Method for controlling flow of IP data stream

Abstract

The invention discloses a method for controlling the flow of an IP data stream, which comprises the following steps: step 1, carrying out route and flow classified search on data messages based on a preset key word; step 2, carrying out message header processing and dyeing operation based on the matched table entries of the searching result; and step 3, carrying out follow-up action operations, wherein the matched table entries comprise next hop exit, data type, survival time, committed information rate (CIR), token count in bucket C (Tc), token count in bucket E (Te), committed burst size (CBS) and excess burst size (EBS). Based on the similarity between the precise route search and the flow control and the integral design combining the flow control and the precise route search, the invention can greatly simplify the difficulty in designing the flow control function for the IP data stream on the routing and switching device having the precise route search function, thereby lowing the design and production costs.

Description

technical field [0001] The invention relates to a method for supervising IP data flow, in particular to a method for supervising IP data flow combined with accurate routing search. Background technique [0002] IP network communication is usually bursty and intermittent. On an IP network, the burst rate of data flow is much higher than the average rate, and the burst rate of data flow can easily lead to congestion of the IP network, resulting in a sharp drop in the throughput of the IP network. [0003] An important and necessary function of IP QoS is to limit the traffic and bursts entering and leaving a certain network connection at the network application boundary through physical means on the link, and provide guarantee for the normal operation of the core network. In addition to being restricted by physical means on the link, traffic restriction can also be implemented through traffic policing technology. [0004] Traffic policing: It is to ensure that the speed of th...

AI Technical Summary

Problems solved by technology

[0018] 1) To distinguish data packets according to the data flow, it is necessary to judge the quintuple information of the packets, and the matching keywords are as high as 104 bits. The conventional design method will occupy a lot of logic resources

[0019] 2) The number of IP data flows in the physical line is very large, requiring a large number of meters, and the allocation and management of the meters is more complicated

[0020] 3) The length of IP data is variable, and it is difficult to count the length of packets

[0021] When transmitting IP data services, most IP data services hope that the IP network can provide a traffic monitoring service for each data flow, but most routing and switching devices can only provide services based on priority or network address

Images