公开(公告)号：US11249902B1

公开(公告)日：2022-02-15

申请号：US16660478

申请日：2019-10-22

Applicant: Juniper Networks, Inc.

Inventor： Reji Thomas ,  Sairam Neelam ,  Vivek Ramesh ,  Jimmy Jose

IPC: G06F12/02 ,  H04L12/26 ,  H04L12/861

Abstract: A disclosed method may include (1) identifying a memory buffer that is allocated to a packet on a computing device, (2) identifying one or more characteristics of the memory buffer allocated to the packet on the computing device, (3) determining, based at least in part on the characteristics of the memory buffer, that the memory buffer allocated to the packet has leaked, and then in response to determining that the memory buffer has leaked, (4) performing at least one action to remedy the leak of the memory buffer. Various other apparatuses, systems, and methods are also disclosed.

公开(公告)号：US20160380882A1

公开(公告)日：2016-12-29

申请号：US14747734

申请日：2015-06-23

Applicant: Juniper Networks, Inc.

Inventor： Reji Thomas ,  Vivek Ramesh ,  Jithin Girish

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

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.

Abstract translation: 所公开的系统可以包括（1）存储在存储器中的高速缓存模块，其存储根据检测机制指定网络节点的邻居是否可达的邻居缓存条目，（2）存储在存储器中的超时模块， 其指定选择可达到的时间阈值的定时间隔，（3）存储在存储器中的接收模块，其接收关于邻居是否活动的事件信息;（4）存储在存储器中的偏置模块， 基于接收到的关于邻居是否活动的事件信息，在定时间隔内选择可达到的时间阈值，以及（5）存储在存储器中的确定模块，其确定邻居是否可到达至少部分地基于 确定所选择的可达时间阈值是否已被满足。 还公开了各种其它系统和方法。

公开(公告)号：US10454823B1

公开(公告)日：2019-10-22

申请号：US15892297

申请日：2018-02-08

Applicant: Juniper Networks, Inc.

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

IPC: H04L12/741 ,  H04L12/801 ,  H04L12/713

Abstract: The problem of processing an egress packet by a data forwarding device having (1) a first routing stack associated with a first namespace and a first interface, (2) a second routing stack associated with a second namespace and a second interface, wherein at least some forwarding information included in the second namespace is incompatible with the first routing stack, (3) a virtual routing and forwarding instance (VRF), and (4) a shared session layer socket associated with both the first and second routing stack, and bound to the VRF, where the VRF is associated with the second interface via the second routing stack, is solved by: adding the first interface to the VRF whereby the VRF is associated with both the first and second interfaces; and responsive to the adding of the first interface to the VRF, (1) adding routes from the second namespace to the first namespace such that network address prefixes of the second namespace are associated with a “special” next hop, and (2) flagging the shared session layer socket bound to the VRF. When an egress packet on the flagged shared session layer socket is received, the data forwarding device (1) sends the egress packet to the first routing stack for processing, (2) looks up next hop information using the first namespace of the first routing stack, and (3) determines whether or not the next hop information is a “special” next hop. Responsive to a determination that the next hop information is a “special” next hop, the data forwarding device injects the egress packet into the second routing stack for processing.

公开(公告)号：US10432545B2

公开(公告)日：2019-10-01

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

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：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：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.