公开(公告)号：US11632296B2

公开(公告)日：2023-04-18

申请号：US16588072

申请日：2019-09-30

Applicant: Juniper Networks, Inc.

Inventor： Tarek Saad ,  Raveendra Torvi ,  Vishnu Pavan Beeram

IPC: H04L41/0806 ,  H04L41/0668 ,  H04L45/745 ,  H04L47/125 ,  H04L47/724 ,  H04L61/2592 ,  H04L47/10 ,  H04L61/5007 ,  H04L45/50

Abstract: In general, techniques are described for signaling IP path tunnels for traffic engineering using constraints in an IP network. For example, network devices, e.g., routers, of an IP network may compute an IP path using constraint information and establish the IP path using, for example, Resource Reservation Protocol, to signal the IP path without using MPLS. As one example, the egress router generates a path reservation signaling message that includes an egress IP address that is assigned for use by the routers on the IP path to send traffic of the data flow by encapsulating the traffic with the egress IP address and forwarding toward the egress router. As each router in the IP path receives the path reservation signaling message, the router configures a forwarding state to forward traffic encapsulated with the egress IP address to a next hop along the IP path toward the egress router.

公开(公告)号：US11627086B2

公开(公告)日：2023-04-11

申请号：US17814803

申请日：2022-07-25

Applicant: Cisco Technology, Inc.

Inventor： Ijsbrand Wijnands ,  Neale David Raymond Ranns ,  David Delano Ward ,  David Richard Barach

IPC: H04L12/26 ,  H04L47/125 ,  H04L47/70 ,  H04L47/17 ,  H04L45/50

Abstract: In one embodiment, an offload platform is an compute platform, adjunct to a router or other packet switching device, that performs packet processing operations including determining an egress forwarding value corresponding to the next-hop node of the packet switching device to which to send an offload-platform processed packet. The offload platform downloads forwarding information from the router, and augments it, such as, but not limited to, representing interfaces of the router as identifiable virtual interface(s) on the offload platform, and including each of one or more next-hop nodes of the router represented as an identifiable virtual adjacency and identifiable tunnel (e.g., identified by the egress forwarding value). In one embodiment, the egress forwarding value is an Multiprotocol Label Switching (MPLS) label or Segment Routing Identifier. The router identifies packets of certain packet flows to send to the adjunct offload platform, rather than processing per its routing information base.

公开(公告)号：US11627077B2

公开(公告)日：2023-04-11

申请号：US17068908

申请日：2020-10-13

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Pranjal Kumar Dutta

IPC: H04L45/50 ,  H04L45/64 ,  H04L69/18 ,  H04L69/324

Abstract: Various example embodiments for supporting reliability of an overlay are presented herein. Various example embodiments for supporting reliability of an overlay may support reliable delivery of overlay packets. Various example embodiments for supporting reliable delivery of overlay packets may support reliable delivery of overlay packets of a label switching protocol. Various example embodiments for supporting reliability of an overlay may support reliable delivery of overlay packets based on a reliable transport layer. The reliable transport layer may be provided using a reliable transport layer protocol. The reliable transport layer protocol may be a connection-oriented protocol, may be configured to support flow control, may be configured to support congestion control, or the like.

公开(公告)号：US20230084909A1

公开(公告)日：2023-03-16

申请号：US18050188

申请日：2022-10-27

Applicant: Juniper Networks, Inc.

Inventor： Vijay Anand KARUPPIAH ,  Mohit JOSHI ,  Suresh VISHWANATHAN ,  Sankar RAMAMOORTHI

IPC: H04L47/22 ,  H04L47/2483 ,  H04L45/50

Abstract: A first network device may receive first traffic of a session that involves a service. The first network device may identify that the service is configured for distributed node processing. The first network device may identify a second network device that is configured for distributed node processing. The first network device may identify a state machine that is associated with the service. The first network device may determine, based on the state machine, a first function and a second function, wherein the first function is identified by a first label and the second function is identified by a second label. The first network device may process the first traffic based on the first function. The first network device may provide, to the second network device, the first traffic and the second label to permit the second network device to process second traffic in association with the second function.

公开(公告)号：US11606288B2

公开(公告)日：2023-03-14

申请号：US17113555

申请日：2020-12-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Huang ,  Yongjian Hu

IPC: H04L45/50 ,  H04L12/46 ,  H04L45/00 ,  H04L45/28

Abstract: This application provides a communication method and a communications apparatus. The method can include performing extension based on an existing operation, administration, and maintenance (OAM) packet after an intermediate node in a path of a segment routing traffic engineering (SR-TE) tunnel senses a bit error fault, to support a bit error switching function. That is, the method can include adding, to the OAM packet, identification information used to identify that signal degradation occurs in the SR-TE tunnel. As a result, it is ensured that the SR-TE tunnel supports the bit error switching function of the intermediate node, and a customer service can be effectively prevented from being damaged.

