Reference Guide

IP Addressing Commands 193
Default Configuration
This command has no default configuration.
Command Mode
Global Configuration mode
User Guidelines
• The software uses ARP cache entries to translate 32-bit IP addresses into 48-bit hardware
addresses. Because most hosts support dynamic resolution, static ARP cache entries do not
generally have to be specified.
Example
The following example adds IP address 198.133.219.232 and MAC address 00:00:0c:40:0f:bc to
the ARP table.
arp timeout
The arp timeout Global Configuration mode command configures how long an entry remains in
the ARP cache. To return to the default configuration, use the no form of this command.
Syntax
arp timeout seconds
no arp timeout
• seconds — Time (in seconds) that an entry remains in the ARP cache. (Range: 1 -
40000000)
Default Configuration
The default timeout is 60000 seconds.
Command Mode
Global Configuration mode
User Guidelines
• It is recommended not to set the timeout value to less than 3600.
Console(config)# arp 198.133.219.232 00:00:0c:40:0f:bc ethernet
1/e6