IP Addressing Commands 161
arp
The
arp
Global Configuration mode command adds a permanent entry in the Address Resolution
Protocol (ARP) cache. To remove an entry from the ARP cache, use the
no
form of this command.
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
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