公开(公告)号：US11606250B2

公开(公告)日：2023-03-14

申请号：US16588072

申请日：2019-09-30

Applicant: Juniper Networks, Inc.

Inventor： Tarek Saad ,  Raveendra Torvi ,  Vishnu Pavan Beeram

IPC: H04L41/0806 ,  H04L41/0668 ,  H04L45/745 ,  H04L47/125 ,  H04L47/724 ,  H04L61/2592 ,  H04L47/10 ,  H04L61/5007 ,  H04L45/50

Abstract: In general, techniques are described for signaling IP path tunnels for traffic engineering using constraints in an IP network. For example, network devices, e.g., routers, of an IP network may compute an IP path using constraint information and establish the IP path using, for example, Resource Reservation Protocol, to signal the IP path without using MPLS. As one example, the egress router generates a path reservation signaling message that includes an egress IP address that is assigned for use by the routers on the IP path to send traffic of the data flow by encapsulating the traffic with the egress IP address and forwarding toward the egress router. As each router in the IP path receives the path reservation signaling message, the router configures a forwarding state to forward traffic encapsulated with the egress IP address to a next hop along the IP path toward the egress router.

公开(公告)号：US20230065908A1

公开(公告)日：2023-03-02

申请号：US18046741

申请日：2022-10-14

Applicant: Juniper Networks, Inc.

Inventor： Vinod Kumar N ,  Robert W. Kebler ,  Ashok Patrick Jude Manoharan ,  Hariharan Boopathy

IPC: H04L45/16 ,  H04L12/18 ,  H04L12/46 ,  H04L45/50 ,  H04L45/28

Abstract: In some examples, a method includes receiving, by an egress network device for a network, messages from each of a plurality of ingress network devices for the network, wherein each of the messages specifies a multicast source, a multicast group, and an upstream multicast hop weight value for multicast traffic for the multicast source and the multicast group; selecting, by the egress network device and based on the upstream multicast hop weight values specified by the received messages, one of the plurality of ingress network devices to which to send a multicast join message of a plurality of multicast join messages for the multicast source and multicast group; and sending, by the egress network device, the multicast join message to the selected one of the plurality of ingress network devices.

公开(公告)号：US11588683B2

公开(公告)日：2023-02-21

申请号：US16995706

申请日：2020-08-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Linda Dunbar ,  Katherine Zhao

IPC: H04L41/0806 ,  G06F9/455 ,  H04L12/46 ,  H04L12/66 ,  H04L45/24 ,  H04L45/50 ,  H04L45/586 ,  H04L9/40 ,  H04L67/104 ,  H04L67/141 ,  H04L67/53

Abstract: Techniques are presented to stitch existing virtual private networks (VPNs), such as MPLS based VPNs, with virtual private clouds (VPCs) in public cloud data centers. The stitching architecture can be realized by configuring a virtual routing application (VRA) in the VPCs and configuring virtual routing applications and a virtual routing application controller in the existing VPN. For VPCs in public clouds that do not have a VRA, traffic can be default routed to VPCs with a VRA.

公开(公告)号：US20230036049A1

公开(公告)日：2023-02-02

申请号：US17938717

申请日：2022-10-07

Applicant: Juniper Networks, Inc.

Inventor： Aldrin ISAAC ,  Savithri H. VENKATACHALAPATHY ,  Kamatchi S. GOPALAKRISHNAN

IPC: H04L69/28 ,  H04L12/18 ,  H04L45/00 ,  H04L45/50 ,  H04L45/64 ,  H04L61/5007 ,  H04L12/46

Abstract: A network device may receive, from a timing source of a network, timing information. The network device may identify a client device to which the timing information is to be provided, wherein the network device provides an interface between the client device and the network. The network device may select a virtual network address to associate with a timing agent of the network device, wherein the virtual network address is within an address range that is reachable by the client device. The network device may provide to the client device, and via a network layer communication, a timing control packet comprising the timing information, wherein the timing control packet identifies the virtual network address as a source network address of the timing control packet, and wherein the timing information is to be used by the client device to update a clock of the client device.

公开(公告)号：US11563697B2

公开(公告)日：2023-01-24

申请号：US16798896

申请日：2020-02-24

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L49/00 ,  H04L45/50

Abstract: A router includes a memory configured to store a plurality of label spaces for each label space type used in a communication system. The plurality of label spaces store labels that identify virtual links between nodes of the communication system. The router also includes a processor configured to allocate a plurality of label space identifiers to the plurality of label spaces and to route packets based on labels and label space identifiers included in the packets. The router further includes a transceiver configured to transmit or receive the packets including the labels and the label space identifiers.