A customer payload within L2oGRE can be extracted onto a PW SAP inside an SRĀ OS node. This PW SAP can be configured under an interface, subscriber interface, or an Epipe. When on a PW SAP, customer traffic can be passed further into the network to its destination using Layer 2 or Layer 3 services. End-to-end Layer 2 and Layer 3 scenarios are described in the following sections.