公开(公告)号：US09692691B1

公开(公告)日：2017-06-27

申请号：US14585329

申请日：2014-12-30

Applicant: Juniper Networks, Inc.

Inventor： Harish Sitaraman ,  Raveendra Torvi ,  Yakov Rekhter

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

CPC classification number: H04L45/50 ,  H04L45/507 ,  H04L45/58 ,  H04L47/724

Abstract: 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：US09590894B2

公开(公告)日：2017-03-07

申请号：US14585664

申请日：2014-12-30

Applicant: Juniper Networks, Inc.

Inventor： Chandrasekar Ramachandran ,  Markus Jork ,  Yakov Rekhter ,  Harish Sitaraman

IPC: H04W28/26 ,  H04L12/723 ,  H04L12/751 ,  H04L12/703 ,  H04L12/911 ,  H04L12/707 ,  H04L12/24 ,  H04L29/06

CPC classification number: H04L45/28 ,  H04L41/0654 ,  H04L41/0668 ,  H04L45/026 ,  H04L45/22 ,  H04L45/50 ,  H04L45/507 ,  H04L47/72 ,  H04L47/728 ,  H04L65/4069

Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.

Abstract translation: 在一个示例中，本公开的技术可以使得本地修复（PLR）网络设备的点能够向合并点（MP）网络设备通知链路保护或节点保护的可用性，并使得网络设备能够主动地确定其是否 是一个合并点路由器。 基于网络设备是否确定它是MP，当存在上游链路或节点故障时，网络设备可以选择性地清除LSP状态。 可以扩展RSVP-TE协议以使网络设备向下游路由器发送撕下消息，这可以使下游路由器有条件地删除区域性LSP状态信息。 在一些情况下，即使PLR网络设备可能没有工作旁路LSP，PLR网络设备也可以直接向MP网络设备发送拆卸消息。

公开(公告)号：US20160277959A1

公开(公告)日：2016-09-22

申请号：US14713068

申请日：2015-05-15

Applicant: Juniper Networks, Inc.

Inventor： Sudharsana Venkataraman ,  Raveendra Torvi ,  Chandrasekar Ramachandran ,  Yakov Rekhter

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

CPC classification number: H04L47/2433 ,  H04L45/021 ,  H04L45/125 ,  H04L45/50 ,  H04L47/2408 ,  H04L47/72 ,  H04L47/805

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20160119821A1

公开(公告)日：2016-04-28

申请号：US14585664

申请日：2014-12-30

Applicant: Juniper Networks, Inc.

Inventor： Chandrasekar Ramachandran ,  Markus Jork ,  Yakov Rekhter ,  Harish Sitaraman

IPC: H04W28/26 ,  H04L12/723 ,  H04L12/751

CPC classification number: H04L45/28 ,  H04L41/0654 ,  H04L41/0668 ,  H04L45/026 ,  H04L45/22 ,  H04L45/50 ,  H04L45/507 ,  H04L47/72 ,  H04L47/728 ,  H04L65/4069

Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.

Abstract translation: 在一个示例中，本公开的技术可以使得本地修复（PLR）网络设备的点能够向合并点（MP）网络设备通知链路保护或节点保护的可用性，并使得网络设备能够主动地确定其是否 是一个合并点路由器。 基于网络设备是否确定它是MP，当存在上游链路或节点故障时，网络设备可以选择性地清除LSP状态。 可以扩展RSVP-TE协议以使网络设备向下游路由器发送撕下消息，这可以使下游路由器有条件地删除区域性LSP状态信息。 在一些情况下，即使PLR网络设备可能没有工作旁路LSP，PLR网络设备也可以直接向MP网络设备发送拆卸消息。

公开(公告)号：US20160119223A1

公开(公告)日：2016-04-28

申请号：US14585683

申请日：2014-12-30

Applicant: Juniper Networks, Inc.

Inventor： Chandrasekar Ramachandran ,  Markus Jork ,  Yakov Rekhter ,  Harish Sitaraman

IPC: H04L12/703 ,  H04L12/24 ,  H04L12/911 ,  H04L12/707 ,  H04L12/751 ,  H04L12/723

CPC classification number: H04L45/28 ,  H04L41/0654 ,  H04L41/0668 ,  H04L45/026 ,  H04L45/22 ,  H04L45/50 ,  H04L45/507 ,  H04L47/72 ,  H04L47/728 ,  H04L65/4069

Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.

