公开(公告)号：US09253097B1

公开(公告)日：2016-02-02

申请号：US14042642

申请日：2013-09-30

Applicant: Juniper Networks, Inc.

Inventor： Dhiman Barman ,  Ina Minei ,  Minjie Dai ,  Yimin Shen ,  Raveendra Torvi ,  Nitin Bahadur

IPC: H04L12/24 ,  H04L12/803

CPC classification number: H04L47/122 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

Abstract: In one example, a method includes establishing a plurality of label switched paths (LSPs) having a common transit network device other than an ingress network device or an egress network device of any of the plurality of LSPs, and, by the transit network device along the plurality of LSPs, detecting a congestion condition on a link along the plurality of LSPs and coupled to the transit network device. The method also includes, responsive to detecting the congestion condition, and by the transit network device, selecting a subset of the plurality of LSPs to evict from the link, wherein the subset comprises less than all of the plurality of LSPs, and updating a forwarding plane of the transit network device to reroute network traffic received for the selected subset of the plurality of the LSPs for forwarding to a next hop on a bypass LSP that avoids the link.

Abstract translation: 在一个示例中，一种方法包括建立多个标签交换路径（LSP），其具有除了多个LSP中的任一个的入口网络设备或出口网络设备之外的公共中继网络设备，并且通过所述中转网络设备 所述多个LSP检测沿着所述多个LSP的链路上的拥塞状况并耦合到所述中转网络设备。 该方法还包括响应于检测到拥塞状况，以及由转接网络设备选择要从链路中逐出的多个LSP的子集，其中该子集包括小于所有多个LSP，并更新转发 转发网络设备的平面，重新路由接收到的多个LSP的所选子集的网络流量，以转发到避免链路的旁路LSP上的下一跳。

公开(公告)号：US08913490B1

公开(公告)日：2014-12-16

申请号：US13730770

申请日：2012-12-28

Applicant: Juniper Networks, Inc.

Inventor： Dhiman Barman ,  Jevananth Minto Jeganathan

IPC: H04L12/28 ,  H04W40/00 ,  H04L12/707 ,  H04L12/24

CPC classification number: H04L41/0659 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04W40/00

Abstract: In one example, a network device includes a hardware-based processor, and a Resource Reservation Protocol with Traffic Engineering extensions (RSVP-TE) module executing on the hardware-based processor that establishes a plurality of label switched paths (LSPs) having the network device as a common transit network device. The network device presents a plurality of options for selection, which each specify a different algorithm for selecting LSPs to evict from the link. In response to detecting an over-subscription condition on a link along the plurality of LSPs, the RSVP-TE module selects a subset of the plurality of LSPs to evict from the link, and the RSVP-TE module outputs an error message to one or more ingress network devices associated with the selected subset of LSPs without outputting an error message to the ingress network devices associated with those LSPs not selected for eviction.

Abstract translation: 在一个示例中，网络设备包括基于硬件的处理器，以及在基于硬件的处理器上执行的具有流量工程扩展（RSVP-TE）模块的资源预留协议，其建立具有网络的多个标签交换路径（LSP） 设备作为公共交通网络设备。 网络设备呈现多个用于选择的选项，每个选项都指定用于选择从链路中逐出的LSP的不同算法。 响应于检测到沿着多个LSP的链路上的过度订阅状况，RSVP-TE模块选择要从链路中逐出的多个LSP的子集，并且RSVP-TE模块向一个或多个LSP输出错误消息 与所选择的LSP子集相关联的更多入口网络设备，而不向与未选择驱逐的那些LSP相关联的入口网络设备输出错误消息。