Method for selecting exit link according to flow and routing equipment of converting flow

Abstract

A method of selecting outlet link for flow rate includes setting service policy corresponding to each service stream in advance, obtaining information connecting to the other member route device by each member route device, controlling obtained information and judging whether outlet link of current service stream is consistent to its service policy or not according to flow rate information and said service policy when flow rate information of service stream is received, adjusting outlet link of current service stream according to connection information between various member route devices if it is not.

Description

technical field [0001] The invention relates to a method for flow selecting an egress link and a routing device for forwarding flow. Background technique [0002] At present, enterprise networks generally have high-bandwidth internal networks and low-bandwidth egress links, that is, the egress link of the enterprise network to an ISP (Internet Server Provider, Internet Service Provider) usually has a very low bandwidth. With the continuous growth of network traffic, the egress link has increasingly become the transmission bottleneck of the enterprise network. [0003] Correspondingly, the technology of selecting egress links based on user-configured traffic emerges as the times require. In the prior art, the method for traffic to select its own egress link is: the control router formulates the performance policy that must be satisfied when the traffic is forwarded on the respective egress link for the traffic of interest to the user, and when each member routing device forw...

AI Technical Summary

Problems solved by technology

In view of the situation that it is necessary to adjust different traffic to different optimal egress links according to different services, the control router in the prior art only configures a single routing policy for the destination address of the traffic when formulating the routing policy, which cannot Support flow control according to business

like figure 1 As shown, the destination addresses of the voice flow and data flow are both in the 1.1.1.1 network segment. For the voice flow, if the egress link with the shortest delay time is satisfied, it should be an egress link; and for the data flow, the packet loss is satisfied The egress link with the lowest rate should be another egress link. Since the current method of selecting an egress link assigns the egress link by identifying the destination address, it is impossible to distinguish the traffic of these two different services. This method is used for routing-based adjustments Afterwards, they will be regarded as the same traffic, and thus be adjusted to the same egress link, and it is impossible to realize the function of selecting the optimal egress link for different service flows for forwarding.

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