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公开(公告)号：US11431614B2
公开(公告)日：2022-08-30
申请号：US16996449
申请日：2020-08-18
Applicant: Juniper Networks, Inc.
Inventor： Vinod Kumar N , Robert W. Kebler , Ashok Patrick Jude Manoharan , Hariharan Boopathy
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.
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公开(公告)号：US10257074B1
公开(公告)日：2019-04-09
申请号：US14871006
申请日：2015-09-30
Applicant: Juniper Networks, Inc.
Inventor： Nischal Singh , Rahul Unnikrishnan , Hariharan Boopathy
IPC: H04L12/761 , H04L12/707 , H04L12/26 , H04L29/08
Abstract: Techniques are described for avoiding traffic loss in a network when a designated router (DR) for a L2 broadcast communication domain loses its route toward a multicast traffic source. The disclosed techniques may be utilized in a scenario where a receiver is multi-homed to a DR network device and a non-DR network device by a L2 broadcast communication domain. Both the DR and the non-DR network devices receive a request from the receiver identifying a multicast group in which the receiver is interested. The non-DR network device monitors traffic injected into the L2 broadcast communication domain by the DR in order to determine whether the DR has lost the route to the source of the multicast group. If the DR has lost the route, the non-DR network device performs a repair by sending the multicast data traffic for the multicast group to the receiver on the L2 broadcast communication domain.
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公开(公告)号：US10129075B2
公开(公告)日：2018-11-13
申请号：US15855595
申请日：2017-12-27
Applicant: Juniper Networks, Inc.
Inventor： Nischal Singh , Hariharan Boopathy , Rahul Unnikrishnan
IPC: H04L12/24 , H04L12/18 , H04L12/761
Abstract: Techniques are described for enhancements to Protocol Independent Multicast (PIM) to support multicast only fast re-route (MoFRR) over a remote loop free alternate (RLFA) backup path in a network. This disclosure describes a modified PIM control message having a new PIM message type and an additional field to indicate an address of a RLFA network device in the RLFA backup path. According to techniques of this disclosure, network devices along the RLFA backup path are configured to forward the modified PIM control message toward the RLFA network device instead of toward a source of a requested multicast group. When the RLFA network device receives the modified PIM control message, the RLFA network device is configured to forward a conventional PIM control message towards the source of the requested multicast group. In this way, PIM can be used to provide MoFRR over a RLFA backup path.
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Patent Agency Ranking
公开(公告)号：US20240137307A1
公开(公告)日：2024-04-25
申请号：US18400881
申请日：2023-12-29
Applicant: Juniper Networks, Inc.
Inventor： Vinod Kumar N , Robert W. Kebler , Ashok Patrick Jude Manoharan , Hariharan Boopathy
CPC classification number: H04L45/16 , H04L12/185 , H04L12/4641 , H04L45/28 , H04L45/50
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.
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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
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.
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16.发明授权公开(公告)号：US11425056B1
公开(公告)日：2022-08-23
申请号：US16795493
申请日：2020-02-19
Applicant: Juniper Networks, Inc.
Inventor： Sunil Kumar , Hariharan Boopathy , Vinod Kumar N , Ramakrishnan Shanmuga Sundaram
Abstract: Techniques are described for dynamically computing a segment routing policy for a segment routing for traffic engineering (SR-TE) path. For example, in a discontinuous SR network in which SR islands (e.g., groups of neighboring routers that are enabled for segment routing) are separated by one or more routers not enabled for segment routing, instead of returning a failure because one or more routers along a path are not enabled for SR, an ingress router may generate an SR-TE operations, administrations, and management (OAM) Multi-Protocol Label Switching (MPLS) traceroute packet send the packet to a first border router of the RSVP-enabled devices along a computed path to trigger the creation of a resource reservation Label Switched Path (LSP) through the RSVP-enabled devices. In this way, segment routed LSP may be established to tunnel through the resource reservation LSP for a SR-TE path used in an SR-TE policy.
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17.发明授权公开(公告)号：US11323364B2
公开(公告)日：2022-05-03
申请号：US16905545
申请日：2020-06-18
Applicant: Juniper Networks, Inc.
Inventor： Vinod Kumar N , Robert W. Kebler , Ashok Patrick Jude Manoharan , Hariharan Boopathy
IPC: H04L12/723 , H04L12/46 , H04L12/715 , H04L12/761 , H04L45/50 , H04L45/00 , H04L45/16
Abstract: In some examples, a network device may determine whether a first egress network device is segment routing (SR) aware. Based on the first egress network device being SR aware, the network device may initiate establishment of an SR tunnel toward the first egress network device. The network device may forward multicast traffic on the SR tunnel. The network device may also determine whether a second egress network device is SR aware. Based on the second egress network device not being segment routing aware, the network device may initiate establishment of a non-SR tunnel toward the second egress network device. The network device may forward multicast traffic on the non-SR tunnel.
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公开(公告)号：US20180123869A1
公开(公告)日：2018-05-03
申请号：US15855595
申请日：2017-12-27
Applicant: Juniper Networks, Inc.
Inventor： Nischal Singh , Hariharan Boopathy , Rahul Unnikrishnan
IPC: H04L12/24 , H04L12/18 , H04L12/761
CPC classification number: H04L41/0654 , H04L12/18 , H04L12/185 , H04L45/16
Abstract: Techniques are described for enhancements to Protocol Independent Multicast (PIM) to support multicast only fast re-route (MoFRR) over a remote loop free alternate (RLFA) backup path in a network. This disclosure describes a modified PIM control message having a new PIM message type and an additional field to indicate an address of a RLFA network device in the RLFA backup path. According to techniques of this disclosure, network devices along the RLFA backup path are configured to forward the modified PIM control message toward the RLFA network device instead of toward a source of a requested multicast group. When the RLFA network device receives the modified PIM control message, the RLFA network device is configured to forward a conventional PIM control message towards the source of the requested multicast group. In this way, PIM can be used to provide MoFRR over a RLFA backup path.
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