The goal of this project is the study and development of advanced network services for GRNET’s network. In particular, the Quality of Service, Managed bandwidth Service and Administration of MPLS Virtual Private Network services will be studied and designed for GRNET’s network. Next, a new tool, for the administration of these services, will be developed that will accept requests for the users of the services and will decide if the requests can be supported (implemented) depending on the network resources each time. Also, scope of this project will be the investigation and implementation of the interconnection between CCC-AtoM as well as the implementation of L2TP tunnels over MPLS. Finally, this project includes 4 more research studies that are IPv6 Quality of Service, IPv6 over MPLS, multicast over MPLS and Layer 2 optimizations of MAN networks respectively.