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Method and device for ensuring graceful restart

An elegant restart and device technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problems of neighbor devices not being able to know the restart of the main control card in time, late sending of GR messages, interruption of forwarding services of neighbor devices, etc. , to achieve the effect of shortening the sending time, ensuring normal forwarding, and improving the success rate

Active Publication Date: 2016-03-09
MAIPU COMM TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0005] When the main control card restarts and the routing protocol is put into operation for too long, the GR packet will be sent too late, and the neighboring device cannot know that the main control card is restarting in time, which will cause routing flapping on the neighboring device and cause forwarding services interruption problem

Method used

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  • Method and device for ensuring graceful restart
  • Method and device for ensuring graceful restart
  • Method and device for ensuring graceful restart

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below through specific embodiments and with reference to the accompanying drawings.

[0023] In the present invention, when the main control card is in normal operation, the main control card regularly sends the elegant restart message generated by the routing protocol and needs to be sent to all neighbor devices to the line card. When the main control card fails and needs to be restarted , the line card sends a graceful restart packet to the neighbor device. When the main control card in a distributed network device is restarted, the line card does not need to wait for the main control card to start and run the routing protocol. The line card directly sends a graceful restart message to the neighbor device, which shortens the sending time of the graceful restart message and improves the distributed network. The success rate ...

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Abstract

The invention discloses a method for ensuring graceful restart, which is applied to distributed network equipment, and the network equipment includes a main control card and at least one line card, including the following steps: A. The routing protocol running on the main control card periodically generates The graceful restart message sent to the neighbor device is sent to each line card through the graceful restart agent module on the master control card; B. The graceful restart agent module on each line card receives the graceful restart message from the master control card, and Save the latest graceful restart message locally; C. When each line card receives the notification of the main control card restart, the graceful restart agent module on the line card sends the latest graceful restart message saved locally to the neighbor equipment. The invention also discloses a device for ensuring graceful restart. The invention can shorten the sending time of the graceful restart message.

Description

technical field [0001] The invention relates to the technical field of graceful restart of distributed network devices, in particular to a method and device for ensuring graceful restart. Background technique [0002] Routing and switching network devices are responsible for important tasks such as network traffic forwarding and routing forwarding in the Internet interconnection. In order to ensure the high reliability and forwarding performance of routing and switching network equipment, the main control card plus distributed line card technology is usually used. The distributed line card is responsible for data forwarding, which can improve data forwarding performance. The main control card is responsible for managing the entire system, running routing protocols, etc. [0003] Graceful Restart (GR) technology is a kind of reliability technology, which is widely used in routing and switching network equipment. It can ensure the normal forwarding of data when the routing p...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L45/28
Inventor 杜云飞胡祖松舒弋
Owner MAIPU COMM TECH CO LTD
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