Method and device for policy-based routing management

Abstract

The invention discloses a method for policy-based routing management, which comprises the following steps that: when a primary node receives traffic meeting a policy-based routing condition, the primary node looks up whether session information of the traffic is stored or not according to identification information of the traffic; if the session information of the traffic is not looked up, the primary node establishes the session information for the traffic, wherein the session information comprises an entrance interface and an exit interface of the traffic; if the session information of the traffic is looked up, the primary node compares the exit interface recorded in the session information with the entrance interface of the traffic to judge whether the exit interface and the entrance interface are the same; and if a comparison result indicates the exit interface and the entrance interface are the same, the primary node transmits the traffic to a previous primary node and sets the policy-based routing to be invalid. The method and the device for the policy-based routing management can effectively regulate the policy-based routing and optimize a traffic forwarding path.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for policy routing adjustment. Background technique [0002] At present, in order to ensure the reliability of the backbone network, the design of the backbone network requires extremely high redundancy, such as figure 1 As shown, all network nodes must have a symmetric redundant node, and all links must have a symmetric redundant link. So that when a node or a link fails, the network can quickly switch traffic to another symmetrically redundant node or link, reducing service interruption time and improving system reliability. [0003] At the same time, in order to effectively reduce costs, the backbone network adopts the networking method of high-speed links with low-speed links, that is, a high-speed bandwidth link is used to carry core services. This high-speed link is called the main link. The node is called the master node; at the same time, a low-...

AI Technical Summary

Problems solved by technology

However, according to the route on the backup router, when the uplink is abnormal, the backup router sends the received traffic to the active router. Therefore, the backup router returns the traffic sent by the active router to the active router, and then the active router Send traffic to the upper-level node, resulting in unnecessary hops between the active router and the backup router, reducing traffic forwarding efficiency

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