Solved

Same Name with Ping -a

Posted on 2002-07-18
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Last Modified: 2010-04-11
When I do a ping -a x.x.x.101 it returns machine name admin11 and when I do a ping -a x.x.x.102 it returns machine name admin11. I have physically verified that each machine has a different IP (we are using static IP addresses). If I ping admin11 it returns x.x.x.101 and then ping admin12 it returns x.x.x.102.
We have Active Directory installed as well as Solaris and Novell 5 on the network. There is no WINS service running on any server and all workstations do not have WINS addresses. I check DNS entries as well and there is nothing to offer any insight. There are no events in the log files for duplicate names on any of the servers and the workstations do not have issues connecting. DNS is handled via Win2K as well as network authentication.
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Question by:TeckWitt
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6 Comments
 
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Expert Comment

by:edmonds_robert
ID: 7162104
Clear the cache on the DNS server anyway.  (Right click on the server in MMC, and select "Clear Cache").  This won't destroy your active registrations, but those that have been resolved and kept in memory.
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by:gandalf94305
ID: 7162396
Your DNS is not configured properly. DNS mappings consist of two mappings actually: one from the name to the IP address and one the other way around.

You probably have the following:

...101 PTR admin11 (address to name)
...102 PTR admin12 (address to name)

admin11 A ...101 (name to address)
admin12 A ...102 (name to address)

This explains the asymmetric behaviour.

Cheers,
--gandalf.
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TeckWitt earned 0 total points
ID: 7163785
I found that the reverse DNS was not set to dynamically update and it was not purging old records so many machines had multiple entries in the reverse look up records. Everything is happy.  Thanks for all your help.
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by:CleanupPing
ID: 9155517
TeckWitt:
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
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Post your closing recommendations!  No comment means you don't care.
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by:John Gates, CISSP
ID: 9356865
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

PAQ/Refund

Please leave any comments here within the next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!

Dimante
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