Huawei Technologies Co., Limited

Jixiong Dong

Hao Long

Hongguang Guan

Haomian Zheng

Wei Li

Feng Zeng

Dan Li

Fatai Zhang

Jianhua Gao

Yufei Wang

Don Li

A route computation method and system, and a path computation element (PCE) are provided. In particular, the method includes: receiving, by a bottom-level PCE which manages a routing domain including a destination node, a path computation command, performing a route computation on the routing domain managed by the bottom-level PCE, obtaining a path segment set with a destination node serving as an endpoint, and sending the obtained path segment set to an upper-level PCE of the bottom-level PCE, sending, by the upper-level PCE receiving the path segment set sent by a first lower-level PCE, the path computation command to a second lower-level PCE, receiving path segment sets sent by all lower-level PCEs, and combining and sending all the received path segment sets to an upper-level PCE of the upper-level PCE, until a top-level PCE receives path segment sets sent by all lower-level PCEs of the top-level PCE; and combining, by the top-level PCE, all the received path segment sets to generate a set of paths between the destination node and the source node.

Route computation method and system, and path computation element

A method and a network device for realizing shared mesh protection are provided. The method includes the following steps. If a status change of a working label switching path (LSP) is detected, routing information and bandwidth information about the working LSP are notified to every node on a protection LSP corresponding to the working LSP. Every node on the protection LSP calculates a maximal reserved bandwidth of a link based on the received routing information and bandwidth information and adjusts a shared protection bandwidth of the link according to the maximal reserved bandwidth.

Method and network device for realizing shared mesh protection

A method for configuring operation, administration and maintenance (OAM) properties, a system for configuring OAM properties, and a node device are provided. The method includes: delivering a message carrying OAM property configuration indicating information; and flowing through a plurality of nodes to be configured in the process of delivering the message, and configuring, by each of the nodes to be configured, an OAM property of the present node according to the OAM property configuration indicating information in the message flowing through the present node.

Method, system, and device for configuring operation, administration and maintenance properties

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Shenzhen, China

Jixiong Dong