Pinging an IP address

I recently ran into a situation where I received an IP conflict on a new
server. The server had been running fine for a few weeks when this happened.
I felt almost certain that the address was not being used anywhere on my
network. However when I disconnected it from the network I was still able to
ping the address. I then tried disconnecting another PC from the network and
tried pinging it's address and it replied just fine. I thought that maybe it
was because a host record was present in DNS. I deleted the records and was
still able to ping address's of computers I disconnected. I need to identify
an address that is in use. I tried the -a switch with ping, but it doesn't
display. I suspect if there is truly a device that's using the address that
it must be something other than a PC. However, I'm not real confident I'm
getting accurate results from the ping. Any ideas would be appreciated. Also
is there away I can display the MAC address of an IP ?


Jeffatsc

"Jeffatsc" <(E-Mail Removed)> wrote in message
news:BD1650F5-7A97-4B14-B142-(E-Mail Removed)...
>I recently ran into a situation where I received an IP conflict on a new
> server. The server had been running fine for a few weeks when this
> happened.
> I felt almost certain that the address was not being used anywhere on my
> network. However when I disconnected it from the network I was still able
> to
> ping the address. I then tried disconnecting another PC from the network
> and
> tried pinging it's address and it replied just fine. I thought that maybe
> it
> was because a host record was present in DNS. I deleted the records and
> was
> still able to ping address's of computers I disconnected. I need to
> identify
> an address that is in use. I tried the -a switch with ping, but it doesn't
> display. I suspect if there is truly a device that's using the address
> that
> it must be something other than a PC. However, I'm not real confident I'm
> getting accurate results from the ping. Any ideas would be appreciated.
> Also
> is there away I can display the MAC address of an IP ?

I had a similar situation happen to myself.
You can run IPCONFIG /ALL to view the hardware address(MAC). I used psexec
to run the command remotely from the system I was on.

For my case it turned out that the load balancing service for the two
network cards in the one server had quit, so the server was complainning
about itself since both cards were reporting the same address.

"Jeffatsc" <(E-Mail Removed)> wrote in message
news:BD1650F5-7A97-4B14-B142-(E-Mail Removed)...
>I recently ran into a situation where I received an IP conflict on a new
> server. The server had been running fine for a few weeks when this
> happened.
> I felt almost certain that the address was not being used anywhere on my
> network. However when I disconnected it from the network I was still able
> to
> ping the address. I then tried disconnecting another PC from the network
> and
> tried pinging it's address and it replied just fine. I thought that maybe
> it
> was because a host record was present in DNS. I deleted the records and
> was
> still able to ping address's of computers I disconnected. I need to
> identify
> an address that is in use. I tried the -a switch with ping, but it doesn't
> display. I suspect if there is truly a device that's using the address
> that
> it must be something other than a PC. However, I'm not real confident I'm
> getting accurate results from the ping. Any ideas would be appreciated.
> Also
> is there away I can display the MAC address of an IP ?

Two commands,..one right after the other.

ping <ip#>
arp -a <ip#>

The first command pings the IP# and enters the MAC address into the ARP
table.
The second command views the ARP table.

The ARP table has a relatively short TTL on the entries,..hence do the
commands back-to-back.

--
Phillip Windell
www.wandtv.com

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
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