Abstract translation: 在一个示例中，本公开的技术可以使得本地修复（PLR）网络设备的点能够向合并点（MP）网络设备通知链路保护或节点保护的可用性，并使得网络设备能够主动地确定其是否 是一个合并点路由器。 基于网络设备是否确定它是MP，当存在上游链路或节点故障时，网络设备可以选择性地清除LSP状态。 可以扩展RSVP-TE协议以使网络设备向下游路由器发送撕下消息，这可以使下游路由器有条件地删除区域性LSP状态信息。 在一些情况下，即使PLR网络设备可能没有工作旁路LSP，PLR网络设备也可以直接向MP网络设备发送拆卸消息。

公开(公告)号：US09178809B1

公开(公告)日：2015-11-03

申请号：US13933054

申请日：2013-07-01

Applicant: Juniper Networks, Inc.

Inventor： Yimin Shen ,  Wen Lin ,  Yakov Rekhter

IPC: H04L12/28 ,  H04L12/723

CPC classification number: H04L12/4633 ,  H04L45/50

Abstract: An aggregation node establishes a first session using a traffic-engineering label distribution protocol. The first session has a next hop adjacent to the aggregation node and positioned within a same network as the aggregation node. The aggregation node also establishes a second session using a traffic-engineering label distribution protocol, wherein the second session has a remote next hop positioned at a border between the network and a second network. The aggregation node sends a message destined for the remote next hop over the second session for establishing an end-to-end traffic engineered label switched path for a FEC specified in a label request message received from an access node, wherein the message includes the same the data indicating constraint information that was received by the aggregation node in the label request message.

Abstract translation: 聚合节点使用流量工程标签分发协议建立第一个会话。 第一个会话具有与聚合节点相邻的下一跳，并且位于与聚合节点相同的网络内。 聚合节点还使用流量工程标签分发协议建立第二会话，其中第二会话具有位于网络和第二网络之间的边界处的远程下一跳。 聚合节点在第二会话上发送去往远程下一跳的消息，以建立用于在从接入节点接收到的标签请求消息中指定的FEC的端到端流量工程标签交换路径，其中消息包括相同 指示由聚合节点在标签请求消息中接收的约束信息的数据。

公开(公告)号：US10469365B2

公开(公告)日：2019-11-05

申请号：US14585722

申请日：2014-12-30

Applicant: Juniper Networks, Inc.

Inventor： Chandrasekar Ramachandran ,  Markus Jork ,  Yakov Rekhter ,  Harish Sitaraman

IPC: H04L12/703 ,  H04L12/751 ,  H04L12/723 ,  H04L12/911 ,  H04L12/707 ,  H04L12/24 ,  H04L29/06

Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.

公开(公告)号：US10382341B2

公开(公告)日：2019-08-13

申请号：US14713068

申请日：2015-05-15

Applicant: Juniper Networks, Inc.

Inventor： Sudharsana Venkataraman ,  Raveendra Torvi ,  Chandrasekar Ramachandran ,  Yakov Rekhter

IPC: H04W28/02 ,  H04L12/755 ,  H04W24/08 ,  H04L12/851 ,  H04L12/729 ,  H04L12/911 ,  H04L12/927 ,  H04L12/723

Abstract: 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.

公开(公告)号：US10187301B2

公开(公告)日：2019-01-22

申请号：US15450851

申请日：2017-03-06

Applicant: Juniper Networks, Inc.

Inventor： Chandrasekar Ramachandran ,  Markus Jork ,  Yakov Rekhter ,  Harish Sitaraman

IPC: H04W28/26 ,  H04L12/723 ,  H04L12/751 ,  H04L12/703 ,  H04L12/911 ,  H04L12/707 ,  H04L12/24 ,  H04L29/06

Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.

公开(公告)号：US10187298B2

公开(公告)日：2019-01-22

申请号：US14585745

申请日：2014-12-30

Applicant: Juniper Networks, Inc.

Inventor： Chandrasekar Ramachandran ,  Markus Jork ,  Yakov Rekhter ,  Harish Sitaraman

IPC: H04L12/24 ,  H04L29/06 ,  H04L12/703 ,  H04L12/707 ,  H04L12/723 ,  H04L12/751 ,  H04L12/911

Abstract: In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.