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Method and device for sending update message in autonomous system loop network

An autonomous system and message technology, applied in the field of network communication, can solve the problems of wasting link bandwidth system resources, reducing system performance, etc., to achieve the effect of reducing the workload of sending and receiving and improving the utilization rate

Active Publication Date: 2017-08-11
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the sender may send update packets to the receiver that are discarded by the receiver, which wastes system resources such as link bandwidth and CPU usage, and reduces system performance.

Method used

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  • Method and device for sending update message in autonomous system loop network
  • Method and device for sending update message in autonomous system loop network
  • Method and device for sending update message in autonomous system loop network

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] figure 1 It is an exemplary schematic diagram of a BGP neighbor relationship in an AS loop network.

[0022] exist figure 1 In, a BGP neighbor relationship is established among the first router, the second router and the third router. Both the second router and the third router belong to AS 100 , and the first router belongs to AS 200 . The first router, the second router and the third router form a loop network.

[0023] In the prior art, after the first router constructs the update message by itself or receives the update message from the third router, it directly sends the update message to the second router without paying attention to whether the second router will discard the update message. The second router judges by itself whether to discard the...

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Abstract

The embodiment of the present invention proposes a method and a device for sending an update message in an autonomous system (AS) loop network. The AS loop networking includes a first router and a second router, and the second router is located in the first AS. The method includes: the first router receives the loopback capability value of the second router sent by the second router; the first router determines the AS path attribute contained in the Border Gateway Protocol (BGP) update message to be sent to the second router The number of the sequence numbers of the first AS; when the first router determines that the number of the sequence numbers of the first AS included in the AS path attribute is not greater than the loopback capability value of the second router, send a BGP update message to the second router arts. The embodiment of the present invention decides whether to send an update message to the receiving end according to the loopback capability value sent by the receiving end, which can effectively reduce the workload of sending and receiving the update message, and improve the utilization rate of the router's CPU and link bandwidth.

Description

technical field [0001] The embodiments of the present invention belong to the technical field of network communication, in particular to a method and a device for sending an update message in an autonomous system (Autonomous System, AS) loop network. Background technique [0002] The Border Gateway Protocol (BGP) is a dynamic routing protocol that can be used not only between different ASs, but also within the same AS. AS is a group of routers that have the same routing strategy and belong to the same technical management department. When BGP runs inside the same AS, it is called internal BGP (IBGP, Internal BGP); when BGP runs between different ASs, it is called external BGP (EBGP, External BGP). BGP defines Update messages for exchanging routing information between peers. An update message can advertise multiple reachable routes with the same path attribute, and can also revoke multiple unreachable routes at the same time. [0003] Currently, in the AS loop network, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/701
Inventor 刘永奎
Owner NEW H3C TECH CO LTD