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    Network as a service using virtual nodes
    1.
    发明授权
    Network as a service using virtual nodes 有权

    公开(公告)号：US10911351B2

    公开(公告)日：2021-02-02

    申请号：US16141530

    申请日：2018-09-25

    Applicant: Juniper Networks, Inc.

    Inventor： Babu Singarayan ,  Nitin Kumar ,  Javier Antich ,  Srikanth Subramanian

    IPC: H04L12/723 ,  H04L12/713 ,  H04L12/721 ,  H04L12/947 ,  H04L12/46

    Abstract: The techniques describe a network device comprising one or more processors configured to: receive configuration data configuring a plurality of virtual network nodes, wherein the configuration data configures a virtual client node including a corresponding line card having a port connected to a first customer network device, and configures a virtual core node including a corresponding line card having a port connected to a core network; provision a layer-2 (L2) circuit that includes, as an access interface, an interface logically connecting the virtual client node and virtual core node, wherein the L2 circuit provides connectivity between the virtual client node and a remote virtual client node; and forward, via the L2 circuit, packets between the virtual client node and the remote virtual client node to realize a logical network between the first customer network device and a second customer network device connected to the remote virtual PE node.

    SPLIT-HORIZON PACKET FORWARDING IN A MULTI-HOME PBB-EVPN NETWORK
    3.
    发明申请
    SPLIT-HORIZON PACKET FORWARDING IN A MULTI-HOME PBB-EVPN NETWORK 审中-公开

    公开(公告)号：US20170250904A1

    公开(公告)日：2017-08-31

    申请号：US15055061

    申请日：2016-02-26

    Applicant: Juniper Networks, Inc.

    Inventor： Babu Singarayan ,  Tapraj Singh ,  Vikas Vidyalal Patel ,  Swamy Sadashivaiah Renu Kananda

    IPC: H04L12/721 ,  H04L12/707 ,  H04L12/46

    CPC classification number: H04L45/66 ,  H04L12/4641 ,  H04L45/22

    Abstract: Techniques are described to provide split-horizon packet forwarding so as to ensure that packets from the customer network that are injected into the provider backbone bridging Ethernet Virtual Private Network (PBB-EVPN) by one of the provider edge (PE) devices of the multi-homed Ethernet segment are not forwarded back toward the customer network by a different PE device connected to the same multi-homed Ethernet segment. For example, a method may comprise receiving a packet via a core-facing interface of a first PE device, determining the Ethernet segment associated with the PE devices by a lookup operation based on keys of the packet; in response to determining the Ethernet segment, supplanting the core-facing interface of the first PE device with a virtual interface associated with the keys, and forwarding the packet to a second CE device without forwarding the received packet back to the Ethernet segment associated with the first PE device.

    Connecting virtual nodes in a network device using abstract fabric interfaces
    7.
    发明授权
    Connecting virtual nodes in a network device using abstract fabric interfaces 有权

    公开(公告)号：US10511546B2

    公开(公告)日：2019-12-17

    申请号：US15844338

    申请日：2017-12-15

    Applicant: Juniper Networks, Inc.

    Inventor： Babu Singarayan ,  Nitin Kumar ,  Raghavendra Mallya ,  Jeyananth Minto Jeganathan ,  Kaliraj Vairavakkalai

    IPC: H04L12/933 ,  H04L12/947 ,  H04L12/715 ,  H04L12/721 ,  H04L12/751 ,  H04L12/931

    Abstract: In one example, a management component executing on a single-chassis network device configures a virtual node with an abstract fabric interface having, as a destination address, identifiers of packet processors (e.g., PTFE-IDs) assigned to the virtual node on the other end of the abstract fabric interface. The management component of the single-chassis network device pre-creates an underlay network by using the fabric links at the packet processor. When the management component creates and connects an abstract fabric interface on the virtual nodes, the management component forms an overlay network and attaches the overlay network to the underlay network, e.g., by programming the forwarding plane packet processor, to connect the virtual nodes. However, users of the network device, external devices, and routing protocols will not view the abstract fabric interface as an overlay interface, but as a regular Ethernet interface (e.g., a Gigabit Ethernet interface).

    CORE ISOLATION FOR LOGICAL TUNNELS STITCHING MULTI-HOMED EVPN AND L2 CIRCUIT
    10.
    发明申请
    CORE ISOLATION FOR LOGICAL TUNNELS STITCHING MULTI-HOMED EVPN AND L2 CIRCUIT 有权

    公开(公告)号：US20220224593A1

    公开(公告)日：2022-07-14

    申请号：US17657382

    申请日：2022-03-31

    Applicant: Juniper Networks, Inc.

    Inventor： Channasangamesh S. Hugar ,  Babu Singarayan ,  Sharmila Koppula ,  Soumyodeep Joarder ,  Sudhin Jacob

    IPC: H04L41/0654 ,  H04L12/46 ,  H04L45/02

    Abstract: Techniques are described to provide layer 2 (L2) circuit failover in the event connectivity to an Ethernet Virtual Private Network (EVPN) instance is lost. For example, if one of multi-homed provider edge (PE) devices loses connectivity to the EVPN instance, the PE device may mark its customer-facing interface as down and propagate the interface status to the access node such that the access node may update its routing information to switch L2 circuits to another one of the multi-homed PE devices having reachability to the EVPN instance. In some examples, the plurality of PE devices may further implement Connectivity Fault Management (CFM) techniques to propagate the interface status to the access node such that the access node may update its forwarding information to send traffic on a different L2 circuit to another one of the multi-homed PE devices having reachability to the EVPN instance.

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