A corporate network is a good choice for the enterprise to gain competitive advantages in an era of exploding needs for geographically dispersed information processing. This paper provides a research framework for the performance management of corporate networks. By viewing a corporate network as an integrated entity, this framework replaces an ineffective and ad-hoc approach with a structured and integrated management cycle. The framework is more likely to reduce losses due to overlapped individual performance enhancement activities. The performance management cycle is broken down into phases such as demand forecasting internetworking, data distribution, local configuration, performance evaluation, and system operation. A performance model is presented for evaluating the network performance experienced by users not by data bits.