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    Techniques for preferred path local switching in EVPN-VPWS
    101.
    发明授权
    Techniques for preferred path local switching in EVPN-VPWS 有权

    公开(公告)号：US10454814B2

    公开(公告)日：2019-10-22

    申请号：US15619301

    申请日：2017-06-09

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Patrice Brissette ,  Ali Sajassi

    IPC: H04L12/28 ,  H04L12/703 ,  H04L12/715 ,  H04L12/46 ,  H04L12/413 ,  H04L12/707

    Abstract: In one embodiment, a method includes, subsequent to receipt of a packet from a first customer network node destined for a second customer network node at a first provider network node, determining whether a local connection exists between the first provider network node and the second customer network node, the provider network node forming part of an Ethernet Virtual Private Network (“EVPN”)—Virtual Private Wire Service (“VPWS”) domain; if a local connection is determined to exist between the first provider network node and the second customer network node, determining whether the local connection has failed; if the local connection is determined not to have failed, switching the packet to the second customer network node via the local connection instead of via the EVPN-VPWS domain; and if the local connection is determined to have failed, switching the packet to the second customer network node via the EVPN-VPWS domain.

    Fast convergence for failures of large scale virtual ethernet segments in EVPN and PBB-EVPN
    102.
    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.

    TECHNIQUES FOR PREFERRED PATH LOCAL SWITCHING IN EVPN-VPWS
    104.
    发明申请
    TECHNIQUES FOR PREFERRED PATH LOCAL SWITCHING IN EVPN-VPWS 审中-公开

    公开(公告)号：US20180359178A1

    公开(公告)日：2018-12-13

    申请号：US15619301

    申请日：2017-06-09

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Patrice Brissette ,  Ali Sajassi

    IPC: H04L12/703 ,  H04L12/715 ,  H04L12/46

    CPC classification number: H04L45/28 ,  H04L12/413 ,  H04L12/4641 ,  H04L45/04 ,  H04L45/22

    Abstract: In one embodiment, a method includes, subsequent to receipt of a packet from a first customer network node destined for a second customer network node at a first provider network node, determining whether a local connection exists between the first provider network node and the second customer network node, the provider network node forming part of an Ethernet Virtual Private Network (“EVPN”)—Virtual Private Wire Service (“VPWS”) domain; if a local connection is determined to exist between the first provider network node and the second customer network node, determining whether the local connection has failed; if the local connection is determined not to have failed, switching the packet to the second customer network node via the local connection instead of via the EVPN-VPWS domain; and if the local connection is determined to have failed, switching the packet to the second customer network node via the EVPN-VPWS domain.

    Ethernet segment aware MAC address learning
    106.
    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.

    ETHERNET TAG MAPPING IN VIRTUAL PRIVATE WIRE SERVICE USING ETHERNET VIRTUAL PRIVATE NETWORK
    108.
    发明申请
    ETHERNET TAG MAPPING IN VIRTUAL PRIVATE WIRE SERVICE USING ETHERNET VIRTUAL PRIVATE NETWORK 审中-公开

    公开(公告)号：US20180109400A1

    公开(公告)日：2018-04-19

    申请号：US15295674

    申请日：2016-10-17

    Applicant: Cisco Technology, Inc.

    Inventor： Patrice Brissette ,  Ali Sajassi

    IPC: H04L12/46 ,  H04L12/741 ,  H04L12/723

    CPC classification number: H04L12/4633 ,  H04L12/4679 ,  H04L45/50 ,  H04L45/745

    Abstract: Presented herein is an exemplified system and method that facilitate a point-to-point (P2P) service operation, via EVPN VPWS service tunnels, between customer edge nodes and provider edge nodes in a network infrastructure (e.g., a MPLS infrastructure). In particular, the exemplified system and method employ an EVPN BGP construct that facilitates multiplexing across large number of different physical interfaces, among multiple device manufacturers and vendors, while reducing signaling among the nodes, and being fully supportive of EVPN capabilities. In an embodiment, a method is disclosed that establishes VPWS Service service-tunnels, which is associated with an Ethernet virtual private network (EVPN) Ethernet Auto-Discovery (EAD) route identifies the service tunnel as being a VPWS-ID service, a single tag service, or a double tag service.

    MECHANISM FOR OPTIMIZED CUSTOMER MAC ADDRESS FLUSHING IN PBB-EVPN
    109.
    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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