As businesses are spreading to different locations they require a strong 

and secure way of communication between the different offices. There 

are different services which require nonstop flow of traffic. The 

multimedia applications with voice and video needs more priority than 

other applications, as it is sensitive to delay. The MPLS (Multiprotocol 

Label Switching) based VPN (Virtual Private Network) can provide QoS 

(Quality of Service) features. This paper investigate on how DiffServ 

QoS Model parameters over MPLS VPNs environment can help the 

enterprise network customers to maintain the quality for their multimedia 

application usage in their network. To test our approach, a MPLS VPN 

Traffic Engineering approach was configured on two distinct enterprise 

businesses and MPLS VPN networking with and without DiffServ QoS 

parameters for voice, email and data were implemen