Re: Find out if an IP address is in use on the LAN

It does not show up in arp -a

Thanks.


On Thu, Aug 14, 2014 at 1:41 PM, David Gibbs <david@xxxxxxxxxxxx> wrote:

On 8/14/2014 11:51 AM, Jeff Crosby wrote:

I'm 99% sure the IP address 192.168.0.5 is not in use on our LAN, but
I want to be 100% sure.

I'm not sure this is the best way ... but give it a try.

First ping the IP. It may or may not respond.

Then run 'arp -a' to see if the IP is in the arp table. This should also
tell you the mac address of the device so you can at least determine it's
manufacturer and/or model.

david


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