公开(公告)号：US09929897B2

公开(公告)日：2018-03-27

申请号：US15091393

申请日：2016-04-05

Applicant: Juniper Networks, Inc.

Inventor： Reji Thomas ,  Punit Kumar Jaiswal ,  Pranavadatta Dn ,  Jithin Girish

IPC: H04L25/48 ,  H04L12/24 ,  H04L12/741 ,  H04L29/08 ,  H04L12/707 ,  H04L12/703 ,  H04L12/26

CPC classification number: H04L41/0654 ,  H04L41/0213 ,  H04L43/0811 ,  H04L45/026 ,  H04L45/22 ,  H04L45/24 ,  H04L45/28 ,  H04L45/74 ,  H04L69/324

Abstract: The problem of being unable to run microBFD using an IPv6 address over any member links of a layer 2 LAG when the LAG is DOWN (and its IPv6 address becomes or is TENTATIVE), is solved by running DAD for the address configured for the microBFD once the individual link is in DISTRIBUTING or STANDBY state and triggering (or starting) microBFD once the DAD for that address completes successfully. Further, member links of the LAG may be permitted to continue running microBFD even if the LAG interface is DOWN and even if some other member links (but not all member links) of the LAG are DOWN.

公开(公告)号：US11516179B2

公开(公告)日：2022-11-29

申请号：US16138767

申请日：2018-09-21

Applicant: Juniper Networks, Inc.

Inventor： Jimmy Jose ,  Pranavadatta D N ,  Reji Thomas

IPC: H04L61/5046

Abstract: A network device in a network may determine a tentative network address for a network interface of the network device and may determine whether the tentative network address is duplicative of any one of the network addresses in the network. If the tentative network address is duplicative of a network address assigned to another network interface in the network, the network device may store an indication of the other network interface. In response to receiving an indication that a new network address is assigned to the other network interface, the network device may re-determine whether the tentative network address is duplicative of any one of the network addresses in the network. If the network device determines that the tentative network address is not duplicative of any one of the plurality of network addresses in the network, the network device may assign the tentative network address to the network interface.

公开(公告)号：US11509534B2

公开(公告)日：2022-11-22

申请号：US16661694

申请日：2019-10-23

Applicant: Juniper Networks, Inc.

Inventor： Vivek R. ,  Reji Thomas ,  Jimmy Jose

IPC: H04L41/0893 ,  G06F9/54 ,  H04L43/0823 ,  H04L9/40

Abstract: A network device may detect an error associated with a packet based on error information being generated from processing the packet at a layer of a network stack. The network device may determine, based on detecting the error, metadata associated with the packet. The network device may generate telemetry data to include the metadata. The network device may provide the telemetry data to a network analyzer for policy enforcement.

公开(公告)号：US11444975B2

公开(公告)日：2022-09-13

申请号：US16860828

申请日：2020-04-28

Applicant: Juniper Networks, Inc.

Inventor： Reji Thomas ,  SelvaKumar Sivaraj

IPC: H04L9/40 ,  H04L12/46 ,  H04L12/66 ,  H04L41/12 ,  H04L45/64 ,  H04L101/622 ,  H04L45/00 ,  H04L45/24

Abstract: Techniques are described for providing security extensions to neighbor discovery in Ethernet Virtual Private Network (EVPN). For example, a network device that implements Ethernet Virtual Private Network (EVPN) receives a neighbor discovery response message including a nonce originated by a second network device and not originated by the first network device. The network device processes the neighbor discovery response message including the nonce originated by the second network device and not originated by the first network device.

公开(公告)号：US10771379B2

公开(公告)日：2020-09-08

申请号：US16209954

申请日：2018-12-04

Applicant: Juniper Networks, Inc.

Inventor： Reji Thomas ,  Ronald Bonica ,  Ramakrishna Manjunath

IPC: H04L12/721 ,  H04L12/741 ,  H04L12/733 ,  H04L12/751

Abstract: The disclosed computer-implemented method may include (1) receiving, at a source node, a request to discover a plurality of network paths that each lead from the source node to a destination node and (2) discovering the plurality of network paths by (A) identifying each next hop between the source node and the destination node, (B) sending, from the source node to each next hop, a path-request probe that prompts the next hop to (i) determine each next-closest hop and (ii) return, to the source node, a path-response probe that identifies the next-closest hops, (C) receiving the path-response probes from the next hops, (D) determining, at the source node based on the path-response probes, that one or more of the plurality of network paths include the next hops and the next-closest hops, and then (E) iteratively discovering any subsequent hops by sending a subsequent path-request probe to each next-closest hop.

公开(公告)号：US10419357B1

公开(公告)日：2019-09-17

申请号：US15829894

申请日：2017-12-02

Applicant: Juniper Networks, Inc.

