IP Addressing Commands 209
arp
The arp Global Configuration mode command adds a permanent entry in the Address Resolution
Protocol (ARP) cache. Use the no form of this command to remove an entry from the ARP cache.
Syntax
•
arp
i
p_addr hw_addr
{
ethernet
i
nterface-number
|
vlan
vlan-id
|
port-channel
number
}
•
no arp
i
p_addr
{
ethernet
i
nterface-number
|
vlan
vlan-id
|
port-channel
number
}
•
ip_addr
— IP address or IP alias to map to the specified MAC address.
•
hw_addr
— MAC address to map to the specified IP address or IP alias.
•
ethernet
interface-number
— Ethernet port number.
•
vlan
vlan-id
— VLAN number
.
•
port-channel
number
— Port-channel number.
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 need to be specified.
Console# show ip interface
Gateway IP Address Type Activity Status
--------------------- ----------- ---------------
10.7.1.1 Static Active
IP address Interface Type
------------------- ------------ ------------
10.7.1.192/24 VLAN 1 Static
10.7.2.192/24 VLAN 2 DHCP
5400_CLI.book Page 209 Wednesday, December 17, 2008 4:33 PM