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    Targeted selection of cascade ports
    11.
    发明授权
    Targeted selection of cascade ports 有权

    公开(公告)号：US10911296B2

    公开(公告)日：2021-02-02

    申请号：US15933902

    申请日：2018-03-23

    Applicant: Juniper Networks, Inc.

    Inventor： Vishnu Janardhanan S ,  Babu Singarayan ,  Puneet Kedia ,  Pratibha Goel

    IPC: G06F15/173 ,  H04L12/24 ,  H04L12/911 ,  H04L12/947 ,  H04L12/46 ,  H04L12/933 ,  H04L12/803 ,  H04L12/743 ,  H04L12/863 ,  H04L12/723

    Abstract: Techniques are described for providing targeted selection of cascade ports of an aggregation device. In one example, the disclosed techniques enable dynamic assignment of active and backup cascade ports of an aggregation device for each extended port of satellite devices. In this example, rather than allocating resources for each of the extended ports of the satellite devices on all of the cascade ports of the aggregation device, the aggregation device instead allocates resources for each of the extended port only on the assigned active and backup cascade ports for the respective one of the extended ports of the satellite devices. The techniques are also described for providing traffic steering to a backup cascade port in the event the assigned active cascade port is unreachable, and, if the cascade port remains unreachable for a specified duration, the aggregation device may assign new active and backup cascade ports for the extended port.

    Core isolation for logical tunnels stitching multi-homed EVPN and L2 circuit
    15.
    发明授权
    Core isolation for logical tunnels stitching multi-homed EVPN and L2 circuit 有权

    公开(公告)号：US11323308B2

    公开(公告)日：2022-05-03

    申请号：US16235230

    申请日：2018-12-28

    Applicant: Juniper Networks, Inc.

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

    IPC: H04L12/24 ,  H04L41/0654 ,  H04L12/46 ,  H04L45/02 ,  H04L69/324

    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.

    Optimized multicast forwarding with a cache
    16.
    发明授权
    Optimized multicast forwarding with a cache 有权

    公开(公告)号：US11070464B2

    公开(公告)日：2021-07-20

    申请号：US16162323

    申请日：2018-10-16

    Applicant: Juniper Networks, Inc.

    Inventor： Sri Karthik Goud Gadela ,  Sharmila Koppula ,  Babu Singarayan ,  Sunanda L. Kommula

    IPC: H04L12/761 ,  H04L12/707 ,  H04L12/747 ,  H04L12/741 ,  H04L12/927 ,  H04L12/947

    Abstract: The techniques describe forwarding multicast traffic using a multi-level cache in a network device forwarding plane for determining a set of outgoing interfaces of the network device on which to forward the multicast traffic. For example, a multi-level cache is configured to store a multicast identifier of a multicast packet and multicast forwarding information associated with the multicast identifier, such as identification of one or more egress packet processors of the network device to which the multicast packet is to be sent for forwarding to the set of one or more egress network devices, and/or outgoing interfaces of the network device toward each egress network device of the set of one or more egress network devices. The multi-level cache is also configured to store respective multicast identifiers that are to be encapsulated with outgoing multicast packets that are forwarded to the set of one or more egress network devices.

    NETWORK AS A SERVICE USING VIRTUAL NODES
    17.
    发明申请
    NETWORK AS A SERVICE USING VIRTUAL NODES 审中-公开

    公开(公告)号：US20200021522A1

    公开(公告)日：2020-01-16

    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 ,  H04L12/721 ,  H04L12/947 ,  H04L12/713

    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.

    Fabric path context-based forwarding for virtual nodes
    18.
    发明授权
    Fabric path context-based forwarding for virtual nodes 有权

    公开(公告)号：US10382333B2

    公开(公告)日：2019-08-13

    申请号：US15610233

    申请日：2017-05-31

    Applicant: Juniper Networks, Inc.

    Inventor： Jeyananth Minto Jeganathan ,  Aman Kapoor ,  Raghavendra Mallya ,  Ashutosh K. Grewal ,  Kaliraj Vairavakkalai ,  Babu Singarayan

    IPC: H04L12/721 ,  H04L12/723 ,  H04L12/741 ,  H04L12/713 ,  H04L12/751 ,  H04L12/46 ,  H04L12/755

    Abstract: In some examples, a method includes selecting, by a first virtual routing node of a single-chassis network device having a plurality of forwarding components and a plurality of fabric links coupling respective pairs of the plurality of forwarding components at respective fabric interfaces of the plurality of forwarding components, a fabric interface of a forwarding component of the plurality of forwarding components that has an egress interface toward a network destination and that is associated with the first virtual routing node; in response to receiving a message specifying the fabric interface, storing, by the second virtual routing node to a context forwarding table of the second virtual node, the fabric interface as a next hop for the network destination; selecting, by the second virtual routing node and based on the context forwarding table and a context next hop in a first forwarding table pointing to the context forwarding table, the fabric interface for forwarding network packets destined for the network destination.

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