With the rapid development of Internet services, services like cloud-based games which are highly sensitive to network quality has gradually gained increasing proportion. Small and micro enterprises require cost-effective dedicated network access that delivers a secure, stable, and efficient Internet environment tailored to their specific operational demands. Functions related to subscriber’s SLA identification can be introduced to the vBNG to solve the problem. With acceleration strategies and filtering policies, the vBNG can sort the traffic and provide differentiated tunnel based on subscriber’s SLA. This Recommendation specifies scenarios, architecture, requirements and signalling procedures for subscriber SLA-based virtual Broadband Network Gateway.