公开(公告)号：EP2692099A2

公开(公告)日：2014-02-05

申请号：EP12765895.3

申请日：2012-01-25

Applicant: Cisco Technology, Inc.

Inventor： GANDHI, Rakesh ,  SAWAYA, Robert ,  SAAD, Tarek ,  ISRAR, Junaid

IPC: H04L12/56

CPC classification number: H04L45/50 ,  H04L47/245 ,  H04L47/724 ,  H04L47/805

Abstract: In an embodiment, a method is disclosed for minimizing soft preemptions of LSPs. Upon receiving a reservation message for an LSP whose requested bandwidth that exceeds the available bandwidth of downstream links, a network node may select a set of LSPs for soft preemption and share the selection with other nodes along their paths, both upstream and downstream. By coordinating the selection of LSPs to soft-preempt among nodes on the path, fewer LSPs may require soft preemption, which may result in minimizing excessive network disruptions, and thus, allowing the network to function more efficiently.

Abstract translation: 在一个实施例中，公开了一种用于最小化LSP的软抢占的方法。 在接收到其请求的带宽超过下游链路的可用带宽的LSP的保留消息时，网络节点可以选择用于软抢占的一组LSP，并沿着它们的路径（上游和下游）与其他节点共享选择。 通过将LSP的选择协调为在路径上的节点之间软抢占，较少的LSP可能需要软抢占，这可能导致最小化过度的网络中断，从而允许网络更有效地运行。

公开(公告)号：EP3038301B1

公开(公告)日：2020-03-04

申请号：EP15200218.4

申请日：2015-12-15

Applicant: Cisco Technology, Inc.

Inventor： SAAD, Tarek ,  SIVABALAN, Muthurajah ,  CHIN, Show Chung

IPC: H04L12/707 ,  H04L12/703 ,  H04L12/723

公开(公告)号：EP3038301A1

公开(公告)日：2016-06-29

申请号：EP15200218.4

申请日：2015-12-15

Applicant: Cisco Technology, Inc.

Inventor： SAAD, Tarek ,  SIVABALAN, Muthurajah ,  CHIN, Show Chung

IPC: H04L12/707 ,  H04L12/703 ,  H04L12/723

Abstract: In one embodiment, a device in a segment routed network identifies an adjacency segment between the device and another device in the network. The device also identifies a merge point in the network. A first network path extends between the device and the merge point via the adjacency segment. A bypass network path that does not include the adjacency segment also extends between the device and the merge point. The device generates an interior gateway protocol (IGP) message that identifies the adjacency segment and the merge point. The device provides the IGP message to one or more other devices in the network.

Abstract translation: 在一个实施例中，段路由网络中的设备识别设备与网络中的另一设备之间的邻接段。 该设备还标识网络中的合并点。 第一网络路径经由邻接段在设备和合并点之间延伸。 不包括邻接段的旁路网络路径也在设备和合并点之间延伸。 该设备生成内部网关协议（IGP）消息，其标识邻接段和合并点。 该设备向网络中的一个或多个其他设备提供IGP消息。

公开(公告)号：EP2951964A1

公开(公告)日：2015-12-09

申请号：EP14707500.6

申请日：2014-01-29

Applicant: Cisco Technology, Inc.

Inventor： SAAD, Tarek ,  AWAD, Sherif Saeed ,  ALI, Zafar ,  TAILLON, Michel

IPC: H04L12/721

CPC classification number: H04L45/124 ,  H04L45/125 ,  H04L45/24 ,  H04L45/50 ,  H04L45/62

Abstract: In one embodiment, a node in a communication network receives a label switched path (LSP) request and in response, the node determines at least two equal cost paths, each path having one or more path-nodes. The node may then further determine a total bandwidth-based transition value for each path of the at least two equal cost paths and selects the path having a lower total transition value. Once selected, the node may establish the requested LSP over the selected path.