clear arp-cache

Last Updated : Oct 20, 2015 |
Deletes all dynamic entries from the ARP cache.
Prolog information

Syntax

clear arp-cache [interface | vlan_id | ip_address[mask]]

Parameters

Parameter
Description
Possible Values
Default Value
interface
The interface name for which to delete entries
vlan_id
The VLAN ID for which to delete entries
1-4090
ip_address
The host IP address to clear
mask
The IP mask of the subnet to clear

User level

read-write

Context

general

Examples

To flush all ARP entries:
Gxxx-001(super)# clear arp-cache
Flushing all arp entries
Flushed 22 ARP entries.
To flush ARP entries for an interface named FastEthernet :
Gxxx-001(super)# clear arp-cache fastethernet 
Flushing ARP cache entries on ifName fastethernet 
Flushed 1 ARP entries.
To flush ARP entries for one host address:
Gxxx-001(super)# clear arp-cache 156.16.11.32
Flushing ARP cache entry of host 156.16.11.32
Flushed 0 ARP entries.
To flush a range of ARP entries belonging to one subnet:
Gxxx-001(super)# clear arp-cache 156.3.2.33 255.255.255.0
Flushing ARP cache entries in the range [156.3.2.33, 255.255.255.0]
Flushed 0 ARP entries.