1. A method for managing a virtual private network, comprising: collecting performance data for a parameter from a plurality of customer edge routers and a plurality of provider edge routers associated with the virtual private network, wherein the parameter comprises a processor usage; correlating the performance data for identifying a performance exception based on a threshold for the parameter, wherein the correlating comprises: correlating the performance data to identify the performance exception affecting a customer edge router-provider edge router pair from the plurality of customer edge routers and the plurality of provider edge routers; and correlating the customer edge router-provider edge router pair for identifying an affected customer; and performing a trending analysis using the performance exception to predict a potential problem that will impact the virtual private network.