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A method for advertising route and revoking route and corresponding routing device

A routing and advertisement technology, applied in the field of IP network, can solve problems such as single detection conditions

Active Publication Date: 2020-12-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of realizing the present invention, the inventor finds that this method has many restrictions and limitations, for example, it only supports detection based on routing graphs, and the detection condition is single; and the route that requires notification is also the route to be detected. The coupling between the detection condition and the route to be notified is too strong

Method used

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  • A method for advertising route and revoking route and corresponding routing device
  • A method for advertising route and revoking route and corresponding routing device
  • A method for advertising route and revoking route and corresponding routing device

Examples

Experimental program
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Effect test

Embodiment 1

[0161] This embodiment provides a method for withdrawing routing and a corresponding routing device.

[0162] The inventors of the present invention have found through research that in an IP network, based on fast detection technologies, such as BFD (bi-direction forwarding detection), OAM (Operations Administration and Maintenance), etc., the fast detection of certain routes can be realized. undo. For example, when it is detected that the BFD session with a neighbor peer (neighbor routing device) is disconnected (down), the locally learned route from the neighbor peer is quickly revoked. However, in this way, the association detection condition for route revocation is too closely coupled with the revocation route, so the inventor proposes the following solution.

[0163] The method for revoking routing in this embodiment is as follows: figure 1 shown, including:

[0164] Step 110, the routing device obtains the route disassociation detection condition of the advertised rou...

Embodiment 2

[0188] This embodiment provides a method and a routing device for advertising a route based on an association detection condition.

[0189] The inventors of the present invention have discovered through research that when a route is advertised based on the route graph, it is detected whether the route to be advertised meets the matching condition of the route graph, and if it matches, the route is advertised, and the detected route and the advertised route are the same route. In this way, the association detection condition of the route advertisement is too closely coupled with the route of the advertisement. Therefore the inventor proposes the following scheme.

[0190] The method for advertising routes in this embodiment is as follows: image 3 shown, including:

[0191] Step 210, the routing device obtains the route advertisement association detection condition of the route to be advertised, and the route advertisement association detection condition includes detection ob...

Embodiment 3

[0218] This embodiment provides a method and a routing device for withdrawing routing. The difference from the first embodiment is that the detection condition based on the route cancellation in this embodiment is the route advertisement association detection condition in the second embodiment, and the route is withdrawn when the route advertisement association detection condition is not satisfied.

[0219] The method for revoking routing in this embodiment is as follows: Figure 5 shown, including:

[0220] Step 310, the routing device obtains the route advertisement association detection condition of the advertised route, and the route advertisement association detection condition includes detection objects other than the advertised route and their expected states;

[0221] The detection objects included in the routing advertisement association detection conditions and their expected states can be seen in Embodiment 2, and will not be repeated here.

[0222] In this step, ...

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Abstract

A method for routing advertisement and withdrawing a route and corresponding routing equipment. When withdrawing a route, the method includes: the routing equipment obtains a route withdrawal association detection condition of an advertised route, and the route withdrawal association detection condition includes Detecting the object and its expected state; if the routing device determines that the detection condition of the route disassociation is met, it notifies the neighbor peer to which the advertised route is advertised to withdraw the advertised route. The method for announcing a route includes: the routing device acquires the route advertisement association detection condition of the route to be advertised, and the route advertisement association detection condition includes detection objects other than the route to be advertised and their expected states; if the routing device determines When the route advertisement association detection condition is satisfied, the route to be advertised is advertised to the neighbor peers. The above solution can enable the IP network element to more flexibly advertise routes to neighboring peers, and can also quickly withdraw routes.

Description

technical field [0001] The present invention relates to the field of IP (Internet Protocol) network, more specifically, relates to a method for announcing a route and withdrawing a route and a corresponding routing device. Background technique [0002] In the current IP network, for some routes that have been advertised, the routing device will withdraw the route after detecting the aging of the neighbors or after the outgoing interface (down) of the route. Since it takes a long time to detect the aging of neighbors, usually tens of seconds, it is slow to withdraw routes. Even if the routing protocol is supported in some scenarios to bind the BFD session, when the BFD session is disconnected, the route is quickly revoked, but only when the BFD session with the route notification end is disconnected, the route learned from the route notification end will be revoked, which is too restrictive and not enough flexible. [0003] On the other hand, according to the relevant routi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L12/721H04L45/28
Inventor 赵科强马长征李春红
Owner ZTE CORP
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