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OAM switching method and network device

A technology of network equipment and the first line card, which is applied in the field of communication and can solve problems such as link switching

Active Publication Date: 2017-10-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, a line card failure will also trigger a link switchover

Method used

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  • OAM switching method and network device
  • OAM switching method and network device
  • OAM switching method and network device

Examples

Experimental program
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Embodiment Construction

[0015] figure 2 It is a schematic structural diagram of a network device, including at least two line cards, a controller, and a backplane. Wherein, the controller can be separately arranged on a printed circuit board, and can also be integrated in any line card. Alternatively, controllers are integrated inside the two line cards, and the two controllers cooperate to implement the control function. Both the controller and the line cards are connected to the backplane.

[0016] figure 2 The network devices shown can be figure 1 The router shown in , or the network switch that implements the OAM function.

[0017] image 3 shown as figure 2 The process of performing OAM handover by the shown network equipment includes the following steps:

[0018] S301: The controller in the network device installs OAM instance 1 on any line card (denoted as line card 1) in the network device. OAM instance 1 has OAM parameter 1, and sends it to the detected link according to OAM parame...

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Abstract

The invention provides an OAM switching method applied to a network device. A first OAM example is installed on a first line card in the network device, a second OAM example runs on a second line card, the second line card sends a first OAM message according to an OAM parameter, and the first line card enables to send the OAM message. The first line card judges whether a heartbeat message sent by the second line card in the network device is received, and if the first line card does not receive the heartbeat message sent by the second line card, the first line card sends a second OAM message according to the OAM parameter. As the line card cannot send the heartbeat message in the case of a fault, the first line card can detect the fault of the second line card and send the OAM message to the link detected by the second OAM example, therefore the link switching caused by the fault of the line card can be avoided when the network device can communicate with the located link thereof.

Description

technical field [0001] The present application relates to the communication field, and in particular to an operation and management (English: operation and management, OAM) handover method and network equipment. Background technique [0002] In order to ensure the normal transmission of data, the communication system usually adopts the mechanism of active and standby links. Such as figure 1 As shown, router 1 and router 2 on the main link transmit OAM packets to each other, and if router 1 or router 2 cannot receive the OAM packets sent by the peer end, it is determined that the link is faulty. After a link fails, the communication system performs link switching, that is, the standby link communication is enabled. [0003] Even if the link does not fail, if the internal line card of the router installed on the link fails, the line card of the router connected to the router by this link cannot receive the OAM message. Therefore, a line card failure will also trigger a link...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/703H04L12/24H04L12/26H04L1/22H04L45/28
CPCH04L1/22H04L41/0654H04L43/10H04L45/28
Inventor 生绪博
Owner HUAWEI TECH CO LTD
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