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Router and main/standby switch method thereof

A technology of active/standby switching and router, which is applied in the field of data network communication to achieve the effects of flexibility, uninterrupted traffic forwarding, high intelligence and reliability

Active Publication Date: 2010-02-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] It can be seen from the above that the two implementation methods adopted by NSF technology have certain advantages and disadvantages. Therefore, it is necessary to propose a router master / standby switchover scheme to ensure the reliability of uninterrupted traffic forwarding.

Method used

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  • Router and main/standby switch method thereof
  • Router and main/standby switch method thereof
  • Router and main/standby switch method thereof

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Embodiment Construction

[0032] The main concept of the present invention is that, since GR and NSR are two mature technologies for realizing NSF, and the two are independent of each other, neither interdependent nor mutually exclusive, and have their own advantages and disadvantages, therefore, in the group that needs NSF In the network environment, the user can flexibly configure the two startup methods, that is, after the active / standby switchover, the router can choose the optimal startup method according to the prior configuration and device operation status.

[0033] The technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] A router that can implement non-stop forwarding of intermediate system to intermediate system routing protocols. Its structure is as follows figure 1 Shown, including configuration unit and processing unit. The functions of each unit are described below.

[0035...

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Abstract

The invention discloses a router and a main / standby switch method thereof, relating to the data network communication field. The main / standby switch method of the invention comprises the following steps: allocating non-stop forwarding (NSF) starting mode in an intermediate system-intermediate system (IS-IS) example running in the router, while the NSF starting mode is graceful restart (GR) and / ora non-stop routing (NSR) mode; and starting the IS-IS example according to the NSF starting mode of the IS-IS example when the router performs main / standby switch. The technical scheme of the invention not only can realize flexibility of user allocation, but also enable a device to choose the optimal starting mode according to user allocation and device running state to realize non-stop forwarding of flow as far as possible and have higher intelligence capacity and reliability in the process of main / standby switch of the router.

Description

technical field [0001] The invention relates to the field of data network communication, in particular to a router and a master-standby switching method thereof. Background technique [0002] NSF (Non-Stop Forwarding, non-stop forwarding) is a solution to improve the reliability of network operation. It can ensure that when there is a problem with the device control layer, the forwarding layer will not be affected, and the data forwarding will not be interrupted, thereby protecting the network on the device. Key businesses are not affected. In general, carrier-grade equipment is usually out of reliability considerations. The hardware generally adopts the method of active and standby redundancy to implement NSF technology, and the control plane and forwarding plane are separated. When the main control plane fails, as long as the failure does not affect the forwarding plane, there is a mechanism to ensure that the forwarding plane is not affected, and the failure can be recov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/22H04L12/24
Inventor 赵科强金昊朱彤
Owner ZTE CORP
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