The customer asks when the router receives 4 detail VPNv4 routes and 1 default VPNv4 route from the RR routers, but only 3 routes are installed in VRF routing table.
With below conditions, routes in VPNV4 routing table can be installed in VRF routing table:
1) The routes with the same RT with which is configured in VRF, go to next step to judge.
2) All routes meet condition 1), the routes with the same RD with which is configured in VRF, will be installed.
3) All routes meet condition 1), the routes with different RD with which is configured in VRF, but is the “best” route, will be installed; otherwise will not be installed.