Cisco Support Tools 1.0 User Guide How to Use the Arp -a Utility 209
How to Use the Arp -a Utility The Address Resolution Protocol (Arp) allows a host to find the media access control
address of a host on the same physical network, given the IP address of the host. To
make ARP efficient, each computer caches IP-to-media access control address
mappings to eliminate repetitive Arp broadcast requests.
You can use the arp -a command to view the Arp table entries on a specified host.
The arp command is useful for viewing the Arp cache and resolving address
resolution problems.
To Access Arp -a from the Dashboard
To run Arp -a from the Support Tools Dashboard:
1. Use the System Select screen to select the system you want to work with.
2. From the Dashboard menu, select Cisco Common Tools > Arp -a.
3. Click the Run button.
Note: Because the Dashboard automatically sets the allowable commands for this
tool, the Dashboard screen for this utility does not contain a command line input
field.
Example
The following example shows sample output from the arp -a command.
See Also
For related information, see:
About Common Utilities