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System and method of route inhibiting

A routing and counting technology, applied in the field of communication, can solve problems such as the impact of network availability

Inactive Publication Date: 2011-12-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the IGP protocol directly suppresses the route oscillation, usually the routes of the optimal path and the suboptimal path will be suppressed at the same time, thus affecting the availability of the network.

Method used

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Embodiment Construction

[0033] The main idea of ​​the present invention is that, by recording and screening the next hop changes of the routes, the vibration suppression of the corresponding routes is realized. First, the routing protocol calculates the optimal route to the destination network segment; second, records the non-optimal next-hop list related to the optimal route; third, when the route changes, recalculate the optimal route and the corresponding non-optimal Next hop list, where, if the destination network segment is unreachable after the route changes, it is considered that the next hop corresponding to the route has a shock, so that the corresponding route has a shock, if the destination network segment is still reachable, but other If the next hop changes, if the next hop is deleted, compare the deleted next hop with the currently recorded non-optimal next hop list, if the deleted next hop is not in the current non-optimal In the one-hop list, it is considered that the route has a flap...

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Abstract

The invention discloses a system and a method for inhibiting paths, wherein the method comprises following steps: numbering the frequency of oscillations which take place on an optimum path which reaches to an objective net path, inhibiting the optimum path by an inhabitation execution unit under the condition that statistical results of a frequency statistic unit reach to an inhabitation threshold. The invention can prevent the condition that the optimum path and a suboptimum path are inhibited simultaneously due to the oscillations of the optimum path from happening and thereby the invention is more suitable in an IP network which is deployed with rapid convergence strategies.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a routing suppression method. Background technique [0002] From the perspective of network operation, IP network, as a bearer network, needs to provide high reliability, high availability, and fast network failure recovery capability. To this end, network service providers will deploy fast fault discovery mechanisms such as bidirectional forwarding detection technology (Bidirectional Forwarding Detection, referred to as BFD), and IGP fast-convergence mechanisms such as fast rerouting technology FRR (Fast rerouting) in the IP bearer network. -route) etc. The purpose of deploying these mechanisms is to quickly detect the fault and quickly switch over the service when the network fails, so as to protect the service. [0003] However, when the physical link or route in the network is unstable, this fast fault discovery and service switching mechanism will instead ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/20H04L12/26H04L12/56H04L45/02
Inventor 金昊朱彤张征
Owner ZTE CORP