公开(公告)号：US11882029B2

公开(公告)日：2024-01-23

申请号：US17663319

申请日：2022-05-13

申请人： Juniper Networks, Inc.

发明人： Tarek Saad ,  Manish Talwar ,  Raveendra Torvi ,  Ajay Kachrani ,  Kireeti Kompella

IPC分类号： H04L45/50 ,  H04L45/00 ,  H04L69/22 ,  H04L9/40

CPC分类号： H04L45/50 ,  H04L45/66 ,  H04L63/0464 ,  H04L63/061 ,  H04L69/22

摘要： In some implementations, an ingress network device of a multiprotocol label switching (MPLS) network may receive a packet destined for a destination network device. The ingress network device may determine, based on the packet, a secure function to secure the packet and a label associated with a label-switched path (LSP) from the ingress network device to an egress network device of the MPLS network that is associated with the destination network device. The ingress network device may encrypt, using the secure function, the packet to generate an encrypted packet. The ingress network device may generate an MPLS packet comprising: an MPLS header that includes the label and a secure function indicator, a secure MPLS data header that includes information identifying the secure function, and an MPLS payload that includes the encrypted packet. The ingress network device may forward, based on the label, the MPLS packet.

公开(公告)号：US11070463B2

公开(公告)日：2021-07-20

申请号：US16589115

申请日：2019-09-30

申请人： Juniper Networks, Inc.

发明人： Raveendra Torvi ,  Sudharsana Venkataraman ,  Tarek Saad ,  Vishnu Pavan Beeram

IPC分类号： H04L12/729 ,  G06F16/23 ,  H04L12/751 ,  H04L12/707

摘要： At least one bandwidth-guaranteed segment routing (SR) path through a network is determined by: (a) receiving, as input, a bandwidth demand value; (b) obtaining network information; (c) determining a constrained shortest multipath (CSGi); (d) determining a set of SR segment-list(s) (Si=[sl1i, sl2i . . . slni]) a that are needed to steer traffic over CSGi; and (e) tuning the loadshares in Li, using Si and the per segment-list loadshare (Li=[l1i, l2i . . . lni]), the per segment equal cost multipath (“ECMP”), and the per link residual capacity, such that the bandwidth capacity that can be carried over CSGi is maximized.

公开(公告)号：US10728143B2

公开(公告)日：2020-07-28

申请号：US16435427

申请日：2019-06-07

申请人： Juniper Networks, Inc.

发明人： Harish Sitaraman ,  Raveendra Torvi ,  Markus Jork ,  Kireeti Kompella ,  Vishnu Pavan Beeram ,  Chandrasekar Ramachandran

IPC分类号： H04L12/723 ,  H04L12/28 ,  H04L12/701 ,  H04L12/781

摘要： The disclosed computer-implemented 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 label stack that includes a plurality of labels that collectively represent at least a portion of an LSP within the network, (3) popping, from the label stack, a label that corresponds to a specific link to a further network node, and then upon popping the label from the label stack, (4) forwarding the packet to the further network node by way of the specific link. Various other methods, systems, and apparatuses are also disclosed.

公开(公告)号：US20190297008A1

公开(公告)日：2019-09-26

申请号：US16435427

申请日：2019-06-07

申请人： Juniper Networks, Inc.

发明人： Harish Sitaraman ,  Raveendra Torvi ,  Markus Jork ,  Kireeti Kompella ,  Vishnu Pavan Beeram ,  Chandrasekar Ramachandran

IPC分类号： H04L12/723 ,  H04L12/781

摘要： The disclosed computer-implemented 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 label stack that includes a plurality of labels that collectively represent at least a portion of an LSP within the network, (3) popping, from the label stack, a label that corresponds to a specific link to a further network node, and then upon popping the label from the label stack, (4) forwarding the packet to the further network node by way of the specific link. Various other methods, systems, and apparatuses are also disclosed.

公开(公告)号：US10313234B2

公开(公告)日：2019-06-04

申请号：US15834722

申请日：2017-12-07

申请人： Juniper Networks, Inc.

发明人： Minjie Dai ,  Yimin Shen ,  Raveendra Torvi ,  Markus Jork ,  Yakov Rekhter ,  Natrajan Venkataraman

IPC分类号： H04L12/723 ,  H04L12/735

摘要： Techniques are described for reusing downstream-assigned labels when establishing a new instance of a label switched path (LSP) prior to tearing down an existing instance of the LSP using make-before-break (MBB) procedures for RSVP. The techniques enable a routing engine of any non-ingress router along a path of the new LSP instance to reuse a previously allocated label for the existing LSP instance as the downstream assigned label for the new LSP instance when the paths of the existing LSP instance and the new LSP instance overlap. In this way, the non-ingress router does not need to update a label route in its forwarding plane for the reused label. When the new LSP instance completely overlaps the existing LSP instance, an ingress router of the LSP may avoid updating an ingress route in its forwarding plane for applications that use the LSP.

公开(公告)号：US10291522B1

公开(公告)日：2019-05-14

申请号：US15463106

申请日：2017-03-20

申请人： Juniper Networks, Inc.

