Switching

I am newer in junier.
I need to configured FBF to redirect traffic.
I know that I can define two or more qualified-next-hop in routing-instances to redirect triffic.
But if all of the qualified-next-hop is unreachable〈interface down〉, how should I configure that packet forwarding refer the routing-table？
Because my defult route was advertised from bgp peer, I don't want to define the last qualified-next-hop is bgp peer ip.

Sorry for my English

My configuration is follow:

    ge-0/0/6 {
        unit 0 {
            family inet {
                address 192.168.11.2/24;
            }
        }
    }
    ge-0/0/8 {
        unit 0 {
            family inet {
                address 192.168.12.2/24;
            }
        }
    }
    ge-0/0/10 {
        unit 0 {
            family inet {
                address 192.168.13.2/24;
            }      
        }
    }
 
routing-options {
    interface-routes {
        rib-group inet rib1;
    }
    rib-groups {
        rib1 {
            import-rib [ inet.0 r1.inet.0];
        }
    }
    autonomous-system 1000;
}

firewall {
    family inet {
        filter fil {
            term t1 {
                from {
                    source-address {
                        20.1.30.0/24;
                    }
                }
                then {
                    routing-instance r1;
                }
            }
         
            term default {
                then accept;
            }
        }          
    }              
}

routing-instances {
    r1 {
        instance-type forwarding;
        routing-options {
            static {
                route 0.0.0.0/0 {
                    qualified-next-hop 192.168.12.1 {
                        preference 100;
                    }
                    qualified-next-hop 192.168.13.1 {
                        preference 150;
                    }
                    qualified-next-hop 192.168.11.1 {
                        preference 200;
                    }
                }
            }
        }
    }

With FBF the firewall action selects a new routing table for a lookup instead of just a next hop.  This means that based on firewall policy traffic can be moved towards different routing-instances which can accommodate dynamic routing protocols to calculate best path reachability to upstream topologies.

One option would be to skip the rib-groups and use a policy-statement to control which routes are imported into your routing instance.  You can still use the static routes if you like, but you can also import the 0/0 route which you say is being advertised from BGP as well.

policy-options {
    policy-statement FBF-import {
        term directs {
            from {
                instance master;
                protocol direct;
            }
            then accept;
        }
        term bgp {
            from {
                instance master;
                protocol bgp;
                route-filter 0.0.0.0/0 exact;
            }
            then accept;
        }
        term rest {
             then reject;
        }
}
routing-instances {
    FBF {
        instance-type forwarding;
        routing-options {
            static {
                route 0.0.0.0/0 {
                    qualified-next-hop 192.168.12.1 {
                        preference 100;
                    }
                    qualified-next-hop 192.168.13.1 {
                        preference 150;
                    }
                    qualified-next-hop 192.168.11.1 {
                        preference 200;
                    }
                }
            }
            instance-import FBF-import;
        }
    }
}

Hi,

For FBF (filter based forwarding/policy based routing), do we actually need to use rib-group?

Can we use "metric" instead of "preference"?