Network local congestion processing method based on OSPF protocol

Abstract

The invention discloses a network local congestion processing method based on an OSPF protocol and relates to the technical field of network local congestion processing. In the method, four parts of amonitoring module, a timing module, a processing module and an announcing module are composed. Firstly, in the process that a router operates the OSPF protocol, the monitoring module monitors the bandwidth utilization rate of a router interface in real time; and when the value is higher than an upper limit or lower than a lower limit, different processing schemes are adopted; secondly, the stateof the interface is judged; when the interface is in an idle state, a Cost-Down request message is sent to the processing module; when the interface is in a saturated state, a Hold-Timer is started; the state of the interface is monitored during the timing period of the Hold-Timer; if the interface is always in the saturated state, a Cost-Up request message is sent to the processing module; otherwise, the timer is shut down; then, when receiving the request message, the processing module modifies the cost value of the interface; finally, the announcing module broadcasts the link state information LSA, so that the router recalculates an optimal route.

Description

Technical field [0001] The invention relates to a network partial congestion processing technology, in particular to a network partial congestion processing method based on an OSPF protocol. Background technique [0002] OSPF (Open Shortest Path First) protocol, as a public protocol, can be applied to network equipment 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 locally congested and there are other sub-optimal routes with low bandwidth usage, the OSPF protocol cannot avoid the congested shortest path due to its algorithm principle, and business data traffic is likely to converge to the same link or the same interface. Circumstances, thereby continuously increasing the current congestion of the shortest path, resulting in a significant decline in network service q...

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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