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    Fast convergence for failures of large scale virtual ethernet segments in EVPN and PBB-EVPN
    12.
    发明授权
    Fast convergence for failures of large scale virtual ethernet segments in EVPN and PBB-EVPN 有权

    公开(公告)号：US10824509B2

    公开(公告)日：2020-11-03

    申请号：US16567953

    申请日：2019-09-11

    Applicant: Cisco Technology, Inc.

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

    IPC: H04W72/04 ,  G06F11/14 ,  H04L12/707 ,  H04L12/741 ,  H04L12/703

    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.

    FAST CONVERGENCE FOR FAILURES OF LARGE SCALE VIRTUAL ETHERNET SEGMENTS IN EVPN AND PBB-EVPN
    14.
    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。

    Method and system for network traffic diversion
    15.
    发明授权
    Method and system for network traffic diversion 有权

    公开(公告)号：US12003406B2

    公开(公告)日：2024-06-04

    申请号：US17699237

    申请日：2022-03-21

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Patrice Brissette ,  Luc Andre Burdet ,  Jiri Chaloupka ,  Mei Zhang ,  Tarek Saad

    IPC: H04L45/00 ,  H04L45/28 ,  H04L45/50

    CPC classification number: H04L45/22 ,  H04L45/28 ,  H04L45/50

    Abstract: A method, network device, and computer program product for network traffic diversion are disclosed. In one embodiment, a method according to the present disclosure includes receiving a frame at a core edge node that is a member of a redundancy group (where the frame comprises network address information and a packet), and determining whether a link is affected by a network failure. The frame was sourced by a remote core edge node that is not a member of the redundancy group, and the network address information indicates that the packet is to be forwarded via the link. In response to the link being affected by the network failure, the method further includes generating a modified frame and forwarding the modified frame to another core edge node. The generating comprises including a redirect label in the modified frame. The another core edge node is another member of the redundancy group.

    Method and system for network traffic diversion
    16.
    发明授权
    Method and system for network traffic diversion 有权

    公开(公告)号：US11316777B2

    公开(公告)日：2022-04-26

    申请号：US16686896

    申请日：2019-11-18

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Patrice Brissette ,  Luc Andre Burdet ,  Jiri Chaloupka ,  Mei Zhang ,  Tarek Saad

    IPC: H04L12/707 ,  H04L45/00 ,  H04L45/50 ,  H04L45/28

    Abstract: A method, network device, and computer program product for network traffic diversion are disclosed. In one embodiment, a method according to the present disclosure includes receiving a frame at a core edge node that is a member of a redundancy group (where the frame comprises network address information and a packet), and determining whether a link (to which the core edge node is communicatively coupled) is affected by a network failure. The frame was sourced by a remote core edge node that is not a member of the redundancy group, and the network address information indicates that the packet is to be forwarded via the link. In response to the link being affected by the network failure, the method further includes generating a modified frame and forwarding the modified frame to another core edge node. The generating comprises including a redirect label in the modified frame. The another core edge node is another member of the redundancy group.

    Fast convergence for failures of large scale virtual ethernet segments in EVPN and PBB-EVPN
    18.
    发明授权
    Fast convergence for failures of large scale virtual ethernet segments in EVPN and PBB-EVPN 有权

    公开(公告)号：US10417095B2

    公开(公告)日：2019-09-17

    申请号：US15795871

    申请日：2017-10-27

    Applicant: Cisco Technology, Inc.

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

    IPC: H04W72/04 ,  G06F11/14 ,  H04L12/707 ,  H04L12/741 ,  H04L12/703

    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.

    Ethernet segment aware MAC address learning
    19.
    发明授权
    Ethernet segment aware MAC address learning 有权

    公开(公告)号：US10033636B1

    公开(公告)日：2018-07-24

    申请号：US15098862

    申请日：2016-04-14

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Mei Zhang ,  Yushun Zhang ,  Ali Sajassi ,  Thomas Eric Ryle ,  Richard Thomas Wood ,  Nathan Allen Mitchell

    IPC: H04L12/28 ,  H04L12/741 ,  H04L12/721 ,  H04L12/46

    Abstract: A computer-implemented method for assisting Ethernet Segment (ES)-aware media access control (MAC) address learning is disclosed. The method includes receiving, at a provider edge (PE) device, a data packet from a core network, the data packet identifying an ES from which the data packet originated and identifying a MAC address as a source MAC address; determining whether the PE device has an Ethernet connection in the ES identified by the data packet; and, upon positive determination, associating the MAC address identified as the source MAC address of the data packet to a bridge port, at the PE device, of the Ethernet connection in the ES identified by the data packet.

    MECHANISM FOR OPTIMIZED CUSTOMER MAC ADDRESS FLUSHING IN PBB-EVPN
    20.
    发明申请
    MECHANISM FOR OPTIMIZED CUSTOMER MAC ADDRESS FLUSHING IN PBB-EVPN 审中-公开

    公开(公告)号：US20180048563A1

    公开(公告)日：2018-02-15

    申请号：US15795605

    申请日：2017-10-27

    Applicant: Cisco Technology, Inc.

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

    IPC: 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.

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