Application routing load balancing (ARLB) to support QoS for VoIP application over a VPNs environment

VoIP (B. Douskalis, 2000) is not appropriate for non-QoS networks, which are the majority of networks in the Internet. It is therefore difficult to guarantee QoS for a VoIP over Virtual Private Networks (VPNs) environment (M. Gunter et al., 1999; Yoshihiro Ito et al., 1998). The paper presents an idea which will alleviate such a limit. The proposed idea is to use a dial up line as an additional connection to elevate degrading bandwidth performance, due to the unreliability of the Internet. However, existing load balancing tools implemented on the router are not appropriate for implementation over a VPN environment. Therefore, the authors propose application routing load balancing (ARLB) for a VPN environment.