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    MULTICAST TRAFFIC OPTIMIZATION IN MULTIHOMED EDGE NETWORK ELEMENTS
    71.
    发明申请
    MULTICAST TRAFFIC OPTIMIZATION IN MULTIHOMED EDGE NETWORK ELEMENTS 审中-公开

    公开(公告)号：US20200092122A1

    公开(公告)日：2020-03-19

    申请号：US16133000

    申请日：2018-09-17

    Applicant: Cisco Technology, Inc.

    Inventor： Mankamana Mishra ,  Swadesh Agrawal ,  Ali Sajassi ,  Ijsbrand Wijnands ,  Samir Thoria

    IPC: H04L12/18 ,  H04L12/723

    Abstract: A computer network efficiently provides a multicast network flow to a multicast recipient across a multihomed network element. The multihomed network element includes network devices that receive multicast data from a source of a multicast network flow. Each particular network device that received the multicast data publishes a notification indicating that the multicast network flow is available from the particular network device. The computer network receives a subscription to the multicast network flow from a multicast recipient, and determines whether to bridge the multicast data across the multihomed network element based on a multicast configuration of the computer network. The multihomed network element provides the multicast data to the multicast recipient from at least one of the particular network devices that received the multicast data from the source of the multicast network flow.

    Method and system for asymmetric redundancy mechanisms in multi-homed network access topologies
    73.
    发明授权
    Method and system for asymmetric redundancy mechanisms in multi-homed network access topologies 有权

    公开(公告)号：US10320658B2

    公开(公告)日：2019-06-11

    申请号：US15296867

    申请日：2016-10-18

    Applicant: Cisco Technology, Inc.

    Inventor： Ali Sajassi ,  Dezhong Cai

    IPC: H04L12/703 ,  H04L12/24 ,  H04L12/741 ,  H04L12/761 ,  H04L12/707

    Abstract: In one embodiment, a method is described. The method includes receiving a network communication at a network device of a redundancy group. The redundancy group comprises a plurality of network devices, and the plurality of network devices are addressed in a first network using an anycast address. The method further includes, if the network communication is received from the first network, forwarding the network communication into a second network. If the network communication is received from the second network, the method determines whether to forward the network communication into the first network based on a status of the network device in the redundancy group, and a result of a filtering operation.

    Providing intra-subnet and inter-subnet data center connectivity
    76.
    发明授权
    Providing intra-subnet and inter-subnet data center connectivity 有权
    提供子网内和子网间数据中心连接

    公开(公告)号：US09559951B1

    公开(公告)日：2017-01-31

    申请号：US14013201

    申请日：2013-08-29

    Applicant: Cisco Technology, Inc.

    Inventor： Ali Sajassi ,  Samer Salam

    IPC: H04L12/721

    CPC classification number: H04L45/66

    Abstract: In one embodiment, a method includes a method includes obtaining traffic, determining a host Media Access Control (MAC) address, and determining a host Internet Protocol (IP) address using the traffic. The method also includes generating an Ethernet virtual private network (E-VPN) MAC route advertisement that includes both the host MAC address and the host IP address and generating an IP virtual private network (IP-VPN) route advertisement that includes the host IP address.

    Abstract translation: 在一个实施例中，一种方法包括一种方法，包括获得业务，确定主机媒体接入控制（MAC）地址，以及使用该业务来确定主机因特网协议（IP）地址。 该方法还包括生成包括主机MAC地址和主机IP地址的以太网虚拟专用网（E-VPN）MAC路由通告，并生成包括主机IP地址的IP虚拟专用网（IP-VPN）路由通告 。

    FAST CONVERGENCE FOR FAILURES OF LARGE SCALE VIRTUAL ETHERNET SEGMENTS IN EVPN AND PBB-EVPN
    77.
    发明申请
    FAST CONVERGENCE FOR FAILURES OF LARGE SCALE VIRTUAL ETHERNET SEGMENTS IN EVPN AND PBB-EVPN 有权
    EVPN和PBB-EVPN中大规模虚拟以太网分段故障的快速融合

    公开(公告)号：US20160378606A1

    公开(公告)日：2016-12-29

    申请号：US14750311

    申请日：2015-06-25

    Applicant: Cisco Technology, Inc.

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

    IPC: G06F11/14 ,  H04L12/741 ,  H04L12/707

    CPC classification number: G06F11/1423 ,  H04L45/22 ,  H04L45/28 ,  H04L45/745

    Abstract: Systems, methods, and computer-readable media for fast convergence for virtual ethernet segments in EVPN and PBB-EVPN networks are disclosed. A first provider edge (PE) device can receive one or more advertising messages corresponding to one or more virtual ethernet segments, wherein each of the one or more advertising messages can include a port identifier. The first PE device maintains a table including the one or more virtual ethernet segments and the corresponding port identifier. The first PE device can receive a failure message from a second PE device that identifies a first port on the second PE device, and identifies, based on the table, at least one affected virtual ethernet segment that is associated with the first port. The first PE device can remove any routes that are associated with the at least one affected virtual ethernet segment and trigger mass designated-forwarding election for impacted virtual ethernet segments.

