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    Techniques for preferred path local switching in EVPN-VPWS
    22.
    发明授权
    Techniques for preferred path local switching in EVPN-VPWS 有权

    公开(公告)号：US11108683B2

    公开(公告)日：2021-08-31

    申请号：US16531211

    申请日：2019-08-05

    Applicant: Cisco Technology, Inc.

    Inventor： Patrice Brissette ,  Ali Sajassi

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

    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.

    Mechanism for optimized customer MAC address flushing in PBB-EVPN
    23.
    发明授权
    Mechanism for optimized customer MAC address flushing in PBB-EVPN 有权

    公开(公告)号：US10367783B2

    公开(公告)日：2019-07-30

    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: H04L29/12

    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.

    EVPN IMPLICIT ALIASING
    24.
    发明申请
    EVPN IMPLICIT ALIASING 审中-公开

    公开(公告)号：US20180309596A1

    公开(公告)日：2018-10-25

    申请号：US15492593

    申请日：2017-04-20

    Applicant: Cisco Technology, Inc.

    Inventor： Patrice Brissette ,  Luc André Burdet ,  Samir Thoria

    IPC: H04L12/46 ,  H04L12/723 ,  H04L29/08 ,  H04H20/16

    CPC classification number: H04L12/4679 ,  H04H20/16 ,  H04L45/50 ,  H04L61/6086 ,  H04L67/327

    Abstract: Presented herein is an exemplified system and method that implicit aliasing in an EVPN network having provider edge nodes in a network infrastructure (e.g., a MPLS infrastructure). In particular, the exemplified system and method employ a Border Gateway Protocol (BGP) based EVPN construct that facilitates multiplexing across large number of different physical interfaces, among multiple device manufacturers and vendors, while providing implicit antialiasing functionality, and being fully supportive of EVPN capabilities. In an embodiment, a method is disclosed that joins the reachability information from a first network device and a second network device, in response to receiving a first EVPN advertisement from the first network device and receiving a second EVPN advertisement from the second network device, such that traffic later transmitted in associated with the first EVI or the first ESI are routable to both the first network device and the second network device.

    FAST CONVERGENCE FOR FAILURES OF LARGE SCALE VIRTUAL ETHERNET SEGMENTS IN EVPN AND PBB-EVPN
    25.
    发明申请
    FAST CONVERGENCE FOR FAILURES OF LARGE SCALE VIRTUAL ETHERNET SEGMENTS IN EVPN AND PBB-EVPN 有权

    公开(公告)号：US20180052738A1

    公开(公告)日：2018-02-22

    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: G06F11/14 ,  H04L12/703 ,  H04L12/707 ,  H04L12/741

    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.

    SOURCE-PROVISIONED SERVICES INFRASTRUCTURE
    27.
    发明公开
    SOURCE-PROVISIONED SERVICES INFRASTRUCTURE 审中-公开

    公开(公告)号：US20240163197A1

    公开(公告)日：2024-05-16

    申请号：US18416882

    申请日：2024-01-18

    Applicant: Cisco Technology, Inc.

    Inventor： Patrice Brissette ,  Thierry Couture ,  Karen Michele Cadora ,  Jiri Chaloupka ,  Suresh Basavarajappa

    IPC: H04L45/02 ,  H04L12/46 ,  H04L12/66 ,  H04L45/74

    CPC classification number: H04L45/02 ,  H04L12/4641 ,  H04L12/66 ,  H04L45/74

    Abstract: Techniques for a head-end node in one or more network autonomous systems to utilize a protocol to instantiate services on tail-end nodes. The head-end node can use a service request mechanism that is enabled by the protocol to request service instantiation on the tail-end node without a network operator having to manually configure the tail-end node, or even having access to the tail-end node. Additionally, the protocol may provide mechanisms to define handling attributes for traffic of the service (e.g., quality of service (QoS) attributes, Maximum Transmission Unit (MTU) settings, etc.), service acknowledgement mechanisms for the head-end node to determine that the service was instantiated on the tail-end node, and so forth. In this way, a head-end node can be used to instantiate a service on a tail-end node without a network operator having to have direct access to the tail-end node to manually configure the tail-end node.

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