Method, device and system for building corresponding relationship between private network label and primary VRF (VPN (virtual private network) routing and forwarding table)

Abstract

The invention discloses a method, a device and a system for building a corresponding relationship between a private network label and a primary VRF (VPN (virtual private network) routing and forwarding table), relates to the technical field of communication, and improves the maintenance efficiency of the private network label to a certain degree. According to the concrete embodiment of the invention, the method comprises the steps that first VRF equipment sends equipment identifications of the first VRF equipment, the private network label corresponding to the first VRF equipment, equipment identifications of original VRF equipment and indexing information of original VRF to second VRF equipment; the second VRF equipment stores all the information and a corresponding relationship of the information. Further, VPN flow rate analysis equipment obtains the corresponding relationship, and can collect flow rate data from the second VRF equipment, and further, the equipment identifications of the original VRF equipment and the indexing information of the original VRF are obtained according to the flow rate, so a VPN example of the flow rate attribution is determined so that the VPN flow rate is determined. The technical scheme disclosed by the invention is mainly applied to the VPN flow rate statistical process.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method, device and system for establishing a corresponding relationship between a private network label and an original VRF (VPN Routing and Forwarding Table, VPN routing and forwarding table). Background technique [0002] At present, in order to improve network operation and maintenance security, MPLS (Multiprotocol Label Switch, multi-protocol label switching) VPN (Virtual Private Network, virtual private network) is deployed to control user access and carry different services. Among them, MPLS VPN is an IP-VPN based on MPLS technology, which is a kind of L3VPN (Layer3Virtual Private Network, Layer 3 VPN). It uses BGP (Border Gateway Protocol, Border Gateway Protocol) to publish VPN routes on the backbone network of service providers. MPLS forwards VPN packets on the service provider's backbone network. For example, when data packets are transmitted between...

AI Technical Summary

Problems solved by technology

Furthermore, when the PE device sends the data packet to the destination PE device, the private network label and the destination PE device identifier can be obtained from the header of the data packet, and the private network label and the destination PE device ID can be obtained based on this information. IP, and then determine the VPN instance (that is, the VPN service) to which the data packet belongs, thereby determining the flow of the VPN service. However, since the private network label corresponding to the VRF will change in the cross-domain scenario, when counting traffic and other operations, It is necessary to allocate private network label ranges on a large number of PE devices, which requires manual maintenance of the allocated private network label information, resulting in low maintenance efficiency of private network label information, and is not conducive to subsequent operations such as traffic statistics

Images