Policy-Based Routing (PBR) allows you to use ACLs and route maps to selectively modify and route IP packets in hardware. PBR route-maps allow you to define a set of destination IPs as the next- hop address for routing. These next-hop address can be used to by-pass the path determined by normal routing process for faster and better routing.
Prior to this release, PBR Next-hop support was available only for those routes that were directly accessible. Recursive next-hop resolution was not available for both IPv4 and IPv6 address families.
Enabling the recursive next-hop resolution feature allows you to use those routing IPs that are not directly connected. This is available for both IPv4 and IPv6 address families. When multiple next-hops are configured in the PBR route-map, some of which may be directly accessible, next-hops are evaluated from the top of the list of configured next-hops.
PBR route-map, order of evaluation starts from top to bottom.
When none of the configured next-hops are resolved, IP packets will fall-back to Layer 3 forwarding.