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.
Console(config)# arp 198.133.219.232 00:00:0c:40:0f:bc ethernet
1/e6
arp timeout
The arp timeout Global Configuration mode command configures how long an entry remains in the
ARP cache. Use the no form of this command to return to the default configuration.
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.
Example
The following example configures the ARP timeout to 12000 seconds.
Console(config)# arp timeout 12000
IP Addressing Commands
205