How to find MAC addresses on network?

[Thomas Kaiser]

Chris G wrote:
> On Thu, Jan 22, 2009 at 11:04:44PM +0100, Thomas Kaiser wrote:
>> Chris G wrote:
>>> Is there a (reasonably) straightforward way of finding the MAC
>>> addresses of systems (well, strictly, interfaces) on a network?
>>>
>>> arping works for some but not all of my hardware, presumably some
>>> things (like my HP printer) don't respond to arping.  What can I use
>>> to find the MAC address of the printer?
>>>
>> Connect to your device somehow (http, print a document) and after run 
>> "arp" in a terminal. The MAC addresses of the devices you connected 
>> stays in the ARP cache of your computer for some time. "arp" just shows 
>> the cache.
>>
> Thanks, works for just about everything except the HP printer, that
> returns:- 
> 
>     hp7310                           (incomplete)                     eth0
> 
> 

So, that means there is now MAC address in the cache. And that means you 
could not connect to the printer!

Can you print with this printer?

Thomas