DHCP Problem

[McLarnon]

I wonder if anyone can help me. All my clients on the network today are losing their IP addresses. As I look at the DHCP manager it shows each client with an expiry time at either some point later today or tomorrow.
My DHCP server is configured to expire addresses every 3 days.
However I didn't think that an address would expire whilst the user was logged on and if it did, it would renew almost immediatley.
I have not been able to restart my servers yet (PDC or BDC) and will do this at the end of the day.

My temporary work around is that I can change clients that lose their address to a static address so that they can carry on working. This is not ideal long term though.

I checked my BDC's event viewer today for the first time in months and it shows that it has been giving the following error since the 15th of June:

Error 213:
Replication of license information failed because the License Logging Service on server \\***** could not be contacted

I have since restarted the License Logging Service on the PDC but this has not made any difference.

Does anyone know as to why this would happen and how I might correct the problem?

I would be grateful for any response.

Regards

McLarnon

 

[GlenJohnson]

Need more details on the servers. In the meantime, create a batch file and put it on each workstation until we get this figured out.

Ipconfig /release
Ipconfig /renew

Name it IP.BAT, save it on the desktop and when users lose connectivity, have them click on the batch file.

How long has this been going on?

Glen A. Johnson
Johnson Computer Consulting
MCP W2K
glen@johnsoncomputers.us


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"Ask a question and you are a fool for one minute. Don't ask a question and you are a fool forever."
Chinese Proverb.

 

[McLarnon]

Thanks for the reply Glen.

The problem started when I arrived at the office yesterday morning. Many of my PC's were losing there IP addresses when they expired as the DHCP server was not renewing them. I had already tried running the commands you suggested but it just failed due to the problems with the DHCP. I did not want to restart my server during working hours incase the problem was more complex than I thought and that it would not come back up again.
My call centre would not have been able to process orders during the down time so I had to persevere throughout the day by giving all PC's who lost their address static addresses. Fortunatley the majority where not due to expire until after hours.
At close of play yesterday I was able to restart my servers and after that the DHCP server started to renew all addresses. I have since taken all my statics back up to dhcp clients and everything is running sweet .

Regards

McLarnon

 

[Whoheard]

Stop and Start the DHCP service and see if it recovers.

bob

I know what I know and that's all I know.

 

[GlenJohnson]

Sometimes thats all it takes. Re-boot the servers once in a while. In the meantime, take a really good look at your event logs, try to figure out what happened before it happens again, and it will. Good luck.

Glen A. Johnson
Johnson Computer Consulting
MCP W2K
glen@johnsoncomputers.us


Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884
"Ask a question and you are a fool for one minute. Don't ask a question and you are a fool forever."
Chinese Proverb.