The IP network configurator (IPNC) is an extensible, scalable infrastructure for IP network and services provisioning. It provides necessary components to support high-level management applications. The most important goal of the IPNC is to enable network wide management of the IP networks while encapsulating the details about different network element vendors, different command line interface (CLI)/SNMP versions, different access methods etc. This provides high level APIs to applications shielding most of the element specific details. The IP network configurator tool currently supports CLI and SNMP to manage the IP networks transparently. It analyzes the issues related to configuration of the network of routers to consistently provision associated IP services with a minimal user input. Our architecture is applicable to all IP services and we specifically describe our implementation of the provisioning of the OSPF routing protocol.