Inventor： Pranavadatta Devaki Narasimha Bhatta ,  Vivek Ramesh ,  Reji Thomas

IPC: H04L12/805 ,  H04L12/741 ,  H04L29/06

Abstract: A disclosed method may include (1) providing a network stack that includes both a native stack and a proprietary stack, (2) implementing at least one socket that represents an endpoint of a communication channel between a network device and a computing device, (3) identifying at least one packet to be forwarded from the network device to the computing device via the socket, (4) configuring the network stack such that (A) the native stack discovers a maximum transmission unit of a network path between the network device and the computing device in connection with the socket and (B) the proprietary stack fragments the packet into a plurality of segments that each comply with the maximum transmission unit of the network path, and then (5) forwarding, along the network path, the segments to the computing device. Various other systems and methods are also disclosed.

公开(公告)号：US20170366437A1

公开(公告)日：2017-12-21

申请号：US15188934

申请日：2016-06-21

Applicant: Juniper Networks, Inc.

Inventor： Ronald P. Bonica ,  Reji Thomas

IPC: H04L12/26

CPC classification number: H04L43/103 ,  H04L43/065 ,  H04L43/0811 ,  H04L43/0817 ,  H04L43/10 ,  H04L43/12 ,  H04L43/50

Abstract: An extend ping protocol is described that allow connectivity tests to be performed for individual network interfaces of a target device without requiring network reachability between the testing device and the remote interface whose status is being queried. Moreover, the extend ping protocol supports a plurality of different probe types that allow an administrator to control how identification information within an extended ping echo request is resolved to the unreachable interfaces.

公开(公告)号：US09832106B2

公开(公告)日：2017-11-28

申请号：US14747734

申请日：2015-06-23

Applicant: Juniper Networks, Inc.

Inventor： Reji Thomas ,  Vivek Ramesh ,  Jithin Girish

IPC: H04L12/721 ,  H04L12/733 ,  H04L12/741 ,  H04L29/12 ,  H04L12/703

CPC classification number: H04L45/26 ,  H04L45/20 ,  H04L45/28 ,  H04L45/74 ,  H04L61/2007 ,  H04L61/6059

Abstract: The disclosed system may include (1) a cache module, stored in memory, that stores a neighbor cache entry that specifies whether a neighbor of a network node is reachable according to a detection mechanism, (2) a timeout module, stored in memory, that specifies a timing interval in which to select a reachable time threshold, (3) a reception module, stored in memory, that receives event information about whether the neighbor is active, (4) a biasing module, stored in memory, that biases, based on the received event information about whether the neighbor is active, a selection of the reachable time threshold within the timing interval, and (5) a determination module, stored in memory, that determines whether the neighbor is reachable based at least in part on a determination of whether the selected reachable time threshold has been satisfied. Various other systems and methods are also disclosed.

公开(公告)号：US20170187638A1

公开(公告)日：2017-06-29

申请号：US15041736

申请日：2016-02-11

Applicant: Juniper Networks, Inc.

Inventor： Reji Thomas ,  Vivek Ramesh ,  Samson P. Ninan

IPC: H04L12/805 ,  H04L12/26

CPC classification number: H04L47/36 ,  H04L43/0864 ,  H04L43/10 ,  H04L47/125

Abstract: The disclosed apparatus may include (1) at least one communication port that facilitates communication between a source computing device and a destination computing device via a path within a network and (2) a processing unit communicatively coupled to the communication port, wherein the processing unit (A) monitors the network for any changes to the path that potentially affect a maximum transmission unit of the path, (B) detects, while monitoring the network, a change to at least one hop included in the path, and then in response to detecting the change to the hop, (C) identifies a packet size that corresponds to the maximum transmission unit of the path, and (D) tests the path for an increase in the maximum transmission unit by transmitting a packet whose size is larger than the packet size that corresponds to the maximum transmission unit. Various other apparatuses, systems, and methods are also disclosed.

公开(公告)号：US11902096B2

公开(公告)日：2024-02-13

申请号：US18047055

申请日：2022-10-17

Applicant: Juniper Networks, Inc.

Inventor： Vivek R. ,  Reji Thomas ,  Jimmy Jose

IPC: H04L43/0823 ,  H04L41/0893 ,  G06F9/54 ,  H04L9/40

CPC classification number: H04L41/0893 ,  G06F9/547 ,  H04L43/0847 ,  H04L63/1425

Abstract: A network device may detect an error associated with a packet based on error information being generated from processing the packet at a layer of a network stack. The network device may determine, based on detecting the error, metadata associated with the packet. The network device may generate telemetry data to include the metadata. The network device may provide the telemetry data to a network analyzer for policy enforcement.