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    Mechanism for optimized customer MAC address flushing in PBB-EVPN
    142.
    发明授权
    Mechanism for optimized customer MAC address flushing in PBB-EVPN 有权

    公开(公告)号：US09838310B1

    公开(公告)日：2017-12-05

    申请号：US14920727

    申请日：2015-10-22

    Applicant: Cisco Technology, Inc.

    Inventor： Ali Sajassi ,  Jose A. Liste ,  Patrice Brissette ,  Mei Zhang ,  Vi Vu

    IPC: H04L12/56 ,  H04L12/721 ,  H04L29/12

    CPC classification number: H04L61/6022

    Abstract: Systems, methods, and computer-readable media for flushing of Customer Media Access Control (C-MAC) addresses in a PBB-EVPN network are disclosed. A first provider edge (PE) device can maintain a plurality of service instances configured on a first interface. The first PE device can detect at least one failed ethernet virtual circuit (EVC) on the first interface and identify at least one service instance from the plurality of service instances that is associated with the at least one failed EVC. The PE device can send, to a second PE device, a C-MAC flush notification message that identifies the at least one service instance and the message can cause the second PE device to remove C-MAC addresses corresponding to the at least one service instance and the B-MAC address for the first interface.

    Stitching multicast trees
    145.
    发明授权
    Stitching multicast trees 有权

    公开(公告)号：US09419817B2

    公开(公告)日：2016-08-16

    申请号：US14740512

    申请日：2015-06-16

    Applicant: Cisco Technology, Inc.

    Inventor： Ali Sajassi ,  Samer Salam ,  Sami Boutros

    IPC: H04L12/46 ,  H04L12/753 ,  H04L12/18 ,  H04L12/751 ,  H04L29/12 ,  H04L12/723

    CPC classification number: H04L12/4679 ,  H04L12/1863 ,  H04L45/02 ,  H04L45/48 ,  H04L45/50 ,  H04L61/2069

    Abstract: Techniques for stitching multicast trees in a multiple data center environment. According to one embodiment, a technique for stitching multicast trees is provided, which includes determining, at an edge device of a data center, one or more Virtual Local Area Networks (VLANs) assigned to the edge device as a result of a designated forwarder election. An assigned forwarder message is sent by the edge device to one or more devices on the data center, the assigned forwarder message advertising the edge device as a designated forwarder for the VLANs assigned to the edge device. For each of the VLANs assigned to the edge device, the assigned forwarder message causes the edge device to be included in a multicast tree for the VLAN when the assigned forwarder message is received by specific ones of the devices in the data center that are associated with the VLAN.

    Redundancy for inter-AS L2VPN service with optimal forwarding
    146.
    发明授权
    Redundancy for inter-AS L2VPN service with optimal forwarding 有权
    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

    Applicant: Cisco Technology, Inc.

    Inventor： Ali Sajassi ,  Samer Salam ,  Sami Boutros

    IPC: H04L12/733

    CPC classification number: H04L45/126 ,  H04L12/4641 ,  H04L45/48 ,  H04L45/66

    Abstract: 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.

    Abstract translation: 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）。

    VIRTUAL PRIVATE WIRE SERVICES USING E-VPN
    147.
    发明申请
    VIRTUAL PRIVATE WIRE SERVICES USING E-VPN 有权
    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

    Applicant: Cisco Technology, Inc.

    Inventor： Sami Boutros ,  Ali Sajassi ,  Samer Salam

    IPC: H04L12/721

    CPC classification number: H04L45/14 ,  H04L12/4641 ,  H04L45/04

    Abstract: 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.

    Abstract translation: 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。

    ETHERNET VIRTUAL PRIVATE NETWORK SYSTEM FOR PROVIDING FAST PROTECTION FOR ACCESS RINGS
    148.
    发明申请
    ETHERNET VIRTUAL PRIVATE NETWORK SYSTEM FOR PROVIDING FAST PROTECTION FOR ACCESS RINGS 有权
    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

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Samer Salam ,  Ali Sajassi ,  Sami Boutros

    IPC: H04L12/24

    CPC classification number: H04L41/0677 ,  H04L12/437 ,  H04L41/0659

    Abstract: 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.

    Abstract translation: 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。

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