Fixed wireless access sessions

To configure Fixed Wireless Access (FWA) sessions, the operator must provision a GTP UPF data endpoint using the gtp upf-data-endpoint command in the service vprnor router context. The endpoint must reference an interface in the routing instance where GTP-U tunnels to the RAN are set up. Additionally, an FPE construct is required to enable datapath functions in the router. The FPE must be configured as type multi-path. See the 7450 ESS, 7750 SR, 7950 XRS, and VSR Interface Configuration Guide for more information.

The system automatically creates all the required constructs to correctly handle FWA sessions. Additionally, the system load-balances sessions over each FPE path, using the path that is the least loaded when the session is set up.

The following example shows provisioning of a UPF data endpoint and multipath FPE.

[gl:/configure service vprn "to_ran" gtp upf-data-endpoint]
A:admin@BNG-UPF# info
    interface "gtp_u_endpoint"
    fpe 1
[gl:/configure fwd-path-ext fpe 1]
A:admin@BNG-UPF# info
    multi-path {
        path 1 {
            pxc 1
        }
    }
    application {
        sub-mgmt-extension true
    }

Unlike in fixed access sessions, a default IBCP tunnel is not used for FWA sessions because the initial session setup is out-of-band and does not involve the BNG UPF. Per-session IBCP is supported to forward DHCP (Deferred Allocation), ICMPv6 RS/RA, and DHCPv6 packets.