Solved Does anyone know of a good and free network analysis utility

Lenovo G460 laptop computer - 06779xu...
August 26, 2014 at 09:43:06
Specs: Win 7 Home Premium SP1 64 bit, 2.16/3G
I'm having problems with my network. I'm getting identical IP addresses on different p.c.'s. I'm looking for a good and free network utility to analyze the system. I've Googled many, but not found what I wanted yet. Any suggestions appreciated! Thanks,

vandal67


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✔ Best Answer
August 26, 2014 at 13:30:38
I would start by looking at the dhcp servers event viewer logs.

Usual problem you describe comes down to two things;

misconfigured dhcp server
sporadic loss of network connectivity to the dhcp server

I don't know of any software that could diagnose this for you.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's

message edited by wanderer



#1
August 26, 2014 at 10:05:37
What's to analyze? Either:

1. You have static addresses and have duplicated one.

2. You have mixed static and dynamic addresses and the zone on your DHCP server also covers the addresses that you have statically assigned.

3. You have more than one DHCP server with overlapping zones.

It should be trivial to determine which one is the culprit. If you still can't trace it then switch everything off, boot your DHCP server, then turn on your devices one at a time. Look for an error message.


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#2
August 26, 2014 at 10:08:47
Getting duplicate IP's on the same LAN is caused by either hard coding the IP addresses, or by having 2 or more DHCP servers running on the same network giving out IP's that overlap with what the other server(s) give out.


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#3
August 26, 2014 at 12:16:24
I only have 1 DHCP server, and there are no static addresses. Something is causing two or more of the computers to be assigned the same IP address.

vandal67


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Related Solutions

#4
August 26, 2014 at 12:55:15
Have you followed my suggestion?

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#5
August 26, 2014 at 13:30:38
✔ Best Answer
I would start by looking at the dhcp servers event viewer logs.

Usual problem you describe comes down to two things;

misconfigured dhcp server
sporadic loss of network connectivity to the dhcp server

I don't know of any software that could diagnose this for you.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's

message edited by wanderer


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#6
September 9, 2014 at 18:39:01
A storm scrambled the server, I guess. When I restarted it, it restored the network setting. Thanks for all the input.

vandal67


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