ITU-T RACF implementation for application-driven QoS control in MPLS networks

Authors:
B. Martini;F. Baroncelli;V. Martini;K. Torkman;P. Castoldi
Affiliations:
National Laboratory of Photonic Networks, Consorzio Nazionale Interuniversitario per le Telecomunicazioni, Pisa, Italy;National Laboratory of Photonic Networks, Consorzio Nazionale Interuniversitario per le Telecomunicazioni, Pisa, Italy;Center of Excellence for Information and Communication Networks Engineering, Scuola Superiore Sant'Anna, Pisa, Italy;Center of Excellence for Information and Communication Networks Engineering, Scuola Superiore Sant'Anna, Pisa, Italy;Center of Excellence for Information and Communication Networks Engineering, Scuola Superiore Sant'Anna, Pisa, Italy
Venue:
IM'09 Proceedings of the 11th IFIP/IEEE international conference on Symposium on Integrated Network Management
Year:
2009

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Abstract

Within the ITU-T Next Generation Network (NGN) architecture, the Resource Admission Control Function (RACF) has been designated to perform the application-driven QoS control across both access and core networks. However, an actual RACF implementation acting on MPLS metro-core networks does not exist since RACF lacks of the capability to configure QoS policies on MPLS network nodes. This prevents an effective end-to-end QoS control in a metro-core scenario on a per-application basis. This work presents a specific implementation of RACF operating over an MPLS network domain. This RACF implementation is applied to a testbed where a Video Client application requests a real-time video data transfer from a Video Server through an MPLS network. The admission control is performed upon service request based on video requirements and network resource availability. The differentiated traffic treatment on per-flow basis is realized through setting of MPLS DiffServ-aware Traffic Engineering (TE) capabilities using the NETCONF protocol. Effective traffic differentiation is achieved in a multi-service network scenario and thus it validates NETCONF as candidate protocol for policy provisioning in MPLS networks.