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arp -a

Posted on 2002-07-16
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Last Modified: 2010-04-13
Why would an arp -a command return nothing on a properly functioning W2K system? The system is properly configured with IP it is able to browse the net, etc. I wonder why it is not returning anything for arp. It has a static IP address.
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Question by:mazsola
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by:jmiller47
ID: 7158672
try pinging a few machines and then rerunning the arp -a command.

See if that adds some entries.
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by:mazsola
ID: 7160269
Are you sure? On my server, I had my arp command work just fine without pinging any one. Why would that be?
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jmiller47 earned 100 total points
ID: 7161258
Well if you already have connections or had connections recently to certain machines through some other machines then the arp cache would have entries. This will ensure that new arp entries are added into the cache by pinging.
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by:jmiller47
ID: 7161279
Is there more you needed for this. I don't feel that you finally did arrive at the answer you needed. Or did you?
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by:mazsola
ID: 7162499
I will try pinging, but I am not sure that is the solution.

Thanks
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by:jmiller47
ID: 7162696
No, pinging is not the solution and that was what I was trying to say. Pinging is a troubleshooting tool that will hopefully manually populate the  arp cache. If it does not, then we can take it from there...
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Author Comment

by:mazsola
ID: 7162784
OK, I will try it and let you know what I have found out. I will be testing it on some systems later today.
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by:jmiller47
ID: 7162876
OK. Please make sure never to accept an answer until you are satisfied. Since this question is PAQed, no other experts will see it or contribute to it although there are many that could possibly help you a great deal...
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