Routed subscriber hosts

A routed subscriber host associated route, as shown in Figure: Routed subscriber hosts, is a global routable subnet/prefix behind a routed CPE or Home Gateway. The routed CPE is identified in the BNG as an ESM subscriber host: QoS, accounting and anti-spoofing is enforced per CPE. The associated routes are installed in the BNG route table with next-hop pointing to the routed subscriber host’s WAN address.

Figure: Routed subscriber hosts

Routed subscriber host associated routes are supported on IES/VPRN subscriber interfaces in a routed CO configuration. To put a SAP or MSAP in routed subscriber mode, the anti-spoof type for the SAP or MSAP must be configured to nh-mac:

configure
    service ies/vprn <service-id>
        subscriber-interface <ip-int-name>
            group-interface <ip-int-name>
                sap <sap-id>
                           anti-spoof nh-mac

configure
    subscriber-mgmt
        msap-policy <msap-policy-name>
            ies-vprn-only-sap-parameters
                anti-spoof nh-mac 

Routes associated with a routed subscriber host (known as managed routes) can be learned in the following ways:

• managed routes configuration for a static host

• the RADIUS or NASREQ authentication [22] Framed-Route and [99] Framed-IPv6-Route attributes

• advertised using an ESM dynamic BGP peer

• learned using a RIP listener neighbor (IPv4 routes only)

• the IPv6 Prefix Delegation prefix as a managed route