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Route notification method and equipment

A routing and equipment technology, applied in the field of communications, can solve the problems of inability to forward traffic and traffic interruption, and achieve the effect of avoiding traffic interruption and business interruption.

Active Publication Date: 2012-11-07
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, if the RTB advertises the route to the RTE first and then distributes the hardware, in the process of traffic switching, the traffic has been sent to the RTB, but the RTB cannot forward the traffic (that is, the route has not been downloaded). sending hardware), resulting in traffic interruption

Method used

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  • Route notification method and equipment

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Embodiment Construction

[0033] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] Aiming at the problem of traffic interruption in the prior art, the routing delay sending mechanism can be adopted in the embodiment of the present invention, aiming at image 3 In the application scenario shown, the processing process of the routing delay sending mechanism is as follows Image 6 Shown; Among them, after the BGP neighbor between RTA and RTB fails, and RTE switches the traffic to the link of RTA->RTC->RTD->RTE, if the BGP neighbor relationship between RTA and RTB is restored, Then RTA re-advertises the route to RTB. At this time, RTB does not immediately notify RTE of the route on RTA, but delays sending the route, that is, RTB waits until it sends the route on RTA to its own hardware (used to guide its own hardware to carry out traffic After forwarding), the route on RTA is notified to RTE; in this way, RTE re-optimizes the rou...

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Abstract

The invention discloses a route notification method and equipment. The method comprises: intermediate network equipment receiving a route released by route notification equipment when the route notification equipment releases the route, lowering the priority of the route through routing policy, and notifying the route with the lowered priority to route receiving equipment; and notifying the route to the route receiving equipment when the intermediate network equipment determines that the route receiving time reaches a preset delay wait time. The route notification method provided by the invention can obviate traffic interruption so as to obviate the service interruption caused thereby.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a routing notification method and device. Background technique [0002] The network device guides traffic forwarding by running a dynamic routing protocol. Specifically: the network device sends the optimal route in the dynamic routing protocol learned by the device to the hardware to guide traffic forwarding, and the dynamic route learned by the device The optimal route in the protocol is advertised to neighbors; figure 1 As shown, it is a schematic diagram of the timing sequence of sending the route to the hardware and notifying the neighbors under ideal conditions; where the network device first sends the route 1 to the hardware, and after the hardware is successfully delivered, it notifies the neighbor of the route 1, and then the network device will Route 2 is delivered to the hardware, and after the hardware is successfully delivered, route 2 is advertised to...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L45/24
Inventor 章海锋周轶凡
Owner NEW H3C TECH CO LTD
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