Li Zhenbin | Huawei | lizhenbin@huawei.com |
Jiang Rui | Huawei | henry.jiangrui@huawei.com |
Lu Kai | Huawei | lukai1@huawei.com |
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On a traditional IP network, devices calculate their respective paths in a dynamic and distributed manner. The entire network is divided into multiple antonomous systems(ASs), andan Interior Gateway Protocol(IGP) runs on the devices within each AS. The IGP enables devices within an AS to obtaiin the instra-AS network topology and use the same algorithm to calculate routes. Devices in different ASs use Border Gateway Protocol(BGP) to exchange routes. If a link or device fails, the IP network layer triggers route convergence to protect data traffic. However, if you want to manually optimize traffic paths on a traditional IP network, you will encounter the following difficulties.
To address the preceding issues and improve bandwidth usage and service quality, the SDN-based RR+ solution is introduced. The solution not only enables VIP traffic to be reliably transmitted, but also enables traffic to be evenly shared among links to improve bandwidth usage.