dhcp services affecting network connectivity

January 31, 2012 at 15:00:43
Specs: Windows 7
win 2003 dhcp server. when I leave dhcp services OFF i can ping the server fine. once i turn ON dhcp services the connecting drops in and out.. what is going on here?
My users are unable to get a steady connection to the dhcp server.
Suggestions i can try or test?
Thank you.

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#1
February 1, 2012 at 04:52:52

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#2
February 1, 2012 at 07:24:08
Do you have more than one DHCP server running?

If you have more than one, shut one down and see if that doesn't fix the issue.

If you only have one DHCP server running, then I'll need some info.

Are you using a SOHO Router?

What device is the DHCP server running on (ie: router, server)?

What are the DHCP server settings (ie: Scope, Subnet Mask, DNS, Default Gateway)?

Finally, on a client open a command prompt window (ie: Start >> Run >> type cmd and hit Enter) and perform the following command:

ipconfig /all

Once you've finished, copy/paste the output into a response on here so we can have a look.

For info on how to copy/paste from a command prompt window click on my name above and read my "how-to" guide titled, "Post the output of ipconfig (version 2)"

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#3
February 1, 2012 at 14:01:04
We really need a ipconfig /all when the 2003 dhcp server is not enaged and another when it is engaged.

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


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Related Solutions

#4
February 1, 2012 at 14:14:44
One 2008 AD domain.
2 networks - 10.1.x.x network and 10.2.x.x network
2 dhcp servers - one for 10.1 and one for 10.2 networks
we use Apple extreme airport WAPs on the 10.1. and 10.2 networks
dhcp server for 10.1 works fine. no issues
dhcp server for 10,2 is the problematic one. everytime i turn on the dhcp services , netowrk connectiity for the dhcp server keeps dropping off.
if I turn off dhcp services - connection is stable.
ran access point finder util and found no rougue APs
10.2 dhcp server scope: 10.2.56.1 - 10.2.59.254
gateway is 10.2.1.1
DNS is 10.2.120.100
IP address and other parameters on the client side are correct when I do an ipconfig /all.
really a puzzler.
appreciate everyones input.
thanks

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#5
February 1, 2012 at 14:30:34
10.2 dhcp server scope: 10.2.56.1 - 10.2.59.254
gateway is 10.2.1.1
DNS is 10.2.120.100

What is your subnet mask?

Also, what device(s) are the DHCP servers running on?

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#6
February 1, 2012 at 14:43:07
dhcp server - Dell 1650 server

mask: 255.255.0.0

this is the 4th box we built
1st was a 2003 box created from an image on VM
2nd was a 2003 box creayted from scratch, fresh install from CD and new scope also on VM
3rd is 2003 box on a physical Dell box
4th was a 2008 box on VM.

We currently have the 3rd box active. a 2003 server on a physical dell box

thanks



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#7
February 1, 2012 at 14:59:57
Where is the router between the subnets?

10.1.x.x with 255.255.0.0 gives a range of 10.1.0.0 - 10.1.255.255

You can't get from the 10.2.x.x network to the 10.1.x.x network without a router.

Again I am requesting that you post a ipconfig /all from a workstation when there is no problem and again when there is one.

It would also be good to see a ipconfig /all from the server on 10.2.xx network

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


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#8
February 7, 2012 at 15:06:11
sorry fo the late reply. we've found the culptit but I don't know how it's doing it. It was a remote power switch that is on the network with an IP address. It was causing the ping drop-offs to the DHCP server. soon as we put it offline, things were back to normal. must be the network adapter on that power switch just spitting out garbage. oh well. thanks for all the assist.

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