04L67/2814
摘要： In one embodiment, a first network device may receive a request for an identifier of at least one target to service a client. The first network device may obtain an identifier of each of two or more targets. The first network device may then determine whether to redirect the request. The first network device may redirect the request to a second network device according to a result of the determining step, where the first network device is in a first autonomous system and the second network device is in a second autonomous system.
摘要翻译： 在一个实施例中，第一网络设备可以接收对至少一个目标的标识符的请求以服务客户端。 第一网络设备可以获得两个或更多个目标中的每一个的标识符。 然后，第一网络设备可以确定是否重定向该请求。 第一网络设备可以根据确定步骤的结果将请求重定向到第二网络设备，其中第一网络设备在第一自治系统中，而第二网络设备处于第二自治系统中。
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公开(公告)号：US07747777B2
公开(公告)日：2010-06-29
申请号：US11948799
申请日：2007-11-30
IPC分类号： G06F15/173
摘要： In one embodiment, an apparatus comprises logic for optimizing network resources usage. The logic is operable to store IGP information, where the IGP information includes a set of attribute values associated with each of a set of content servers. When the logic receives a request for content from a remote peer, the logic determines one or more content servers that can provide the requested content. The logic then retrieves, from the IGP information, a plurality of attribute values associated with a non-looping path from each of the one or more content servers. For each of the one or more content servers, the retrieved attribute values include: one or more capacity values indicating capacities of one or more communication links on the non-looping path from that content server; and one or more utilization values indicating utilizations of the one or more communication links on the non-looping path from that content server. The logic then selects a content server based on the retrieved attribute values, and causes the request for the content to be sent to the selected content server.
摘要翻译： 在一个实施例中，一种装置包括用于优化网络资源使用的逻辑。 逻辑可操作地存储IGP信息，其中IGP信息包括与一组内容服务器中的每一个相关联的一组属性值。 当逻辑从远程对等体接收到对内容的请求时，逻辑确定可以提供所请求的内容的一个或多个内容服务器。 然后，逻辑从IGP信息中检索与一个或多个内容服务器中的每一个的非循环路径相关联的多个属性值。 对于所述一个或多个内容服务器中的每一个，所检索的属性值包括：指示来自该内容服务器的非循环路径上的一个或多个通信链路的容量的一个或多个容量值; 以及指示来自该内容服务器的非循环路径上的一个或多个通信链路的利用的一个或多个利用率值。 然后，该逻辑基于所检索的属性值选择一个内容服务器，并且将该内容的请求发送到所选择的内容服务器。
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公开(公告)号：US07433320B2
公开(公告)日：2008-10-07
申请号：US11048077
申请日：2005-02-01
CPC分类号： H04L45/026 , H04L43/0811 , H04L45/26 , H04L45/28 , H04L63/0272
摘要： Customer edge (CE) to CE device verification checks initiate routes from available CEs as a set of path verification messages, destined for remote CE routes serving a remote VPN. An extended community attribute, included among the attributes of the path verification message, stores the identity of the originating CE router. The path verification message propagates across the network, and transports the identity of the originating CE router because the originator identity is not overwritten by successive routing. Upon receipt by the remote CE, the originator is determinable from the extended community attribute. A further reachability field is also included in the extended community attribute and indicates whether per CE or per prefix is appropriate for the particular route in question. In this manner, CE-CE connectivity checks identify CEs which are reachable from other CEs. Accordingly, such a mechanism allows for route reachability aggregation on a per-CE or per-prefix reachability basis.
摘要翻译： 客户端（CE）到CE设备验证检查从可用的CE启动路由作为一组路径验证消息，目的地是服务于远程VPN的远程CE路由。 包含在路径验证消息的属性之间的扩展团体属性存储始发CE路由器的身份。 路径验证消息通过网络传播，并传输始发CE路由器的身份，因为始发方身份不会被连续路由覆盖。 远程CE收到后，发起者可以从扩展团体属性中确定。 扩展社区属性中还包括另外的可访问性字段，并指示每个CE或每个前缀是否适合所讨论的特定路由。 以这种方式，CE-CE连接检查可以识别可从其他CE接入的CE。 因此，这种机制允许基于每个CE或每个前缀可达性的路由可达性聚合。
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公开(公告)号：US20080225852A1
公开(公告)日：2008-09-18
申请号：US11725157
申请日：2007-03-15
IPC分类号： H04L12/56
CPC分类号： H04L45/50 , H04L12/4633 , H04L45/04
摘要： A system receives a packet at a first node. The packet is destined for a second node. The system identifies a full routing node from a plurality of network devices. The full routing node is capable of providing routing information for each of the nodes within the plurality of network devices. The plurality of network devices comprises a subset of nodes, and a subset of full routing nodes. The subset of nodes is not capable of providing routing information for each of the nodes within the plurality of network devices. The system transmits the packet to the full routing node for future transmission to the second node.
摘要翻译： 系统在第一节点处接收分组。 数据包将发往第二个节点。 该系统从多个网络设备中识别完整的路由节点。 完整路由节点能够为多个网络设备内的每个节点提供路由信息。 多个网络设备包括节点的子集，以及完整路由节点的子集。 节点的子集不能为多个网络设备内的每个节点提供路由信息。 系统将数据包发送到完整路由节点，以便将来传输到第二个节点。
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10.发明申请Method and apparatus for managing forwarding of data in an autonomous system 有权用于管理自主系统中的数据转发的方法和装置公开(公告)号：US20070091793A1
公开(公告)日：2007-04-26
申请号：US11254468
申请日：2005-10-20
申请人： Clarence Filsfils , John Scudder , Stefano Previdi
发明人： Clarence Filsfils , John Scudder , Stefano Previdi
CPC分类号： H04L45/22 , H04L12/4633 , H04L45/04 , H04L45/28 , H04L45/50
摘要： A method of managing forwarding of data in a first autonomous system (AS) is described. The first AS includes a plurality of border routers having inter-domain links to one or more remote AS's and an associated exterior communications protocol. The border routers use an interior communications protocol with other border routers in the first AS using primary tunnels. The method comprises the steps, performed at a first border router having a primary route via an inter-domain link to a remote AS, of constructing an alternate route to the remote AS via second border router in the first AS, instigating a backup tunnel to the second border router upon failure of the primary route and sending a failure message to the other border routers.
摘要翻译： 描述了在第一自治系统（AS）中管理数据转发的方法。 第一AS包括具有到一个或多个远程AS的域间链接和相关联的外部通信协议的多个边界路由器。 边界路由器使用内部通信协议与第一AS中的其他边界路由器使用主隧道。 该方法包括以下步骤：在具有通过到远程AS的域间链路的主路由的第一边界路由器上执行的步骤，通过第一AS中的第二边界路由器构建到远程AS的备用路由，将备用隧道引导到 主路由器故障时的第二个边界路由器，并向其他边界路由器发送故障消息。
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