SR OS TPSDA supports hybrid access deployments where the BNG acts as a Serving Gateway (SGW), PDN Gateway (PGW), and HAG. In this model, both the fixed access and wireless access links share the same Layer 3 IP/IPv6 address. The RG/HAG determines which Layer 2 connection should be used. To support this model, SR OS supports GTP termination and ESM connection bonding. The BNG is the Layer 3 gateway in this model and attracts all IP traffic. Multicast traffic is supported.
Figure: SGW/PGW/BNG integrated hybrid access gateway shows a sample hybrid access deployment with a BNG-based HAG.
