Reference Guide

clear arp-cache
Clear the dynamic ARP entries from a specific interface or optionally delete (no-refresh) ARP entries from the
content addressable memory (CAM).
S4820T
Syntax
clear arp-cache [interface | ip ip-address] [no-refresh]
Parameters
interface (OPTIONAL) Enter the following keywords and slot/port or number
information:
• For the Management interface, enter the keyword
ManagementEthernet then the slot/port information. The
slot range is from 0 to 1 and the port range is 0.
• For a Port Channel interface, enter the keywords port-
channel
then a number. The range is from 1 to 128.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
• For a 40-Gigabit Ethernet interface, enter the keyword
fortyGigE then the slot/port information.
• For a VLAN, enter the keyword vlan then a number from 1 to
4094.
ip ip-address (OPTIONAL) Enter the keyword ip then the IP address of the ARP
entry you wish to clear.
no-refresh (OPTIONAL) Enter the keywords 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.
Command Modes EXEC Privilege
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.5.1.0 Added support for 4-port 40G line cards on ExaScale.
Version 8.3.7.0 Introduced on the S4810.
Version 8.2.1.0 Added support for 4094 VLANs on the E-Series ExaScale (the prior
limit was 2094).
Version 8.1.1.0 Introduced on the E-Series ExaScale.
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