Route releasing method and device

A technology for routing and equipment, applied in the field of route advertisement methods and equipment, to reduce the time of aging routes, improve efficiency, and avoid routing loops

Inactive Publication Date: 2014-07-23
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Obviously, after the route 100.1.1.0 / 24 fails, the route 100.1.1.0 / 24 needs to go through 16 hops on the ring (at this time, the metric value of the route 100.1.1.0 / 24 becomes 16), resulting in a routing loop

Method used

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  • Route releasing method and device

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Embodiment Construction

[0033] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a route publishing method to figure 1 It is a schematic diagram of an application scenario of an embodiment of the present invention. The method is applied to a RIP network (a network based on the RIP protocol) including multiple routing devices (such as network devices such as layer-3 routers), and the RIP network can be a ring network. That is, multiple routing devices in the RIP network form a ring network.

[0034] In the above application scenarios, such as figure 2 As shown, the route publishing method includes the following steps:

[0035] In step 201, the routing device obtains the device identifier of the routing device when it needs to publish an imported route or a local route. Wherein, the imported route is a route imported by the routing device from outside (that is, a route imported from outside the RIP network), and the local route is a route locally gene...

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PUM

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Abstract

The invention discloses a route releasing method and device. The method includes the steps that when a route device needs to release an import route or a local route to obtain a device identification of the route device, the device identification of the route device is used for generating a route releasing message, and the route releasing message carries the import route, or the local route and the device identification; the route device sends the route releasing message to other route devices; when the route device receives route releasing messages from other route devices, if the route releasing messages carry the device identification of the route device, the route device abandons the route releasing messages. In the embodiment of the route releasing method and device, after the route is invalidated, a route loop can be prevented from forming, and route calculating efficiency can be improved.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method and device for issuing routes. Background technique [0002] RIP (Routing Information Protocol, Routing Information Protocol) is a relatively simple IGP (Interior Gateway Protocol, Interior Gateway Protocol), mainly used in small-scale networks, such as campus networks and regional networks with simple structures. RIP is a protocol based on the distance vector algorithm. It uses the number of hops to measure the distance to the destination address. The number of hops is its measurement value. The measurement value is an integer between 0 and 15. Infinity means that the destination network or host is unreachable. [0003] Such as figure 1 As shown in the figure, it is a schematic diagram of a RIP network (a network based on the RIP protocol). Routing device A imports an external route 100.1.1.0 / 24, whose metric value is 0 (that is, the number of hops is 0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/703H04L45/28
Inventor 魏志广
Owner NEW H3C TECH CO LTD
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