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41. 发明授权

US09118572B2 Redundancy for inter-AS L2VPN service with optimal forwarding 有权
标题翻译：跨域L2VPN服务的冗余优化转发
公开(公告)号：US09118572B2
公开(公告)日：2015-08-25
申请号：US14022382
申请日：2013-09-10
申请人： Cisco Technology, Inc.
发明人： Ali Sajassi , Samer Salam , Sami Boutros
IPC分类号： H04L12/733
CPC分类号： H04L45/126 , H04L12/4641 , H04L45/48 , H04L45/66
摘要： In one embodiment, a particular autonomous system border router (ASBR), in a control-plane media access control (MAC) learning (CPML) network, discovers other ASBRs in the CPML network, the particular ASBR and other ASBRs interconnected with respective ASBRs of a data-plane MAC learning (DPML) network. The particular ASBR calculates one or more internal shortest path first (SPF) trees rooted respectively at each of the other ASBRs in the CPML network, and upon receiving a MAC advertisement route for a given MAC address with a given next-hop IP address, it may determine a distance from the particular and each other ASBR in the CPML network to the given IP address based on the internal SPF trees. In response to the distance from the particular ASBR being shorter than the distance from each other ASBR, the particular ASBR is designated as a designated forwarder (DF) for traffic sourced from the given MAC address.
摘要翻译：在一个实施例中，在控制平面媒体访问控制（MAC）学习（CPML）网络中的特定自治系统边界路由器（ASBR）发现CPML网络中的其他ASBR，与ASBR相关联的ASBR和ASBR 数据平面MAC学习（DPML）网络。特定的ASBR计算分别在CPML网络中的每个其他ASBR上的一个或多个内部最短路径优先（SPF）树，并且在接收到具有给定下一跳IP地址的给定MAC地址的MAC广告路由时，可以根据内部SPF树确定从CPML网络中的特定和彼此ASBR到给定IP地址的距离。响应于距离特定ASBR的距离短于彼此的距离ASBR，特定ASBR被指定为来自给定MAC地址的流量的指定转发器（DF）。

42. 发明申请

US20150006757A1 VIRTUAL PRIVATE WIRE SERVICES USING E-VPN 有权
标题翻译：使用E-VPN的虚拟私有线路服务
公开(公告)号：US20150006757A1
公开(公告)日：2015-01-01
申请号：US13927350
申请日：2013-06-26
申请人： Cisco Technology, Inc.
发明人： Sami Boutros , Ali Sajassi , Samer Salam
IPC分类号： H04L12/721
CPC分类号： H04L45/14 , H04L12/4641 , H04L45/04
摘要： In one embodiment, one or more point-to-point (P2P) services are established between attachment circuits on provider edge (PE) devices in a computer network, and each of the one or more P2P services (e.g., Virtual Private Wire Service, VPWS) are associated with an Ethernet virtual private network (E-VPN) Ethernet Auto-Discovery (A-D) route, where links between the PE devices and customer edge (CE) devices are configured as Ethernet interfaces with Ethernet tagging. As such, the Ethernet A-D route may then be exchanged for each P2P service attachment circuit, and forwarding can be performed on the one or more P2P services without performing a media access control (MAC) address lookup and without performing MAC learning.
摘要翻译：在一个实施例中，在计算机网络中的提供商边缘（PE）设备上的附接电路之间建立一个或多个点对点（P2P）服务，并且所述一个或多个P2P服务（例如，虚拟专线服务， VPWS）与以太网虚拟专用网（E-VPN）以太网自动发现（AD）路由相关联，其中PE设备和客户端（CE）设备之间的链路被配置为具有以太网标记的以太网接口。因此，可以为每个P2P服务附接电路交换以太网A-D路由，并且可以在一个或多个P2P服务上执行转发，而不执行媒体访问控制（MAC）地址查找，而不执行MAC学习。

43. 发明申请

US20140233369A1 ETHERNET VIRTUAL PRIVATE NETWORK SYSTEM FOR PROVIDING FAST PROTECTION FOR ACCESS RINGS 有权
标题翻译：以太网虚拟私有网络系统，用于为访问环提供快速保护
公开(公告)号：US20140233369A1
公开(公告)日：2014-08-21
申请号：US13769474
申请日：2013-02-18
申请人： CISCO TECHNOLOGY, INC.
发明人： Samer Salam , Ali Sajassi , Sami Boutros
IPC分类号： H04L12/24
CPC分类号： H04L41/0677 , H04L12/437 , H04L41/0659
摘要： In one embodiment, a method includes obtaining a first indication from a first source included in an Ethernet ring and obtaining a second indication from a second source associated with a provider edge (PE) node The method also includes determining when the first indication and the second indication are indicative of a direct failure of the PE node and determining when the first indication and the second indication are indicative of a ring partition failure associated with the Ethernet ring. The direct failure of the PE node is identified when it is determined that the first indication and the second indication are indicative of the direct failure of the PE node, and the ring partition failure associated with the Ethernet ring is identified when it is determined that the first indication and the second indication are indicative of the ring partition failure associated with the Ethernet ring.
摘要翻译：在一个实施例中，一种方法包括从包括在以太网环中的第一源获得第一指示，并且从与提供商边缘（PE）节点相关联的第二源获得第二指示。该方法还包括确定何时第一指示和第二指示指示表示PE节点的直接故障，并且确定何时第一指示和第二指示指示与以太网环相关联的环分区故障。当确定第一指示和第二指示指示PE节点的直接故障时，识别PE节点的直接故障，并且当确定与以太网环相关联的环分区故障被确定为第一指示和第二指示指示与以太网环相关联的环分区故障。

44. 发明申请

US20130148489A1 CONNECTION VERIFICATION FOR MPLS LABEL SWITCHED PATHS AND PSEUDOWIRES 审中-公开
标题翻译： MPLS标签交换机和PSEUDOWIRES的连接验证
公开(公告)号：US20130148489A1
公开(公告)日：2013-06-13
申请号：US13760854
申请日：2013-02-06
申请人： Cisco Technology, Inc.
发明人： Sami Boutros , Muthurajah Sivabalan , David D. Ward , George Swallow , Stewart Frederick Bryant , Ian Michael Charles Shand
IPC分类号： H04L12/24
CPC分类号： H04L12/2419 , H04L41/06 , H04L43/0811 , H04L45/26 , H04L45/28 , H04L45/50 , H04L47/10
摘要： In one embodiment, a maintenance intermediate point (MIP) receives a packet traveling along a multi-protocol label switching (MPLS) label switched path (LSP) that extends from a first maintenance end point (MEP) to a second MEP. The receiving MIP decrements a time-to-live (TTL) value in a header of the packet. In response the TTL value in the header of the packet equaling a particular value, the receiving MIP examines an associated channel header (ACH) field in an operations, administration, and maintenance (OAM) message stored in a payload of the packet, and determines a particular OAM function to perform based on a code in the ACH field. The receiving MIP performs the particular OAM function.
摘要翻译：在一个实施例中，维护中间点（MIP）接收沿着从第一维护终点（MEP）延伸到第二MEP的多协议标签交换（MPLS）标签交换路径（LSP）行进的分组。接收MIP减少分组报头中的生存时间（TTL）值。响应于等于特定值的分组的报头中的TTL值，接收MIP检查存储在分组的有效载荷中的操作，管理和维护（OAM）消息中的相关联的信道报头（ACH）字段，并且确定基于ACH字段中的代码执行的特定OAM功能。接收MIP执行特定的OAM功能。

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