公开(公告)号：US10210058B1

公开(公告)日：2019-02-19

申请号：US14871405

申请日：2015-09-30

Applicant: Juniper Networks, Inc.

Inventor： Harsha Srinath ,  Sanjay Agrawal ,  Gopi Krishna ,  Ananya Basu

IPC: G06F11/20 ,  G06F11/30 ,  G06F11/14 ,  H04L29/06

Abstract: A redundant service delivery gateway system and method. Configuration information defining roles for redundant service delivery gateways is received via a user interface defined for each of a plurality of redundant service delivery gateways. Configuration information defining one or more redundancy events, a redundancy policy associated with each redundancy event and two or more redundancy sets is also received via a user interface. Each redundancy set is associated with one or more of the redundancy events and each redundancy set includes a master redundancy state and a standby redundancy state. A first redundancy event detected in a first service delivery gateway leads to a transition, in the first service delivery gateway, from a master redundancy state to a standby redundancy state in the redundancy set associated with the first redundancy event.

公开(公告)号：US09379982B1

公开(公告)日：2016-06-28

申请号：US14042676

申请日：2013-09-30

Applicant: Juniper Networks, Inc.

Inventor： Gopi Krishna ,  Suresh Kumar Vinapamula Venkata ,  Shauli Gal ,  Li Fang ,  Harsha Srinath ,  Sanjay Agrawal ,  Jwala Dinesh Gupta Chakka

IPC: H04L12/803

CPC classification number: H04L47/125 ,  H04L67/1023 ,  H04L67/1034

Abstract: In general, techniques are described for load balancing, with a service node, packet flows using stateless load balancing that adapts to server failure to provide flow affinity to initially selected servers for the duration of respective flows. In one example, service node device applies stateless load balancing to packet flows to distribute the flows among a plurality of servers. The service node determines a failure of a failed server and then receives an initial packet of a packet flow from the packet flows and forwards the initial packet to an active server. The service node generates a mapping of the packet flow to the active server, determines a recovery of the failed server, receives a subsequent packet of the packet flow, and forwards the subsequent packet of the packet flow to the active server based at least on the mapping of the packet flow to the active server.

Abstract translation: 一般来说，描述了用于负载平衡的技术，其中使用服务节点，使用无状态负载平衡的分组流适应于服务器故障，以在相应流程的持续时间内为初始选择的服务器提供流量亲和度。 在一个示例中，服务节点设备向分组流应用无状态负载均衡以在多个服务器之间分配流。 服务节点确定故障服务器的故障，然后从分组流中接收分组流的初始分组，并将初始分组转发到活动服务器。 服务节点生成分组流到活动服务器的映射，确定故障服务器的恢复，接收分组流的后续分组，并且至少基于所述分组流将后续分组流转发到活动服务器 将数据包流映射到活动服务器。

公开(公告)号：US10999125B1

公开(公告)日：2021-05-04

申请号：US16278317

申请日：2019-02-18

Applicant: Juniper Networks, Inc.

Inventor： Harsha Srinath ,  Sanjay Agrawal ,  Gopi Krishna ,  Ananya Basu

IPC: G06F11/00 ,  H04L12/24 ,  H04L12/703 ,  H04L12/751 ,  H04L12/707 ,  H04L12/713 ,  H04L29/14 ,  H04L29/06

Abstract: A system and method for communicating between applications using a routing process. A set of one or more signal-routes are defined on a network device, including a first signal-route. Each signal-route is associated with a state of an application to be executed on the network device, wherein the first signal-route is associated with a first application state of the application. The network device detects, within the application executing within an application layer of the network device, a change in the first application state and notifies other applications of the change in the first application state. Notifying includes modifying the first signal-route, wherein modifying includes adding the first signal-route to or removing the first signal-route from a Routing Information Base (RIB) and advertising the change in the RIB.

公开(公告)号：US09985875B1

公开(公告)日：2018-05-29

申请号：US14871492

申请日：2015-09-30

Applicant: Juniper Networks, Inc.

Inventor： Harsha Srinath ,  Sanjay Agrawal ,  Sankar Ramamoorthi ,  Gopi Krishna ,  Juan-Antonio Bernal Van der Ven ,  Shauli Gal ,  Ina Minei

IPC: H04L12/703 ,  H04L12/707 ,  H04L12/713

CPC classification number: H04L45/28 ,  H04L45/22 ,  H04L45/586

Abstract: A system and method for handling critical events in service delivery gateways. Events are defined that cause a transition from a master redundancy state to a standby redundancy state in service delivery gateways and a plurality of signal-routes are stored. Each signal-route is associated with one or more of the defined events. A first defined event is detected in the first service delivery gateway and causes a transition from the first master redundancy state to the first standby redundancy state in the first service delivery gateway and a change in a first signal-route from the plurality of signal-routes in the first service delivery gateway. The change in the first signal-route is advertised and a second service delivery gateway transitions from the first standby redundancy state to the first master redundancy state.

公开(公告)号：US10771434B1

公开(公告)日：2020-09-08

申请号：US16369915

申请日：2019-03-29

Applicant: Juniper Networks, Inc.

Inventor： Harsha Srinath ,  Gregory M. Dalle ,  Dhiraj D. Ballal ,  Manas Pal ,  Jacopo Pianigiani ,  Sanjay Agrawal ,  Sandesh Kumar Sodhi ,  Saravanadas P. Subramanian

IPC: H04L29/06

Abstract: A system and method for modifying services provided by one or more network devices. A processor of a first network device identifies defined events in each of a plurality of applications, including a first defined event associated with a first application. The processor assigns a signal-route to each defined event. The processor then executes the first application and, when the processor detects occurrence of the first defined event during execution of the first application, the processor modifies services provided by a second network device by adding the first signal-route to or removing the first signal-route from a routing information base (RIB) on the first network device and advertising, to the second network device, the change in the RIB.

公开(公告)号：US10250562B1

公开(公告)日：2019-04-02

申请号：US15377777

申请日：2016-12-13

Applicant: Juniper Networks, Inc.

Inventor： Harsha Srinath ,  Gregory M. Dalle ,  Dhiraj D. Ballal ,  Manas Pal ,  Jacopo Pianigiani ,  Sanjay Agrawal ,  Sandesh Kumar Sodhi ,  Saravanadas P. Subramanian

IPC: H04L29/06

Abstract: A system and method for handling critical events in service gateways. Configuration information is received in a service gateway, the configuration information defining a redundancy set having a master redundancy state and a standby redundancy state, the configuration information including one or more redundancy policies associated with the redundancy set, a service redundancy policy defining changes to be made in a service when a transition occurs in the state of the redundancy set. The service gateway receives further configuration information defining events that cause a transition between the master and standby redundancy states in the redundancy set. In response to detecting a redundancy event in the service gateway, the service gateway transitions the redundancy set, within the service gateway, from the master redundancy state to the standby redundancy state, modifies a first signal-route state associated with the redundancy set and modifies the service based on the service redundancy policy.