When do IP's show up in the SHOW ARP command?
Posted on 2008-10-22
I do not fully understand when an IP address will show up in the output of the SHOW ARP command. For example, I have a VLAN on my CISCO 4006 Switch and I know there 4 dell PC's are connected to it. I thought that the IP's for those PC's would show up in the output of a SHOW ARP command so I could then get the MAC addresses of those PC's, run a SHOW MAC ADDRESS command, and find the port they are connected to. However, even though these PC's have been connected for quite some time, their IP addresses do not appear when I run a SHOW ARP command.