The paper regards the problem of ASON/GMPLS network performance with hierarchical control plane structure in condition of incomplete domain network information. The authors propose the hierarchical ASON/GMPLS control plane architecture, which fulfills the requirements of modern optical networks and allows to control the multidomain network with requirement quality of service. The authors examine the scalability and properties of hierarchical control plane structure in order to indicate which parameters have significant impact on required quality of service. The analysis is performed with simulation method by using OMNeT++ discrete-event simulator. Obtained results are compared with results for flat control plane architecture.