The document captures the default preference value (between and 255) for routes from various supported protocols.

For a wide range of features such as MPLS, MPLS-over-GRE, nexthop-groups, VPN, EVPN, BGP-LU, etc, the kernel injects CPU-generated packets into the hardware pipeline as a result of fwd*/txfwd kernel interfaces being used as next-hop devices on kernel routes.

On network devices, when a route is programmed, a certain portion of hardware resources is allocated and associated