Research on Application of Link Backup in Multi-export Network Based on Link Track Policy

A design method of control connectivity from local network to multi-ISP is presented on the basis of link track policy and PBR.This disposition plan overcomes the defects of traditional static access that the real time detection and the instantaneous shift of gateway fail to function in case of the failure of an ISP,realizes link backup,effectively loads balancing in multi-entry network,and solves the difficult problems of datacenter network break.The feasibility and practicability of the solution are verified by typical engineering.It provides a practical way to solve connection problems in multi-entry network.