Flush Routing, MAC, and ARP Tables for a Port

Flush or clear the routing tables for administrative and troubleshooting purposes. The clear and flush commands perform the same function; they remove the contents of the table.

Procedure

Enter GigabitEthernet Interface Configuration mode:

enable

configure terminal

interface GigabitEthernet {slot/port[/sub-port][-slot/port[/sub-port]][,...][slot/all][all]}

Note

If the platform supports channelization and the port is channelized, you must also specify the sub-port in the format slot/port/sub-port.
Flush IP routing tables by port:

action flushIp
Flush the MAC address tables by port:

action flushMacFdb
Flush ARP tables by port:

action flushArp
Flush all tables with one command:

action flushAll
Exit to Global Configuration mode:

exit
Clear a routing table for a port:

clear ip route gigabitethernet {slot/port[sub-port]}

Example

Switch:1>enable
Switch:1#configure terminal
Switch:1(config)#interface gigabitEthernet 1/1
Switch:1(config-if)#action flushAll
Switch:1(config-if)#exit
Switch:1(config)#clear ip route gigabitethernet 1/1

Variable Definitions

The following table defines parameters for the clear ip route gigabitethernet command.


Variable	Value
{slot/port[/sub-port]}	Identifies a single slot and port. If the platform supports channelization and the port is channelized, you must also specify the sub-port in the format slot/port/sub-port.