This paper firstly analyses the architecture and services of MAN. Then according to the technologic principle and advantages of V-SWITCH, the paper puts forward a metropolitan interconnection solution based on V-SWITCH and the network module mode with BRAS aside by SR. 从城域网的架构和业务分析入手,根据V-SWITCH技术原理和优势,提出了采用V-SWITCH技术实现同城互联业务的方案以及BRAS侧挂于SR的组网模型。