A Method for Handling Local Network Congestion Based on OSPF Protocol

Abstract

The invention discloses a method for processing local network congestion based on the OSPF protocol, and relates to the technical field of processing local network congestion. The method has four parts including a monitoring module, a timing module, a processing module and a notification module. First of all, when the router is running the OSPF protocol, the monitoring module will monitor the bandwidth utilization rate of the router interface in real time. When the value is higher than the upper limit or lower than the lower limit, different processing schemes will be adopted; secondly, to judge the state of the interface, If the interface is in the idle state, then send the Cost_Down request message to the processing module, if the interface is in the saturated state, then start the Hold_Timer suppression timer, and during the Hold_Timer timing, monitor the state of the interface, if the interface has been in the saturated state, then Send the Cost_Up request message to the processing module, otherwise the timer will be closed; then when the processing module receives the request message, modify the cost value of the interface; finally, the notification module broadcasts the link state information LSA, so that the router recalculates the optimal routing.

Description

technical field [0001] The invention relates to a technology for processing local network congestion, in particular to a method for processing local network congestion based on the OSPF protocol. Background technique [0002] OSPF (Open Shortest Path First) protocol, as a public protocol, can be applied to network devices produced by any manufacturer. However, the OSPF protocol always calculates the path with the smallest cost value as the optimal route to forward data packets, and does not have the ability to adjust and process network congestion. If the current shortest path is partially congested, and there are other suboptimal routes with low bandwidth usage, OSPF cannot avoid the congested shortest path due to its algorithm principle, and it is easy for business data traffic to converge on the same link or the same interface. Therefore, the congestion degree of the current shortest path is continuously increased, resulting in a significant decline in the service qualit...

AI Technical Summary

Problems solved by technology

Traditional methods include packet elimination, flow control, packet suppression, etc. This method of exchanging speed for quality by discarding or suppressing some data packets reduces the utilization rate of bandwidth resources and limits the network transmission speed.

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