Ping non-existent computer

[Dave Mc]

I have a small network with about 15 workstations and one server 2003. I
removed a workstation (Comp02) from the network and replaced it with a new
one whose name is Comp22. I also removed Comp02 from the list of computers
in the domain. My issue is when I ping by computer name, both computers
respond showing the same ip address. When I unplug the network cable from
Comp22, neither name responds to a ping. How can this be ?

 

[John Wunderlich]

I have a small network with about 15 workstations and one server
2003. I removed a workstation (Comp02) from the network and
replaced it with a new one whose name is Comp22. I also removed
Comp02 from the list of computers in the domain. My issue is when
I ping by computer name, both computers respond showing the same
ip address. When I unplug the network cable from Comp22, neither
name responds to a ping. How can this be ?

One scenario:

When you removed Comp02 and replaced it with Comp22, Comp22 obtained
the same IP address that Comp02 used to have. Since pings involve only
IP addresses (and not names) it is apparent that the entry in the
Master Browser, WINS, and/or Dynamic DNS for Comp02 may not have
flushed as yet (causing "Comp02" to successfully resolve to the same IP
address as the new Comp22).

You should really use "nbtstat" when pinging to a Windows Computer name
if you really want to ping to that device:

nbtstat -a Comp02
or
nbtstat -a Comp22

HTH,
John

 

[DrewEh]

What is handling your DNS Server functions?

If your Windows Server is running DNS server, it may have cached both
names with the same IP. On the server running DNS try this on a
command prompt "ipconfig /flushdns".

Is there any chance DHCP is assigning both machines one IP?