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：US11438259B2

公开(公告)日：2022-09-06

申请号：US16794190

申请日：2020-02-18

Applicant: Juniper Networks, Inc.

Inventor： Raveendra Torvi ,  Tarek Saad ,  Jonathan C Barth ,  John E. Drake ,  Vishnu Pavan Beeram

IPC: H04L45/00 ,  H04L45/02

Abstract: Support is provided for flexible algorithms, used by the border gateway protocol (BGP) route selection process, in the context of segment routing (SR) Prefix segment identifiers (SIDS) advertised using BGP.

公开(公告)号：US11277334B2

公开(公告)日：2022-03-15

申请号：US16588556

申请日：2019-09-30

Applicant: Juniper Networks, Inc.

Inventor： Abhishek Deshmukh ,  Raveendra Torvi ,  Tarek Saad ,  Vishnu Pavan Beeram

IPC: H04L12/721 ,  H04L45/00 ,  H04L49/00

Abstract: The same prefix segment identifier (SID) may be configured and/or used for either (A) more than one prefix within an interior gateway protocol (IGP) domain, or (B) one prefix with more than one path computation algorithm within the IGP domain by: (a) receiving, by a node in the IGP domain, an IGP advertisement including both (1) a prefix SID and a segment routing global block (SRGB) slice identifier; (b) determining whether or not the SRGB slice identified by the SRGB slice identifier is provisioned on the node; and (c) responsive to a determination that the SRGB slice identified by the SRGB slice identifier is not provisioned on the node, not processing the prefix SID included in the received IGP advertisement, and otherwise responsive to a determination that the SRGB slice identified by the SRGB slice identifier is provisioned on the node, (1) processing the prefix SID and SRGB slice to generate a unique, per SRGB slice, MPLS label for the prefix, and (2) updating a label forwarding information base (LFIB) for the node using the unique, per SRGB slice, label for the prefix and the prefix.

公开(公告)号：US11133958B2

公开(公告)日：2021-09-28

申请号：US16588434

申请日：2019-09-30

Applicant: Juniper Networks, Inc.

Inventor： Raveendra Torvi ,  Abhishek Deshmukh ,  Kireeti Kompella ,  Tarek Saad ,  Vishnu Pavan Beeram ,  Ronald Bonica

IPC: H04L12/437 ,  H04L12/24 ,  H04L12/723

Abstract: A ring node N belonging to a resilient MPLS ring (RMR) provisions and/or configures clockwise (CW) and anti-clockwise (AC) paths on the RMR by: (a) configuring two ring node segment identifiers (Ring-SIDs) on the ring node, wherein a first of the two Ring-SIDs (CW-Ring-SID) is to reach N in a clockwise direction on the ring and a second of the two Ring-SIDs (AC-Ring-SID) is to reach N in an anti-clockwise direction on the ring, and wherein the CW-Ring-SID and AC-Ring-SID are unique within a source packet routing in networking (SPRING) domain including the ring; (b) generating a message including the ring node's CW-Ring-SID and AC-Ring-SID; and (c) advertising the message, via an interior gateway protocol, for receipt by other ring nodes belonging to the ring such that (1) a clockwise multipoint-to-point path (CWP) is defined such that every other one of the ring nodes belonging to the ring can be an ingress for the CWP and such that only the node is an egress for the CWP, and (2) an anti-clockwise multipoint-to-point path (ACP) is defined such that every other one of the ring nodes belonging to the ring can be an ingress for the ACP and such that only the node is an egress for the ACP.

公开(公告)号：US20210014084A1

公开(公告)日：2021-01-14

申请号：US16588434

申请日：2019-09-30

Applicant: Juniper Networks, Inc.

Inventor： Raveendra Torvi ,  Abhishek Deshmukh ,  Kireeti Kompella ,  Tarek Saad ,  Vishnu Pavan Beeram ,  Ronald Bonica

IPC: H04L12/437 ,  H04L12/723 ,  H04L12/24

Abstract: A ring node N belonging to a resilient MPLS ring (RMR) provisions and/or configures clockwise (CW) and anti-clockwise (AC) paths on the RMR by: (a) configuring two ring node segment identifiers (Ring-SIDs) on the ring node, wherein a first of the two Ring-SIDs (CW-Ring-SID) is to reach N in a clockwise direction on the ring and a second of the two Ring-SIDs (AC- Ring-SID) is to reach N in an anti-clockwise direction on the ring, and wherein the CW-Ring-SID and AC- Ring-SID are unique within a source packet routing in networking (SPRING) domain including the ring; (b) generating a message including the ring node's CW-Ring-SID and AC-Ring-SID; and (c) advertising the message, via an interior gateway protocol, for receipt by other ring nodes belonging to the ring such that (1) a clockwise multipoint-to-point path (CWP) is defined such that every other one of the ring nodes belonging to the ring can be an ingress for the CWP and such that only the node is an egress for the CWP, and (2) an anti-clockwise multipoint-to-point path (ACP) is defined such that every other one of the ring nodes belonging to the ring can be an ingress for the ACP and such that only the node is an egress for the ACP.

公开(公告)号：US20190372873A1

公开(公告)日：2019-12-05

申请号：US15994778

申请日：2018-05-31

Applicant: Juniper Networks, Inc.