    Abstract translation: 公开了用于EVPN和PBB-EVPN网络中的虚拟以太网段的快速收敛的系统，方法和计算机可读介质。 第一提供商边缘（PE）设备可以接收对应于一个或多个虚拟以太网段的一个或多个广告消息，其中所述一个或多个广告消息中的每一个可以包括端口标识符。 第一个PE设备维护一个包含一个或多个虚拟以太网段和相应端口标识符的表。 第一PE设备可以从识别第二PE设备上的第一端口的第二PE设备接收到故障消息，并且基于该表识别与第一端口相关联的至少一个受影响的虚拟以太网段。 第一个PE设备可以删除与至少一个受影响的虚拟以太网段相关联的任何路由，并触发受影响的虚拟以太网段的大规模指定转发选举。

    Loop mitigation mechanism for Ethernet networks
    78.
    发明授权
    Loop mitigation mechanism for Ethernet networks 有权
    以太网网络环路缓解机制

    公开(公告)号：US09225642B2

    公开(公告)日：2015-12-29

    申请号：US14185636

    申请日：2014-02-20

    Applicant: Cisco Technology, Inc.

    Inventor： Ali Sajassi ,  Norman Finn ,  Francois Tallet

    IPC: H04L12/741 ,  H04L12/46 ,  H04L12/705 ,  H04L1/00

    CPC classification number: H04L45/745 ,  H04L1/00 ,  H04L12/462 ,  H04L12/4641 ,  H04L45/18

    Abstract: A technique is provided for mitigating loops in Ethernet networks. A first port in an Ethernet device receives an Ethernet frame. The frame includes a source identifier, a destination identifier, and a Virtual Local Area Network Identifier (VLAN ID). According to various embodiments, the VLAN ID (VID) has the encoding of both a community group as well as a source bridge ID. A VID database is accessed using the destination identifier and the VID to determine whether the first port has ingress enabled. A filtering database is accessed to determine an egress port for forwarding the Ethernet frame.

    Abstract translation: 提供了一种减轻以太网网络环路的技术。 以太网设备中的第一个端口接收以太网帧。 该帧包括源标识符，目的地标识符和虚拟局域网标识符（VLAN ID）。 根据各种实施例，VLAN ID（VID）具有社区组以及源网桥ID的编码。 使用目标标识符和VID访问VID数据库，以确定第一个端口是否启用了入口。 访问过滤数据库以确定用于转发以太网帧的出口端口。

    E-TREE SERVICE WITH OPTIMAL FORWARDING IN EVPN
    79.
    发明申请
    E-TREE SERVICE WITH OPTIMAL FORWARDING IN EVPN 有权
    在EVPN中进行最佳的E-TREE服务

    公开(公告)号：US20150281096A1

    公开(公告)日：2015-10-01

    申请号：US14231853

    申请日：2014-04-01

    Applicant: Cisco Technology, Inc.

    Inventor： Sami Boutros ,  Ali Sajassi ,  Samer Salam

    IPC: H04L12/813 ,  H04L12/823 ,  H04L12/24 ,  H04L12/801

    CPC classification number: H04L47/20 ,  H04L12/1886 ,  H04L12/462 ,  H04L41/12 ,  H04L45/04 ,  H04L45/48 ,  H04L45/54 ,  H04L45/66 ,  H04L47/16 ,  H04L47/32 ,  H04L47/33

    Abstract: In one embodiment, when an ingress provider edge (PE) device of a computer network domain receives a frame at the ingress PE device destined to a destination media access control (MAC) address, it can determine whether the frame was received on a root or leaf Ethernet ingress segment, and also whether the destination MAC address is located via a root or leaf Ethernet segment. Accordingly, the ingress PE device may either drop or forward the frame based on the ingress Ethernet segment and destination MAC address Ethernet segment being either a root or a leaf, respectively.

    Abstract translation: 在一个实施例中，当计算机网络域的入口提供商边缘（PE）设备接收到目的地媒体访问控制（MAC）地址的入口PE设备处的帧时，它可以确定该帧是否被接收到根或者 叶子以太网入口段，以及目的地MAC地址是否通过根或叶以太网段来定位。 因此，入口PE设备可以基于入口以太网段和目的地MAC地址以太网段分别是根或叶来丢弃或转发帧。

    Ethernet virtual private network system for providing fast protection for access rings
    80.
    发明授权
    Ethernet virtual private network system for providing fast protection for access rings 有权
    以太网虚拟专用网络系统，为接入环提供快速保护

    公开(公告)号：US09001644B2

    公开(公告)日：2015-04-07

    申请号：US13769474

    申请日：2013-02-18

    Applicant: Cisco Technology, Inc.

    Inventor： Samer Salam ,  Ali Sajassi ,  Sami Boutros

    IPC: H04L12/26 ,  H04L12/24 ,  H04L12/437

    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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