-122Address Resolution Protocol (ARP)

arp

Use this command to add a static entry in the Address Resolution Protocol
(ARP) cache. Use the no form to remove an entry from the cache.
Syntax
arp ip-address hardware-address
no arp ip-address
•ip-address - IP address to map to a specified hardware address.
•hardware-address - Hardware address to map to a specified IP address.
(The format for this address is xx-xx-xx-xx-xx-xx.)
Default Setting
No default entries
Command Mode
Global Configuration
Command Usage
• The ARP cache is used to map 32-bit IP addresses into 48-bit hardware
(i.e., 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 entrie s allowed in the ARP cache is
Command Function Mode Page
arp Adds a static entry in the ARP cache GC 3-12
2
arp-timeout Sets the time a dynamic entry remains in the ARP
cache
GC 3-12
3
clear arp-cache Deletes all dynamic entries from the ARP cache PE 3-12
4
show arp Displays entries in the ARP cache NE,
PE
3-12
4
ip proxy-arp Enables proxy ARP service VC 3-12
5