Reference Guide

IPv4 Routing | 635
Related
Commands
clear arp-cache
c e s
Clear the dynamic ARP entries from a specific interface or optionally delete (no-refresh) ARP
entries from CAM.
Syntax
clear arp-cache [vrf name | interface | ip ip-address] [no-refresh]
Parameters
Command Modes
EXEC Privilege
Command
History
show interfaces Displays the ARP timeout value for all available interfaces.
vrf name
E-Series Only: Clear only the ARP cache entries tied to the VRF process.
interface
(OPTIONAL) Enter the following keywords and slot/port or number information:
• For a 1-Gigabit Ethernet interface, enter the keyword
GigabitEthernet
followed by the slot/port information.
• For the Management interface, enter the keyword
ManagementEthernet
followed by the slot/port information. The slot range is 0-1 and the port range is
0.
• For a Port Channel interface, enter the keyword
port-channel followed by a
number:
C-Series and S-Series Range: 1-128
E-Series Range: 1 to 32 for EtherScale, 1 to 255 for TeraScale and 1 to 512 for
ExaScale.
• For a SONET interface, enter the keyword
sonet followed by the slot/port
information.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet followed by the slot/port information.
• For a VLAN, enter the keyword
vlan followed by a number from 1 to 4094.
ip ip-address
(OPTIONAL) Enter the keyword ip followed by the IP address of the ARP entry
you wish to clear.
no-refresh (OPTIONAL) Enter the keyword no-refresh to delete the ARP entry from CAM.
Or use this option with
interface or ip ip-address to specify which dynamic
ARP entries you want to delete.
Note: Transit traffic may not be forwarded during the period when deleted
ARP entries are resolved again and re-installed in CAM. Use this
option with extreme caution.
Version 8.2.1.0 Support 4094 VLANs on E-Series ExaScale (prior limit was 2094)
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.9.1.0 Introduced VRF on the E-Series
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.2.1.1 Introduced on E-Series