W2K DHCP problem

[TechLad]

Last night we switched from a Linux DHCP server to a Windows 2000 DHCP server.
The move seemed to go fine and over the next 30 minutes we had around 100 leases granted, however when people came into work those machines that had been turned off could not lease an IP address from the W2K DHCP server...all the machines that had been turned on at the time of swap over were fine...

Now I am really confused on this...does anyone have any ideas at all?

The error message we were getting on the clients was
"dhcp proxy requests received but no dhcp requests received"

?????


Remember: Backups save jobs!!!
;-)

 

[InfrArch]

"...all the machines that had been turned on at the time of swap over were fine..." - if on one of these machines you will issue an ipconfig /release and then ipconfig /renew : will they be able to get an ip address from the W2k DHCP?





Victor K
MCSE+I;MCSA;MCSE(w2k);CNE(5.1);CNE(6);CIWSP;CIWSA;Net+;CCNA

 

[TechLad]

Those machines that had been granted and address were able to release/renew ok.
All machines that had not gracefully released their previous Linux address would not.


Remember: Backups save jobs!!!
;-)

 

[Whoheard]

Did the DHCP Server address change?

Are the ones that cannot get an address on different segements of the network?


If so, check the DHCP forwarders/helpers for correct addressing info.

Have you tried this...

Release the ip and then shut the machine down/reboot.

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

 

[GlenJohnson]

What does the basics show? Ipconfig /all on all machines, good and bad and compare the results. How about pathping to the server and see what happens. Good luck.

Glen A. Johnson
"Fall seven times, stand up eight."
Proverb

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[TechLad]

We had 3 different scopes, IP addresses were leased from all of these and they worked (but only for those machines on at the time of switch over).
Results from pathping, ipconfig, etc were all as you would expect on machines that could get an IP and also for those that did not...i.e. the DHCP server could be seen from all machines, those machines with leases should them and those without didn't.

I don't think this problem is very straight forward and I reckon that some sort of LAN problem was experienced.

I have sinced dropped to a single large subnet and will try this out.

Remember: Backups save jobs!!!
;-)