PPPoE subscriber over softGRE tunnels on pseudowire interfaces over RLT

You can extend subscriber services over softGRE tunnels to pseudowire subscriber interface over redundant logical tunnel (RLT) interfaces for Wi-Fi access gateway (WAG) deployments in a PPPoE dual-stack network. This feature enhances forwarding-path redundancy and supports active-active or active-backup modes. You can use VLAN-tagged or untagged Ethernet frames. Support is limited to line cards from MPC2 to MPC9.