In general, the traffic that various applications on
many hosts generate passes through a VPN. So the
distribution of the traffic within a VPN can be considered
same as the one passing in the Intemet outside a VPN,
assuming that VPN is mainly used hr intemetworking.
In addition to this, authors pay attention mainly to
bandwidth as the network resource kr reservation
@andwidth-Guaranteed VPN; BGVPN)