公开(公告)号：US20160254992A1

公开(公告)日：2016-09-01

申请号：US15150003

申请日：2016-05-09

Applicant: Juniper Networks, Inc.

Inventor： Raveendra Torvi ,  Vishnu Pavan Beeram ,  Maruthi Kishore Tiruveedhula

IPC: H04L12/703 ,  H04L12/911 ,  H04L12/723

CPC classification number: H04L45/28 ,  H04L45/02 ,  H04L45/50 ,  H04L47/825

Abstract: An apparatus may include a processor and a control plane that directs the processor to (1) detect that at least a portion of an initial branch path of a point-to-multipoint label-switched path has failed over to a failover route that rejoins the initial branch path at a network node and (2) establish an alternate branch path that merges with the initial branch path at the network node. The apparatus may also include a network interface and a data plane that uses the network interface to transmit data via the alternate branch path, where after the data plane begins transmitting data via the alternate branch path, the control plane instructs the network node to forward data from the alternate branch path rather than from the failover route. Various other apparatuses, systems, and methods are also disclosed.

Abstract translation: 设备可以包括处理器和控制平面，其指导处理器（1）检测到点对多点标签交换路径的初始分支路径的至少一部分已经故障转移到重新加入的故障转移路由 在网络节点处的初始分支路径和（2）建立与网络节点处的初始分支路径合并的备用分支路径。 该装置还可以包括网络接口和数据平面，其使用网络接口经由备用分支路径发送数据，其中在数据平面经由备用分支路径开始发送数据之后，控制平面指示网络节点转发数据 从备用分支路径而不是从故障转移路由。 还公开了各种其它装置，系统和方法。

公开(公告)号：US09363169B2

公开(公告)日：2016-06-07

申请号：US14231117

申请日：2014-03-31

Applicant: Juniper Networks, Inc.

Inventor： Raveendra Torvi ,  Vishnu Pavan Beeram ,  Maruthi Kishore Tiruveedhula

IPC: H04L12/703 ,  H04L12/911 ,  H04L12/751 ,  H04L12/723

CPC classification number: H04L45/28 ,  H04L45/02 ,  H04L45/50 ,  H04L47/825

Abstract: An apparatus may include a processor and a control plane that directs the processor to (1) detect that at least a portion of an initial branch path of a point-to-multipoint label-switched path has failed over to a failover route that rejoins the initial branch path at a merge-point device and (2) establish an alternate branch path that merges with the initial branch path at the merge-point device. The apparatus may also include a network interface and a data plane that uses the network interface to transmit data via the alternate branch path while data is still being transmitted via the initial branch path, where after the data plane begins transmitting data via the alternate branch path, the control plane instructs the merge-point device to forward data from the alternate branch path rather than from the failover route. Various other apparatuses, systems, and methods are also disclosed.

Abstract translation: 设备可以包括处理器和控制平面，其指导处理器（1）检测到点对多点标签交换路径的初始分支路径的至少一部分已经故障转移到重新加入的故障转移路由 在合并点设备处的初始分支路径和（2）建立与合并点设备处的初始分支路径合并的备用分支路径。 该装置还可以包括网络接口和数据平面，该数据平面使用网络接口经由备用分支路径发送数据，同时数据仍然通过初始分支路径发送，其中在数据平面开始经由备用分支路径发送数据之后 控制平面指示合并点设备从备用分支路径而不是故障转移路由转发数据。 还公开了各种其它装置，系统和方法。

公开(公告)号：US20150092785A1

公开(公告)日：2015-04-02

申请号：US14042724

申请日：2013-10-01

Applicant: Juniper Networks, Inc.

Inventor： Raveendra Torvi

IPC: H04L12/715

CPC classification number: H04L45/04 ,  H04L41/0813 ,  H04L45/02 ,  H04L45/12 ,  H04L45/32

Abstract: In general, techniques are described for dynamically filtering, at area border routers (ABRs) of a multi-area autonomous system, routes to destinations external to an area by advertising to routers of the area only those routes associated with a destination address requested by at least one router of the area. In one example, a method includes receiving, by an ABR that borders a backbone area and a non-backbone area of a multi-area autonomous system that employs a hierarchical link state routing protocol to administratively group routers of the autonomous system into areas, a request message from the non-backbone area that requests the ABR to provide routing information associated with a service endpoint identifier (SEI) to the non-backbone area. The request message specifies the SEI. The method also includes sending, in response to receiving the request and by the ABR, the routing information associated with the SEI to the non-backbone area.

Abstract translation: 一般来说，描述了用于在多区域自治系统的区域边界路由器（ABR）处动态过滤的技术，通过向该区域的路由器通告仅与那些与由 该区域至少有一个路由器。 在一个示例中，一种方法包括通过采用层次化链路状态路由协议的边界骨干区域和非骨干区域的ABR来接收将自治系统的路由器管理地组合成区域的方法， 来自非骨干区域的请求消息，其请求ABR向非骨干区域提供与服务端点标识符（SEI）相关联的路由信息​​。 请求消息指定SEI。 该方法还包括响应于接收到该请求和由ABR将与该SEI相关联的路由信息​​发送到非骨干区域。

公开(公告)号：US12034635B2

公开(公告)日：2024-07-09

申请号：US17589539

申请日：2022-01-31

Applicant: Juniper Networks, Inc.