发明人： Santosh Esale ,  Manish Gupta ,  Raveendra Torvi ,  Christopher Bowers

IPC分类号： H04L12/741 ,  H04L29/08

摘要： In general, the disclosure relates to techniques for initiating a targeted LDP session in a manner that includes information specifying one or more application for which a targeted LDP session is being initiated. In one example, a method includes receiving, by a network device, a LDP initialization message to initiate an Label Distribution Protocol (LDP) session with a peer network device, the LDP initialization message including a Targeted Applications Capability (TAC) field specifying one or more applications for which the LDP session is to be used for advertising forwarding equivalence class (FEC)-label bindings between the network device and the peer network device, and determining, by the network device, whether to allow the LDP session to be established based on the one or more applications specified in the TAC field.

公开(公告)号：US20180097726A1

公开(公告)日：2018-04-05

申请号：US15834722

申请日：2017-12-07

申请人： Juniper Networks, Inc.

发明人： Minjie Dai ,  Yimin Shen ,  Raveendra Torvi ,  Markus Jork ,  Yakov Rekhter ,  Natrajan Venkataraman

IPC分类号： H04L12/723 ,  H04L12/735

CPC分类号： H04L45/507 ,  H04L45/128 ,  H04L45/50

摘要： Techniques are described for reusing downstream-assigned labels when establishing a new instance of a label switched path (LSP) prior to tearing down an existing instance of the LSP using make-before-break (MBB) procedures for RSVP. The techniques enable a routing engine of any non-ingress router along a path of the new LSP instance to reuse a previously allocated label for the existing LSP instance as the downstream assigned label for the new LSP instance when the paths of the existing LSP instance and the new LSP instance overlap. In this way, the non-ingress router does not need to update a label route in its forwarding plane for the reused label. When the new LSP instance completely overlaps the existing LSP instance, an ingress router of the LSP may avoid updating an ingress route in its forwarding plane for applications that use the LSP.

公开(公告)号：US09692691B1

公开(公告)日：2017-06-27

申请号：US14585329

申请日：2014-12-30

申请人： Juniper Networks, Inc.

发明人： Harish Sitaraman ,  Raveendra Torvi ,  Yakov Rekhter

IPC分类号： H04L12/723 ,  H04L12/913 ,  H04L12/775 ,  H04L12/751 ,  H04L12/707

CPC分类号： H04L45/50 ,  H04L45/507 ,  H04L45/58 ,  H04L47/724

摘要： In general, techniques are described for configuration of label switched paths in multi-protocol label switched networks. A router comprising a control unit and an interface may be configured to perform the techniques. The control unit may determine a label to bind to the LSP. The interface may transmit a message specifying the label that has been bound to the LSP prior to confirming that the LSP has been successfully configured within the support router to use the bound label.

公开(公告)号：US09602354B1

公开(公告)日：2017-03-21

申请号：US14320242

申请日：2014-06-30

申请人： Juniper Networks, Inc.

发明人： Santosh Esale ,  Manish Gupta ,  Raveendra Torvi ,  Christopher Bowers

IPC分类号： H04L12/28 ,  H04L12/24 ,  H04L12/723

CPC分类号： H04L41/0893 ,  H04L45/507

摘要： In general, the disclosure relates to techniques for initiating a targeted LDP session in a manner that includes information specifying one or more application for which a targeted LDP session is being initiated. In one example, a method includes receiving, by a network device, a LDP initialization message to initiate an Label Distribution Protocol (LDP) session with a peer network device, the LDP initialization message including a Targeted Applications Capability (TAC) field specifying one or more applications for which the LDP session is to be used for advertising forwarding equivalence class (FEC)-label bindings between the network device and the peer network device, and determining, by the network device, whether to allow the LDP session to be established based on the one or more applications specified in the TAC field.

公开(公告)号：US20160277959A1

公开(公告)日：2016-09-22

申请号：US14713068

申请日：2015-05-15

申请人： Juniper Networks, Inc.

发明人： Sudharsana Venkataraman ,  Raveendra Torvi ,  Chandrasekar Ramachandran ,  Yakov Rekhter

IPC分类号： H04W28/02 ,  H04L12/755 ,  H04W24/08

CPC分类号： H04L47/2433 ,  H04L45/021 ,  H04L45/125 ,  H04L45/50 ,  H04L47/2408 ,  H04L47/72 ,  H04L47/805

摘要： Techniques are described for establishing lower priority LSPs on paths determined to be less likely to include bandwidth constrained links. In one example, a router includes a plurality of physical interfaces each having at least one link interconnecting the router as one of a plurality of routers in a network and a processor. The processor is configured to determine whether a link of one of the plurality of physical interfaces is congested based at least in part on an amount of available bandwidth on the link, and, responsive to determining that the link is congested, set a bandwidth subscription for the link, wherein the bandwidth subscription specifies that the amount of available bandwidth on the link for label switched paths having a lower priority is less than the amount of available bandwidth on the link for label switched paths having a higher priority.

摘要翻译： 描述了用于在确定为不太可能包括带宽受限链路的路径上建立较低优先级的LSP的技术。 在一个示例中，路由器包括多个物理接口，每个物理接口具有将路由器互连到网络中的多个路由器之一和处理器中的至少一个链路。 处理器被配置为至少部分地基于链路上的可用带宽的量来确定多个物理接口中的一个的链路是否拥塞，并且响应于确定链路拥塞，为 所述链路，其中所述带宽预约指定具有较低优先级的标签交换路径的所述链路上的可用带宽量小于具有较高优先级的标签交换路径的所述链路上的可用带宽量。