[j-nsp] Configuration -- rib groups

[David Taylor]

Hi,
  can anyone explain what does this following script do .... Seems like we are pouring routes from one place to another ? If so why do we need this... Why do we use Rib groups ...?
   
  }
routing-options {
    graceful-restart;
    static {
        route 192.168.20.0/24 next-table OM.inet.0;
        route 10.10.0.0/24 next-table OM.inet.0;
    }
    rib-groups {
        OM_to_inet {
            import-rib [ OM.inet.0 inet.0 ];
            import-policy OM_to_inet;
        }
    }
   
  routing-instances {
    ZN {
        instance-type vrf;
        interface fe-0/3/1.100;
        interface fe-0/3/1.115;
        interface fe-0/3/0.200;
        route-distinguisher 10.1.26.17:3000;
        vrf-target target:64512:3000;
        vrf-table-label;
        routing-options {
            static {
                route 10.26.0.8/32 next-hop 10.26.0.8;
            }
        }
    }
    OM {
        instance-type vrf;
        interface e1-0/0/5.0;
        interface fe-0/3/1.130;
        interface ae0.315;
        interface lo0.1;
        route-distinguisher 10.1.26.17:3100;
        vrf-import reject-all;
        vrf-export reject-all;
        routing-options {
            interface-routes {
                rib-group inet OM_to_inet;
            }
        }
   
   
   
  --David.

       
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