For administrative and troubleshooting purposes, sometimes you must flush the routing tables. You can use EDM to flush the routing tables by VLAN or flush them by port. Use this procedure to flush the IP routing table for a port.
To flush routing tables by port for a VRF instance, first select the appropriate instance.
In a port context, all entries associated with the port are flushed. You can flush the ARP entries and IP routes for a port.
After you flush a routing table, it is not automatically repopulated. The repopulation time delay depends on the routing protocols in use.