Command Line Interface
1024 1553-KDU 137 365 Uen D 2006-06-16
Command Mode
Global Configuration
Command Usage
• The ARP cache is used to map 32-bit IP addresses into 48-bit hardware
(that is, Media Access Control) addresses. This cache includes entries
for hosts and other routers on local network interfaces defined on this
router.
• The maximum number of static entries allowed in the ARP cache is 128.
• A static entry may need to be entered in the cache if there is no
response to an ARP broadcast message. For example, some
applications may not respond to ARP requests or the response arrives
too late, causing network operations to time out.
Example
Related Commands
clear arp-cache (section 7.25.8 on page 1025)
show arp (section 7.25.9 on page 1026)
7.25.7 arp-timeout
This command sets the aging time for dynamic entries in the Address Resolution
Protocol (ARP) cache. Use the no form to restore the default.
Syntax
arp-timeout <seconds>
no arp-timeout
seconds - The time a dynamic entry remains in the ARP cache.
(Range: 300-86400; 86400 is one day)
Console(config)#arp 10.1.0.19 01-02-03-04-05-06
Console(config)#
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