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

IPC: H04L45/00 ,  H04L49/00

CPC classification number: H04L45/34 ,  H04L49/3009

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：US11811651B2

公开(公告)日：2023-11-07

申请号：US17150082

申请日：2021-01-15

Applicant: Juniper Networks, Inc.

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

IPC: H04L45/302 ,  H04L45/44 ,  H04L45/50 ,  H04L45/58

CPC classification number: H04L45/302 ,  H04L45/44 ,  H04L45/50 ,  H04L45/583

Abstract: A disclosed method may include (1) receiving, at a network node within a network, a packet from another network node within the network, (2) identifying, within the packet, a slice label that indicates a network slice that has been logically partitioned on the network, (3) determining a QoS policy that corresponds to the network slice indicated by the slice label, (4) applying the QoS policy to the packet, and then upon applying the QoS policy to the packet, (5) forwarding the packet to an additional network node within the network. Various other apparatuses, systems, and methods are also disclosed.

公开(公告)号：US20220224654A1

公开(公告)日：2022-07-14

申请号：US17656846

申请日：2022-03-28

Applicant: Juniper Networks, Inc.

Inventor： Venkata Naga Chaitanya Munukutla ,  Raveendra Torvi ,  Dmitry A. Shokarev ,  Vishnu Pavan Beeram ,  Manikandan Musuvathi Poornachary ,  Shivam Vaid

IPC: H04L47/32 ,  H04L43/026 ,  H04L49/253 ,  H04L45/00 ,  H04L43/16

Abstract: In general, this disclosure describes a network device to determine a cause of packets being dropped within a network. An example method includes generating, by a traffic monitor operating on a network device, an exception packet that includes a unique exception code that identifies a cause for a component in the network device to discard a transit packet, and a nexthop index identifying a forwarding path being taken by the transit packet experiencing the exception. The method also includes forwarding the exception packet to a collector to be processed.

公开(公告)号：US20220182314A1

公开(公告)日：2022-06-09

申请号：US17589539

申请日：2022-01-31

Applicant: Juniper Networks, Inc.

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

IPC: 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：US11323381B2

公开(公告)日：2022-05-03

申请号：US16917433

申请日：2020-06-30

Applicant: Juniper Networks, Inc.

Inventor： Venkata Naga Chaitanya Munukutla ,  Raveendra Torvi ,  Dmitry A. Shokarev ,  Vishnu Pavan Beeram ,  Manikandan Musuvathi Poornachary ,  Shivam Vaid

IPC: H04L12/823 ,  H04L12/26 ,  H04L12/721 ,  H04L47/32 ,  H04L43/026 ,  H04L49/253 ,  H04L45/00 ,  H04L43/16

Abstract: In general, this disclosure describes a network device to determine a cause of packets being dropped within a network. An example method includes generating, by a traffic monitor operating on a network device, an exception packet that includes a unique exception code that identifies a cause for a component in the network device to discard a transit packet, and a nexthop index identifying a forwarding path being taken by the transit packet experiencing the exception. The method also includes forwarding the exception packet to a collector to be processed.

公开(公告)号：US20210328939A1

公开(公告)日：2021-10-21

申请号：US16917433

申请日：2020-06-30

Applicant: Juniper Networks, Inc.

Inventor： Venkata Naga Chaitanya Munukutla ,  Raveendra Torvi ,  Dmitry A. Shokarev ,  Vishnu Pavan Beeram ,  Manikandan Musuvathi Poornachary ,  Shivam Vaid

IPC: H04L12/823 ,  H04L12/26 ,  H04L12/721 ,  H04L12/937

Abstract: In general, this disclosure describes a network device to determine a cause of packets being dropped within a network. An example method includes generating, by a traffic monitor operating on a network device, an exception packet that includes a unique exception code that identifies a cause for a component in the network device to discard a transit packet, and a nexthop index identifying a forwarding path being taken by the transit packet experiencing the exception. The method also includes forwarding the exception packet to a collector to be processed.

公开(公告)号：US11032192B2

公开(公告)日：2021-06-08

申请号：US16412300

申请日：2019-05-14

Applicant: Juniper Networks, Inc.

Inventor： Nischal Singh ,  Raveendra Torvi

IPC: H04L12/24 ,  H04L12/703 ,  H04L12/707 ,  H04L12/717 ,  H04L12/723 ,  H04L12/913 ,  H04L29/08 ,  H04L29/14

Abstract: A node of an LSP may inform the ingress node of the LSP, for example via RSVP signaling, about its temporary unavailability for a certain time. In response, the ingress node can stop using any affected LSP(s) and divert the traffic to other LSPs. This provides a faster mechanism to signal traffic shift then traditional IGP overload which causes considerable churn into the network as all the nodes need to compute the SPF. It is sufficient for ingress node to be aware of this node maintenance and it can use information to divert the traffic to other equal cost multipath (ECMP) LSP(s), or other available LSP(s). If no alternative LSP path exists when the ingress node receives such a message, a new LSP can be built during this time and traffic diverted smoothly (e.g., in a make-before-break manner) before the node goes offline for maintenance. Since only the ingress node is responsible to push the traffic to the LSP, there is no need to tear down the LSP for such node maintenance (especially when they are for a short duration). This can be used with a controller responsible for the LSP as well.