Inventor： Vishnu Pavan Beeram ,  Devang Patel ,  Raveendra Torvi

IPC: H04L12/26 ,  H04L12/823 ,  H04L12/24 ,  H04L12/703

Abstract: A control device may subscribe to receive data from a network device. The data may be associated with a plurality of packets that have been dropped by the network device and include a first descriptor based on a type of packet drop associated with a packet of the plurality of packets that have been dropped by the network device, and one or more second descriptors based on a packet flow associated with the plurality of packets that have been dropped by the network device. The control device may determine a dropped packet profile associated with the network device, based on the first descriptor and the one or more second descriptors. The control device may generate a first notification based on the dropped packet profile associated with the network device and transmit the first notification to cause an action to be performed based on the first notification.

公开(公告)号：US10469369B2

公开(公告)日：2019-11-05

申请号：US15827060

申请日：2017-11-30

Applicant: Juniper Networks, Inc.

Inventor： Vishnu Pavan Beeram ,  Raveendra Torvi

IPC: H04L12/723 ,  H04L12/815 ,  H04L12/947 ,  H04L12/715 ,  H04L12/717

Abstract: A device may identify a portion of a label-switched path (LSP) on which a simple hierarchical LSP (sH-LSP) is to be used for transferring traffic via a network. The device may determine attribute information associated with the sH-LSP. The attribute information may include information associated with one or more characteristics of the sH-LSP. The device may provide an indication associated with identifying an available sH-LSP or creating a sH-LSP. The indication may include the attribute information associated with the sH-LSP, and may be being provided to cause the sH-LSP to be created on the portion of the LSP or an available sH-LSP, associated with the portion of the LSP, to be identified. The device may receive, based on providing the indication, an identifier associated with the sH-LSP. The device may cause the LSP to be set up based on the identifier associated with the sH-LSP.

公开(公告)号：US09838307B2

公开(公告)日：2017-12-05

申请号：US14981192

申请日：2015-12-28

Applicant: Juniper Networks, Inc.

Inventor： Vishnu Pavan Beeram ,  Raveendra Torvi

IPC: H04L12/26 ,  H04L12/723 ,  H04L12/815 ,  H04L12/947 ,  H04L12/717 ,  H04L12/715

CPC classification number: H04L45/50 ,  H04L45/42 ,  H04L45/46 ,  H04L47/22 ,  H04L49/25

Abstract: A device may identify a portion of a label-switched path (LSP) on which a simple hierarchical LSP (sH-LSP) is to be used for transferring traffic via a network. The device may determine attribute information associated with the sH-LSP. The attribute information may include information associated with one or more characteristics of the sH-LSP. The device may provide an indication associated with identifying an available sH-LSP or creating a sH-LSP. The indication may include the attribute information associated with the sH-LSP, and may be being provided to cause the sH-LSP to be created on the portion of the LSP or an available sH-LSP, associated with the portion of the LSP, to be identified. The device may receive, based on providing the indication, an identifier associated with the sH-LSP. The device may cause the LSP to be set up based on the identifier associated with the sH-LSP.

公开(公告)号：US12237974B2

公开(公告)日：2025-02-25

申请号：US18623310

申请日：2024-04-01

Applicant: Juniper Networks, Inc.

Inventor： Jonathan C. Barth ,  Vishnu Pavan Beeram ,  Srihari Ramachandra Sangli ,  Chandrasekar Ramachandran

IPC: H04L41/0893 ,  H04L12/46 ,  H04L41/40 ,  H04L45/02 ,  H04L45/64

Abstract: A network device may receive a border gateway protocol (BGP) flow specification route associated with creation of an overlay network slice in a network, and may create a new routing instance based on the BGP flow specification route. The network device may associate interfaces defined by the BGP flow specification route with virtual private network (VPN) members, and may determine VPN parameters based on the BGP flow specification route. The network device may advertise the VPN parameters within the network to cause the network to generate the overlay network slice.

公开(公告)号：US11451478B1

公开(公告)日：2022-09-20

申请号：US16692842

申请日：2019-11-22

Applicant: Juniper Networks, Inc.

Inventor： Raveendra Torvi ,  Tarek Saad ,  Jonathan C. Barth ,  Ronald Bonica ,  Vishnu Pavan Beeram

IPC: H04L47/125 ,  H04L45/18 ,  H04L45/00

Abstract: A tactical solution to network congestion is provided by a data forwarding device having (1) a first interface with a first link to a downstream data forwarding device and (2) second interface with a second link to a downstream data forwarding device, and executing a method comprising: (a) configuring the second interface as part of a loop-free alternate (LFA) path to a destination device, wherein the first interface is part of a shortest/preferred path to the destination device; (b) monitoring congestion at the first interface to determine whether or not the congestion exceeds a first threshold; and (c) responsive to a determination that the congestion exceeds the first threshold, forwarding at least some data addressed to the destination device, over the LFA path via the second interface instead of over the shortest/preferred path via the first interface, thereby alleviating congestion at the first interface, and otherwise, responsive to a determination that the congestion does not exceed the first threshold, not forwarding at least some data addressed to the destination device, over the LFA path via the second interface instead of over the shortest/preferred path via the first interface.