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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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公开(公告)号：US11463269B2
公开(公告)日：2022-10-04
申请号：US16825732
申请日：2020-03-20
Applicant: Juniper Networks, Inc.
Inventor： Vikram Nagarajan , Robert W. Kebler , Dinesh Sivaraj , Vinod Kumar N
Abstract: The techniques describe example network systems providing core-facing designated forwarder (DF) election to forward multicast traffic into an EVPN of a core network. For example, a first PE device of a plurality of PE devices participating in an EVPN comprises one or more processors operably coupled to a memory, wherein the one or more processors are configured to: determine that a first multicast traffic flow has started for the first PE device; in response, send a source-active (SA) route to indicate the first multicast traffic flow has started for the first PE device; receive, from a second PE device, a second SA route that indicates that a second multicast traffic flow has started for the second PE device; and perform an election of a core-facing DF from among the first PE device and second PE device, wherein the core-facing DF is configured to forward the multicast traffic into the EVPN.
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14.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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15.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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Patent Agency Ranking
16.发明授权公开(公告)号：US11323279B1
公开(公告)日：2022-05-03
申请号：US17196553
申请日：2021-03-09
Applicant: Juniper Networks, Inc.
Inventor： Vinod Kumar N , Robert W. Kebler , Vikram Nagarajan
Abstract: An example network device includes memory configured to store packet data and processor circuitry coupled to the memory. The processing circuitry is configured to determine that a first host device has moved from a first access network of an Ethernet virtual private network (EVPN) associated with the first PE router to a second access network of the EVPN, wherein the first host device is interested in receiving traffic of a first multicast group. The processing circuitry is configured to determine whether any other host device on the first access network of the network device is interested in receiving traffic of the first multicast group. Based on no other host device on the first access network of the network device being interested in receiving multicast traffic of the first multicast group, the processing circuitry is configured to delete state associated with the first multicast group.
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17.发明授权公开(公告)号：US12177134B1
公开(公告)日：2024-12-24
申请号：US17821219
申请日：2022-08-22
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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公开(公告)号：US11811509B2
公开(公告)日：2023-11-07
申请号：US17248585
申请日：2021-01-29
Applicant: Juniper Networks, Inc.
Inventor： Vinod Kumar N , Robert W. Kebler , Vikram Nagarajan
IPC: H04L12/18
CPC classification number: H04L12/18
Abstract: An example egress network device includes at least one computer processor and a memory. The memory includes instructions that cause the at least one computer processor to receive messages from each of a plurality of ingress network devices. Each message specifies a multicast source as an anycast address that belongs to two or more sources, a multicast group, and a customer site identifier that uniquely identifies a customer network device via which the anycast address is reachable. The instructions cause the at least one computer processor to select, based on the customer site identifiers, 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. The instructions cause the at least one computer processor to send the multicast join message to the selected one of the plurality of ingress network devices.
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公开(公告)号：US11425034B1
公开(公告)日：2022-08-23
申请号：US17301272
申请日：2021-03-30
Applicant: Juniper Networks, Inc.
Inventor： Hariharan Boopathy , Vinod Kumar N , Ravi M R
IPC: H04L45/28 , H04L45/00 , H04L43/0823 , H04L43/0817 , H04L45/42
Abstract: An example network device includes a memory; and processing circuitry configured to: determine a primary path between the network device and a second network device; determine candidate backup paths between the network device and the second network device; in response to a determination that a first candidate backup path of the candidate backup paths satisfies a first priority criteria, select the first candidate backup path as a backup path; in response to a determination that a second candidate backup path of the candidate backup paths satisfies a second priority criteria, select the second candidate backup path as the backup path; and program a packet processor of the network device with the primary path and the backup path. The first priority criteria and the second priority criteria can be based on a risk of simultaneous failure of the primary path and a candidate backup path of the plurality of backup path.
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公开(公告)号：US20220060407A1
公开(公告)日：2022-02-24
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
IPC: H04L12/761 , H04L12/723 , H04L12/703 , H04L12/18 , H04L12/46
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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