Router and main/standby switch method thereof

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

Active Publication Date: 2013-02-27
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 idea of ​​the present invention is that because GR and NSR are two mature technologies for NSF, and the two are independent of each other, neither dependent nor mutually exclusive, and each has advantages and disadvantages. Therefore, in the group that requires NSF In the network environment, the user can flexibly configure these two startup methods, that is, after the active / standby switch, the router can select the optimal startup method according to the prior configuration and equipment operating conditions.

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

[0034] A router that can realize the non-disruptive forwarding of the routing protocol from the intermediate system to the intermediate system, and its structure is as figure 1 As shown, it includes a configuration unit and a processing unit. The function of each unit is described below.

[0035] The co...

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PUM

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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 forwardingof 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 method for switching between active and standby. Background technique [0002] NSF (Non-Stop Forwarding, uninterrupted forwarding) is a solution to improve the reliability of network operation. It can ensure that when there is a problem with the control plane of the device, the forwarding plane will not be affected, and the data forwarding will not be interrupted, thus protecting the equipment. Key business is not affected. In general, carrier-grade equipment is usually based on reliability considerations, and the hardware generally adopts the method of active and standby redundant backup to implement NSF technology, and the control plane and the 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...

Claims

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Application Information

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